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Initiatives for the problem of hazardous substances

Introducing domestic and overseas safety standards and our quality control system and activities for harmful substances that may be contained in products. *Click here for the analysis result data of our products.

At Daio Seisakusho, we are actively promoting the use of lead-free products, but the problem of lead being mixed into parts imported as lead-free products from our China factory in 2006 (it passed as lead-free in the preliminary inspection at the start of import). ), and in order to strengthen the acceptance inspection and pre-shipment inspection at every import and receipt, purchase and install the fluorescent X-ray analyzer in-house and perform sampling inspection to ensure quality assurance as needed. I am.
In addition, we have a system in place to report the content inspection results using an X-ray fluorescence analyzer for the six RoHS regulated substances including lead on the same day in response to customer requests.

Our approach to harmful substances

In Japan, the Food Sanitation Law has been partially revised, and products that have been manufactured or imported after October 20, 10 have not been regulated at all until now. , Lead regulations have started for small parts that infants may swallow).
We will continue to actively promote lead-free products as a voluntary regulation, not limited to this regulation (infants).

Regarding the problem of lead contained in our metal accessories

In a series of reports on "the problem of high concentrations of lead contained in metal accessories", there is an impression that imported products such as those made in China and inexpensive products for children contain a large amount of lead. I will give it, but it depends on the manufacturing method actually used.
However, regarding the products manufactured or imported after October 20, 10 due to the revision of the Food Sanitation Law, there is a risk that infants may come into contact with them and their health may be impaired. However, unfortunately all manufacturers, sellers, and consumers are not aware of lead, and even in Japan, materials that contain a lot of lead and metal products using the manufacturing method are suitable for children. Currently, not only metal accessories but also widely manufactured and distributed.
We will take this opportunity to revise our awareness of lead, work to understand the lead content in our products, call out the lead content status and handling precautions for the product, and at the same time check if there is any regulation. Regardless of lead-free, we will continue to develop manufacturing methods and products.

Alternative manufacturing method for the two major manufacturing methods containing lead.

Manufacturing method Lead content Features Reference example Alternative proposal Substitute product analysis results
Rubber cast Low meta:
Around 90%
High meta:
Around 5%
Since it is molded using a rubber mold, it is inexpensive and can be used in small lots (from around 100).
The material is a low-cost lead-tin alloy with a low melting point.
Rubber cast reference example

You can still use rubber molds by using lead-free materials. However, the material cost is about twice as high as before.
It has already been commercialized.

Rubber cast alternative
Rubber cast alternative product analysis results
Brass cutting
Hikimono
2-3% Among the products made of brass (brass: alloy of copper and zinc), the accessory parts that are formed by carving a rod are made of brass and contain several% of lead in order to improve machinability. .. Brass cutting process (Hikimono) Reference example

Bismuth (0.5-4.0%) may be added instead of lead to improve the machinability of lead-free bismuth-based materials.

Brass cutting (Hikimono) alternative
Brass cutting (Hikimono) alternative product analysis results
Brass cutting process (Hikimono) Reference example

Regarding the strap part of the mobile phone strap (commonly known as Matsuba), it is being manufactured and sold by changing the shape to a lead-free material.

Brass cutting (Hikimono) alternative
Brass cutting (Hikimono) alternative product analysis results

*Lead content rate: CPSC regulation value is 0.06%

Lead contained in rhinestones (Swarovski crystal glass, etc.)

Although rhinestones (Deco Den) are popular in the world, lead is contained in so-called crystal glass that is usually in circulation. However, if RoHS regulation is taken into consideration, the lead contained in general crystal glass including Swarovski products is applicable to the one in Annex 69 (Category 493, 1, 1 and 2) of Directive 3/4/ECC (Note). It is clearly stated that it will be excluded.

Rhinestone type Lead content RoHS compliant
Swarovski
There
Swarovski crystal glass has colors that do not match the colors excluded from the scope of RoHS.
General crystal glass
There
?
Since general crystal glass varies depending on the manufacturer, please contact the manufacturer for colors that are not covered by the RoHS coverage.
Zirconia
None
As a result of surveying the content of lead, etc., we found that it complies with the RoHS regulation.
ア ク リ ル
None
As a result of surveying the content of lead, etc., we found that it complies with the RoHS regulation.

List of press releases on the problem of high lead content in metal accessories

Date Jurisdiction Message Links
Heisei
18
3
6 Day
Tokyo Metropolitan Department of Life and Culture
Consumer Affairs Department Life Safety Division
The Tokyo Metropolitan Government has conducted a "Survey on the safety of heavy metals contained in metal accessories, etc." based on Article 9 of the Tokyo Metropolitan Consumer Affairs Ordinance. As a result, commercially available metal accessories※ 1It has become clear that some of these contain harmful lead.
However, there are currently no regulations regarding lead in metal accessories in Japan.
Therefore, we would like to inform you that we have made an urgent proposal to the country today to prevent harm.
In the future,Calling attention to consumersto hold. (These are excerpts from the Tokyo press release materials)
Investigation on safety of heavy metals contained in metal accessories
Heisei
18
3
8 Day

Ministry of Health, Labor and Welfare
Examination Management Division Chemical Substance Safety Office
As of March 3, this year, the Tokyo Metropolitan Bureau of Life and Culture announced a survey on the safety of heavy metals contained in metal accessories, and high concentrations of lead were found in metal accessories distributed in Japan. In light of the fact that there is a product contained in the above, we have issued a notification to the relevant organizations regarding the thorough understanding of the lead content status, etc. as attached. (The above is an excerpt from the Ministry of Health, Labor and Welfare notification materials) Issuance of notice regarding lead contained in metal accessories
Heisei
18
4
28 Day
Ministry of Economy, Trade and Industry and Ministry of Health, Labor and Welfare The Ministry of Economy, Trade and Industry and the Ministry of Health, Labor and Welfare have just conducted a “Survey on the actual manufacturing and sales of lead-containing metal accessories,” but by April 4, 20 groups and 23 companies responded. was. As a result, we will announce the correspondence. (The above is an excerpt from the press release document of the Ministry of Economy, Trade and Industry) About the fact-finding survey on metal accessories containing lead
Heisei
18
6
13 Day
Ministry of Health, Labor and Welfare
Examination Management Division Chemical Substance Safety Office
The Ministry of Health, Labor and Welfare will hold the first study meeting on June 18, 6 (Tuesday) by experts on "Safety measures for metal accessories containing lead". About holding of the 1st study meeting on safety measures for lead-containing metal accessories
Heisei
19
1
25 Day
Ministry of Health, Labor and Welfare
Examination Management Division Chemical Substance Safety Office
On Thursday, January 19, 1, the 25th meeting of experts on "Safety measures for lead-containing metal accessories" was held by experts. The 4th Study Meeting on Safety Measures for Lead-containing Metal Accessories
Heisei
19
2
16 Day
Ministry of Health, Labor and Welfare
Examination Management Division Chemical Substance Safety Office
The report was published on February 19, 2 (Friday), entitled "Report of Study Group on Safety Measures for Lead-containing Metal Accessories". Report of Study Group on Safety Measures for Lead-containing Metal Accessories
Heisei
19
10
8 Day
Ministry of Health, Labor and Welfare
Pharmaceutical Affairs and Food Sanitation Council
Food Hygiene Subcommittee Equipment/Containers and Packaging Subcommittee
The Nikkei MJ dated October 19, 10 (Monday), entitled "Strengthening safety standards for infant toys, "elution amount standard in overall painting"", the Ministry of Health, Labor and Welfare has established a food hygiene that defines substances that cannot be used in infant toys. It has been reported that the legal standards will be strengthened and a new safety standard will be set for the amount of elution of heavy metals for "painting" and "metal toy accessories". After confirming with the Ministry of Health, Labor and Welfare, Ministry of Health, Labor and Welfare, Pharmaceutical and Food Safety Bureau, Food Safety Department, Standards Examination Section, Equipment and Containers and Packaging Section, it is still in the stage of discussion at the subcommittee for revision, and the report will be compiled within this year, and to some extent next year. The grace period will be set and the legislation will be set. About the holding of the Pharmaceutical Affairs and Food Hygiene Council Food Hygiene Subcommittee Equipment and Containers and Packaging Subcommittee
Heisei
19
12
6 Day
Ministry of Health, Labor and Welfare
Pharmaceutical Affairs and Food Sanitation Council
Food Hygiene Subcommittee Equipment/Containers and Packaging Subcommittee
The Asahi Shimbun dated December 19, 12 (Thursday), titled "Reinforcement of Imported Toy Monitoring," the Ministry of Health, Labor and Welfare has decided to strengthen the monitoring of imported toys for infants and stipulated the provisions of the Food Sanitation Law. It will require importers to review and verify by inspection whether or not paints contain harmful substances that exceed the standards for imported toy products that infants may contain in their mouths. Importers are obliged to take measures such as confirming safety and collecting when problems occur. In particular, paints will be required to prove by inspection whether they contain a certain amount of harmful substances such as lead. Related Documents

Lead regulation (Regulations regarding lead in metal accessories have started in Japan)

About the US Consumer Product Safety Commission (CPSC)

The CPSC (The US Consumer Product Safety Commission) is a central governmental organization established in 1972 with the purpose of protecting the public from the unreasonable risk of injury and death related to consumer products in accordance with the Consumer Product Safety Law.
Regarding lead, in 2004, we confirmed a case in which a child who swallowed a treasure containing lead had serious health effects.After that, we conducted a survey analysis, and the CPSC released the results in February 2005. , Set out an interim policy to reduce the potential health risks from lead to children. In that tentative policyLead content is 0.06% (600ppm),Lead elution amount is 175 μgThe limit content value is shown.
Note) μ = micro is 10-6That. 1 μg is 0.000001 g

Postscript: To prohibit the use of lead in toys
On August 2008, 8, President Bush signed a bill prohibiting the use of lead in children's toys under the age of 14.
The new law that was enacted will include the installation of a new institution to inspect the quality of products by 2014.

What is the RoHS Directive?

It prohibits the import and sale of electronic devices containing 25 substances that are harmful to the human body in all 6 EU countries, and will take effect on July 2006, 7.
RoHS is an abbreviation for “Restriction of the use of certain hazadous substances in electrical and electronic equipment”, and the target electronic devices are TVs, radios, white goods and personal computers.
Although the metal accessory products we handle seem to be unrelated at first glance, they are actually used as mounting brackets and parts for electronic device products, so they comply with regulations from EU export-related companies. The needs are increasing.

What are 6 hazardous substances in the RoHS directive?

  • Pb (Lead): The limit content value is 0.1% (1000ppm) or less of the content rate per weight of each part.
  • Hg (Mercury): The limit content value is 0.1% (1000ppm) or less of the content rate per weight of each part.
  • Cd (Cadmium): The limit content value is 0.01% (100 ppm) or less of the content rate per weight of each part.
  • Cr (hexavalent chromium): The limit content value is 0.1% (1000ppm) or less of the content rate per weight of each part.
  • PBB (polybrominated biphenyl): The limit content value is 0.1% (1000 ppm) or less of the content per weight of each part.
  • PBDE (polybrominated diphenyl ether): The limit content value is 0.1% (1000 ppm) or less of the content rate per weight of each part.

*Since July 2019, 7, the use of four substances: bis(DEHP) phthalate, butylbenzyl phthalate (BBP), dibutyl phthalate (DBP), and diisobutyl phthalate (DIBP) is restricted.

What is EN71 (European Toy Safety Standard)

EN71 (European toy safety standard) lists specific inspection items regarding toy safety from various angles such as the target age and purpose of use.
The same content is stipulated in ISO8124.
You must comply with this when manufacturing and selling applicable toys in EU countries.

EN71 is from Part 1 to 11 and EN71 Part 3 is a provision for the transfer of specific elements. Based on the assumed prescribed test method, the limit value of elution amount is set for each of clay finger paint and others.

In its EN71 and ISO812490ppm as the standard value for dissolution of leadIs specified.
This standard value has been set assuming the risk of accidental ingestion by infants, and the Japan Toy Association will ensure the safety of "metal accessories, etc." regarding lead by meeting this standard. It seems to be done.
In order to meet the standards of the Japan Toy Association, we also conduct inspections to meet the standard values ​​for lead among the eight substances specified in EN71-Part3.

Handling lead in the toy safety standard (ST standard)

As of May 18, 5, the Japan Toy Association aims to secure safety in case of accidental ingestion by a child as a provisional measure for "metal accessories, etc. applicable to toys". We decided to take the following measures.

1. Interim measures
「玩具に該当する金属製アクセサリー類など(携帯ストラップ・キーホルダーを含む)」に対する玩具安全基準(ST基準)として、「ST基準1.5(塗装)」で適用されている「鉛の溶出基準値(90ppm)」とISO8124-3:1997「8.5ガラス/セラミック/金属材料」の試験方法(EN71-3:1995「8.5」も同旨)を暫定的に要件として追加する。
If this standard is not met, the ST standard conformance inspection conducted by the ST inspection organization cannot be passed, and the "ST mark" cannot be attached to the "metal accessories, etc.".
2. Target products
"Metal accessories corresponding to toys"
3.Target age
The target age of the product is "14 years old and under"
4. Implementation time
July 18, 7
5.ST inspection agency inspection fee
One sample costs 7,000 yen (excluding consumption tax)

Our company independently conducted a lead safety test on existing lead-containing products and lead-free products using the test methods of EN71 Part3 and ISO8124-3.

As a result, as shown below, it was found that even products containing a very large amount of lead meet the above standards (90 mg/kg) for those whose surface is plated.
However, if the product is damaged or the plating is peeled off, the lead of the material may elute beyond the standard value, so be careful.

Inspection target Our product number plating Lead content Test results Elution standard
Cellphone strap cap (with lead) KT-C / 4mm / Ni Nickel plating 2-3% 11 mg/kg or less
Mobile phone strap cap (lead-free) RS-C / 4mm / Ni Nickel plating 0.02% 5 mg/kg or less
Rubber cast (with lead) Low meta Genuine gold plating About 90% 5 mg/kg or less
Rubber cast (lead-free) Bismuth system Genuine gold plating 0.035% 5 mg/kg or less

Regulations on toys for toddlers based on the Food Sanitation Law (latest information)

Purpose of revision
1 In order to deal with diversified toys in recent years, we have expanded the range of toys prescribed as "There is a risk that the health of infants may be damaged by contact with infants" prescribed in Article 62, Paragraph 1 of the Food Sanitation Act.
2 Incorporate internationally accepted toy standards (ISO standards, etc.) and ensure international consistency of standards from the viewpoint of hygiene of toys.
3 Strengthen the standards related to lead, etc. to ensure the safety of toys from a hygienic point of view.
Key points of revisions related to rules
1 Elimination of material restrictions for designated toys
2 Addition of target cancer tools (newly added accessory cancer tools)
With accessory cancer toolInfantsCancer tools used as accessories
Specifically, it refers to cancer devices in the form of jewelry such as rings, necklaces, brooches, and pendants.
However, this does not include items that are not intended to be played as toys such as key chains and cell phone straps.
Key points of revision regarding notification
1 Change from raw material to final product standard
  • From "paint" to "coating film"
  • From "material" to "manufactured part"
2 Strengthening of standards for lead, etc.
  • Change to elution standard based on ISO
  • Enlargement of target coating film
  • Newly established lead standard for metal accessories cancer tools
    The lead elution standard for metal accessory cancer tools (limited to those that may be swallowed by infants) has been newly set.
    In accordance with ISO standards, etc., a container for determining the size that an infant may swallow by accidental swallowing shall be defined and the size shall fit in the container when placed in an uncompressed state.
  • Small Parts Cylinder (Small Parts Cylinder) Container
  • Small Parts Cylinder Manual
  • Small parts cylinder (small parts cylinder) container for determining the size that infants may swallow by accidental ingestion

    We have started to manufacture and sell small-sized cylinder (small parts cylinder) containers for distinguishing accidental ingestion because there are many requests for purchasing from us.
Material Product standard Sales price Manufacturer Features
ア ク リ ル Since the pre-made acrylic pipe is used to keep the unit price down, the inner diameter is 32mm. Ltd.
Daio Works
The standard inner diameter is 31.8 + 0.1 mm, but this product is 0.2 mm larger than the standard. This is because it was manufactured using a pre-made acrylic tube to keep the unit price down. Since a large part works to strengthen the regulation, it seems that there is no problem in operation.
"Spherical capsule (diameter 40 mm) accidentally ingests children." Bandai issued a compensation order and decided to revise the standard
1 Fact
A spherical capsule (40 mm in diameter) with a toy called "Gachapon" was accidentally swallowed by a boy in Kagoshima City (2 years and 10 months old at the time) and removed about 30 minutes later. I suffered a severe disorder such as being unable to move.
2 Billing Summary
Based on the Product Liability Law (PL Law), the parents asked the manufacturer, BANDAI NAMCO Games (Tokyo), to indemnify them for approximately 1 million yen.
3 Judgment content
On May 2009, 5, the Kagoshima District Court ordered the manufacturer to pay approximately 20 million yen. According to the judgment, the damage amount was calculated to be 2,626 million yen, but it was found that the parents also violated the duty of care, and the manufacturer's liability was found to be 7,954%.
4 Issue
The manufacturer claimed that the capsules met the toy safety standard (ST standard) of 31.8 mm or more in diameter, but the presiding judge said, "Infants under the age of 3 have a size of more than 40 mm when opened. It is not uncommon," he said, "in order to make it easier to take out in case of accidental ingestion, it is necessary to make it square or to provide multiple holes to secure the airway."
5 Overseas safety standards
The standard for small parts (small parts) of toys is 31.8 mm or more in diameter, which is specified by the toy safety standard (ST standard) in Japan, while EN71-1 standard in Europe and CPSC federal regulations in the United States. For spherical products, a safety standard of 44.5 mm or more in diameter is set.
6 Our efforts
We have a small parts cylinder (small parts cylinder) container for determining accidental ingestion based on Japanese safety standards, and a small parts cylinder (small parts cylinder) container with a diameter of 32 mm and a diameter of 40 mm based on Japanese safety standards. We are now able to provide small part cylinder (small part cylinder) containers that comply with the standard of. We are also preparing to provide a small parts cylinder (small parts cylinder) with a diameter of 45 mm based on overseas safety standards. Please feel free to contact us for details.
Application date
1 Rule relation
About revision of rule Article 78, apply from May 20, 5.
However, the provisions of Article 20, paragraph 9 of the Act relating to the said toy do not apply to products manufactured or imported by September 30, 18.
2 Relationship
Regarding the revision of the notification, apply from March 20, 3.
However, for those manufactured or imported by September 20, 9, the previous example may still apply.
Q&A excerpt
Q3
The metal accessory cancer tool itself (whole body) does not fit in the accidental ingestion determination container, but if the part is made of metal and fits in the accidental ingestion determination container, the metal accessory cancer tool (whole) may be swallowed. Can I judge that it does not correspond to a thing?
A3
Metal accessories The parts of the cancer tool are designed and manufactured so that they can be removed structurally, and the parts that are made of metal are those that may be swallowed.
Therefore, removable metal parts must meet the standards for metal accessory guns.
Q23
Can fluorescent X-ray analysis be used as a screening for elution test in the test of paint film or metal accessory cancer tool?
A23
Regarding the screening of lead, cadmium and arsenic using the fluorescent X-ray analysis method, there is no problem if the judgment is made with a sufficiently low value that does not overlook those exceeding the standard value of the Food Sanitation Law. If lead, etc., is detected in excess of the discrimination value, perform a dissolution test. In addition, if lead is detected in the metal accessory cancer tool plated, perform a dissolution test regardless of the amount. In any case, it should be noted that the final judgment is made by using the test method indicated in the notification when the result is in doubt.
Contradiction
Addition of target cancer tools (newly added accessory cancer tools)
An accessory cancer tool is a cancer tool that infants use as an accessory.
Specifically, it refers to cancer devices in the form of jewelry such as rings, necklaces, brooches, and pendants.
However, this does not include items that are not intended to be played as toys such as key chains and cell phone straps.

It is said that key chains and cell phone straps not intended to be played as toys are not covered.
It is said that the targets are those that may be swallowed.
Are there any dangers of swallowing key chains or cell phone straps? ? ?

Metal accessories If the parts of the cancer tool are designed and manufactured so that they can be structurally removed, and if the parts are made of metal,It corresponds to those that may be swallowed.
Therefore, removable metal parts must meet the standards for metal accessory guns.

As a matter of course, our company may inadvertently swallow children's key chains and cell phone straps, so we will continue to actively promote lead-free products as a voluntary regulation without limiting to this regulation (infants). I will promote it.

Comparison of national CPSC and RoHS directives with EN71 and Food Sanitation Law

The table below shows a comparison of lead standard values ​​required by the US CPSC, RoHS and EN71.
In conducting the analysis and survey, we conducted an analysis based on the RoHS Directive, which regulates a wider range of heavy metals, and for lead regulation, 0.06%, which is the US CPSC standard with a stricter regulation value. We will continue to analyze and improve our products so that they fall below the target.

Type of regulation Country law Target Lead
Content
Of content
Test method
Lead
Elution amount
Of elution amount
Test method
CPSC 米 国 Consumer products
Safety law
To protect the public from the irrational risk of injury and death related to consumer products
0.06%
※ 1
175 μg
※ 2
EN71
(ISO8124)
Europe Toy safety
specification
Standardize specific inspections regarding toy safety from various angles such as target age and purpose of use
-----
-----
90ppm
※ 3
RoHS EU European law The purpose is to minimize the risk to the environment and human health
0.1%
※ 4
-----
-----
Welfare work Japan Food Sanitation Act Intended for those who may be injured by contact with infants
90μg
※ 5

*1. CPSC content test (test to determine the concentration of lead contained in the sample. Unit: wt%)
Collect 50 milligrams to 70 milligrams of sample into a 100 milliliter beaker, add 8 milliliters of nitric acid, and heat on a hot plate until it becomes approximately 3 milliliters.
After cooling, add 2 ml of hydrochloric acid, stir, and make up to 50 ml with ultrapure water to make a sample for ICP emission spectroscopy.

*2. CPSC dissolution test (test to determine how much lead dissolves from the sample in a solution assuming gastric acid. Unit: microgram)
The mass of the sample was measured, the sample was suspended in a poly container with a thread, and 0.07 mol/liter of hydrochloric acid was added in an amount 50 times the mass of the sample. The container was placed in a constant temperature shaking water tank set at 37 degrees, the number of times of shaking was 80 times/minute, and the shaking was performed for a specified time. After shaking for 1 hour, the sample was taken out, transferred to a separately prepared plastic container, 0.07 mol/liter of hydrochloric acid was added, and subsequently shaken for 2 hours. After shaking, the sample was taken out, transferred to a separately prepared poly container, added with 0.07 mol/l hydrochloric acid, and shaken for 3 hours. The three eluates obtained by the above shaking operation were individually used as samples for ICP emission spectroscopic analysis.

*3. Dissolution amount test of EN71 (EN71-3:1995 “8.5” glass/ceramic/metal material test method)
Place the toy or component in a 50 ml glass container and add a sufficient volume of 37 mol/l hydrochloric acid aqueous solution at 2 ± 0.07°C to cover the toy or component.
Cover the container with a lid to protect the contents from light and keep it at 37±2℃ for 2 hours.
After decantation without delay, filter through a membrane filter and centrifuge if necessary to separate solids from the solution. The solution obtained is analyzed.

*4. RoHS lead content test (test to determine the concentration of lead contained in the sample. Unit: wt%)
It seems that the RoHS Directive does not specify test methods, so each manufacturer has specified a test method.
In our company, testing is conducted by an inspection contracting organization in a form complying with EPA352 law.

*5. Test method for products that may be swallowed by infants, out of the metal accessory cancer tools in the Food Sanitation Act.

> Preparation of test solution
Place the sample in a beaker with a diameter of about 40 mm, add 37 mol/l hydrochloric acid heated to 0.07°C until the sample is immersed, leave it at 37°C for 2 hours in the dark, and then filter.
Distilled water is added to 0.07 mol/l hydrochloric acid HCl HCl [K 8180, special grade] 6.3 ml to make 1,000 ml.

> Lead
Take 0.1 ml of lead standard stock solution and add 0.07 mol/l hydrochloric acid to make 100 ml. 1 ml of this solution contains 1 μg of lead. Dilute this solution with 0.07 mol/l hydrochloric acid and measure by the same method as for the test solution to prepare a lead calibration curve. However, use the lead standard undiluted solution specified in Section 3, Standard solution, Standard undiluted solution such as Part 4, Reagents/Test solution, etc.

Comparison of REACH regulation and RoHS directive

REACH regulation is a chemical substance regulation in the EU which means Registration, Evaluation, Authorization and Restriction of Chemicals. Compared to the same EU regulation, which is RoHS (Rose, restriction on the use of 6 hazardous substances), the regulation targets a wide range of industries such as chemicals, electrical appliances, and automobiles, and there are about 3 types of regulated chemical substances. I am.

Type of regulation Country Regulation content Target of regulation Regulation start
REACH EU Chemical concentration.
Companies are required to carry out safety assessments of approximately 3 types of chemical substances.
Includes daily necessities such as chemicals, electric appliances, automobiles, mobile phones, and toys.
2007/6
RoHS EU Restrictions on the content of six harmful substances.
In the RoHS directive, lead, mercury, and cadmium are elemental regulations, but the REACH regulation is for chemical substances.
Mainly electrical and electronic equipment manufacturers
2006/7

Regulations on toys for infants based on the Food Sanitation Law (old information)

Food Sanitation ActHas designated the following toys as "toys that may damage health due to contact with infants", but due to the problem that lead was contained in the paint of Chinese products, etc., Law revisions are being considered in the direction of including "painting" in general and "metal toy accessories".
Until now, the “paint” had been limited to vinyl chloride resin paints, but the revised bill uses paints of any kind.
Regarding “Metal toy accessories,” we are aiming to regulate the amount of lead elution in small parts that children may swallow.
Then, we expanded the scope of treatment as these "toys that may damage health due to contact with infants", and in the past, the type and material of the toys were specified respectively, but in the revised bill, regarding the material Has been abolished, and regardless of the material used, "toy accessories" etc. have been added to the types of toys, and it is the direction targeted for virtually all toys.

About Electrical Appliance and Material Safety Law (PSE mark)

PSE mark

Electrical Appliance and Material Safety Law (PSE mark)Is a mark that is attached to the one that meets the safety standard, which is provided to prevent the danger and the trouble caused by the electric products. Electric appliances used in ordinary households, shops, offices, etc., and products (electrical appliances) specified by the Cabinet Order are PSE mark, business name, rated voltage, rated power consumption There is a rule that you cannot sell without the display. In our products, "mobile batterySince February 2019, 2, we are proceeding with preparations for a "mobile battery" with the PSE certification mark based on the prohibition of sales although there is no PSE certification mark. For products that do not have a certification mark, sales will end when stock is exhausted.

Information on hazardous substances in products handled by our company (mainly for vendors)

The inspection result of harmful substances of our products is "MSDS/hazardous substance informationMoved to

About lead detection method

Inductively-coupled Plasma Mass Spectrometer (ICP/MS)

Inductively coupled plasma mass spectrometry (ICP/MS) ionizes inductively coupled plasma (ICP: discharge plasma generated by applying high-frequency energy to argon gas at atmospheric pressure) to investigate the composition of trace elements, and has high sensitivity. It is a device that can perform various mass spectrometric measurements, and can measure multiple elements simultaneously, and has a wide measurement range.
At our company, when we proceeded with the investigation and analysis regarding this "problem that high concentrations of lead are contained in metal accessories", we contacted the Life Safety Division, Consumer Affairs Department, Living and Culture Bureau of Tokyo, and actually While contacting several external inspection organizations including the one that performed the inspection, finally let us use Nippon Environment Co., Ltd., which was excellent in terms of delivery date, unit price and service, as our main inspection organization. It has received.
There is no interest between our company and Nihon Environment Co., Ltd. However, if you introduce it for reference, it will take about 1 week for delivery, and if the inspection result comes out, we will send a report in pdf file before sending the report. you can get.
In terms of unit price, the price of 4 harmful substances (lead, cadmium, mercury, total chromium) is 15,000 yen at a time, and the price of lead alone is 4,000 yen.

<Notes on chrome>
When we request an analysis from an external organization, we first measure total chromium from a cost perspective.
If the measurement result of total chromium is less than the standard value, it means that the hexavalent chromium, which is a harmful substance, is also less than the standard value.
In the unlikely event that total chromium exceeds the standard value, we will request the measurement and analysis of the content of hexavalent chromium only again.
Please note that total chromium is not hexavalent chromium.

X-ray fluorescence analysis

X-ray fluorescence analysis

Fluorescent X-ray analysis can identify the contained elements by measuring the energy of the fluorescent X-rays obtained by irradiating the sample with X-rays (qualitative analysis), and determine the concentration from the fluorescent X-ray intensity of each element. (Quantitative analysis) can be understood. In addition, the sample can be analyzed as it is with almost no need for troublesome pretreatment (such as dissolving the substance).
However, fluorescent X-ray analysis is a simple method and not a precise analysis, so it is necessary to use it properly according to the purpose.
We have introduced an X-ray fluorescence analyzer that can be analyzed relatively easily in order to build an environment in which we can quickly monitor and measure harmful substances.

The equipment introduced by our company is applicable not only to metals but also to resins, and it is possible to measure constituent elements including harmful substances such as cadmium, mercury, lead and chromium at the ppm level. Some elements cannot be measured due to the limit of fluorescent X-rays.

<< How to read the measurement result by our fluorescent X-ray measuring device >>
How to read the measurement results by our fluorescent X-ray measuring device

He: Element stands for element

ppm: Indicates the content of each element

+/-: Indicates uncertainty

In our company, in addition to the four harmful substances regulated by RoHS, Cd, Pb, Hg, and Cr, the constituent elements are displayed.
In this example, the four harmful substances Cd, Pb, Hg, and Cr are displayed as nd, which means that they were not detected (Not Detectable).
Also, for example, Cu (copper) is 532.1k (ppm), so k=1000, so 532100ppm, 1000ppm=0.1%, which means 53.21%.

UncertaintyStatistically indicates a value that is twice the standard deviation value (2σ), which means that the final measurement result exists within the range of 2σ with a probability of 2%.
For example, the result of Bi (bismuth) was 5890 ± 408, but since it is 2σha 408 ppm, it means that there is a final solution with a probability of 5482% within the range of 6298 ppm to 95.4 ppm.
Interpret the most probable value in that range as 5890ppm.

How to read the measurement results by our fluorescent X-ray measuring device

Meaning of setting thresholdWill be explained using a specific element (for example, Cd cadmium) as an example. Suppose the regulatory value for this element is 100 ppm. Not only this device but also all measuring devices have an error, and it is dangerous to judge that it is out of regulation if the measurement result is a little larger than the regulation value of 100 ppm. Therefore, set a range with a value slightly higher than 100 ppm as a reject limit value, and conversely with a value slightly lower than 100 ppm as a pass limit value.If the measurement result exceeds the reject limit value, that element If the measurement result is less than or equal to the pass upper limit value, nothing is put and the mark is marked as pass. What if the gray zone is between the fail threshold and the pass threshold? A mark is added to allow pass/fail judgment based on the measurement results. ? If there is a mark, it means that it is necessary to extend the measurement time to improve the accuracy, or to perform measurement again with another precision measurement and analysis instrument.

Simple lead detection method (Merck: Merckoquant series lead test kits...for solutions)

Wouldn't it be nice if you could more easily, easily and cheaply measure whether your own accessories contained harmful lead?
Even if we are a manufacturer, I think that it is necessary to carry out unannounced inspections of materials and products at appropriate intervals.
With that in mind, I tried to collect the information transmitted in Japan, but I suppose that because of the low recognition of lead in Japan, it is possible to directly inspect and analyze the metal = solid that is the target of this time. Could not be found.
One possibility is that Merck has released a test strip that can detect lead ions in liquids, which is already a problem.

  • Melcoquant lead test kit (appearance)

    Melcoquant lead test kit (appearance)

  • Melcoquant lead test kit (kit contents)

    Melcoquant lead test kit (kit contents)

We purchased this test paper and conducted a test to see how much lead-containing metal accessories could be eluted with the acetic acid solution contained in the kit to detect lead content.
This time, there are two types of low-meta rubber cast that contains a lot of lead (about 90% lead) and brass material for cutting (about 2-3% lead) used for the cap of the mobile phone strap (pine needle). I tested it.

<Brass material for cutting (lead content: about 2-3%)>
  • Brass material for cutting work (lead content about 2-3%) 30 minutes later: 40 mg/l

    30 minutes later: 40 mg/l

  • Brass material for cutting (lead content of about 2-3%) 60 minutes: 100 mg/l

    60 minutes: 100 mg/l

<Romata rubber cast (Lead content approx. 90%)>
  • Lometa rubber cast (lead content about 90%) 30 minutes later: 40 mg/l

    30 minutes later: 40 mg/l

  • Lometa rubber cast (lead content about 90%) 60 minutes: 100mg/l

    60 minutes: 100 mg/l

From the above results, it seems that it can be applied as a simple lead detection method for "problem of lead contained in metal accessories" using "Mercoquant's lead test kit" by Merck. Will be opened.
Note) 1 milligram is 0.001 grams.

Simple lead detection method (Merck: Merckoquant series lead test kits...for solutions)

Lead test kit for home use (2 pieces)

Lead test kit for home
(2 pieces)

In the United States, the use of lead-containing paints as a social problem caused a social problem, and in 1977 the use of lead-containing paints was banned.
Against this background, Hybrivet Systems, which is headquartered in the United States, sells a kit that makes it easy to test the lead of paint (paint) at home. It does not have to be in solution and can be inspected for solids such as paint.
The product name is "Lead Check Swabs", which is a paper cylinder with a thickness as small as a highlighter pen and less than 5 cm, and a fiber like a brush is attached to the tip. It is very easy to use, and it reacts the two kinds of substances contained in it, and rubs the test drug on the object for a few tens of seconds from the tip of the brush to see the reaction. Usually a yellow test drug will change from pink to red when it contains lead.

  • With the paper cylinder removed

    With the paper cylinder removed

  • Test drug is yellow to orange

    Test drug is yellow to orange

When I contacted Hybrivet Systems directly, they said that there is no distributor in Japan at this time and they are looking for a distributor.
This time, we decided to import it directly and ordered a large number of packages mainly for business.
Immediately, about two, low-metal rubber cast that contains a lot of lead (about 90% lead) and brass material for cutting (about 2-3% lead) used for the cap of the mobile strap (pine needle). I tested it.

Inspection method
Brass material for cutting
Brass material for cutting

The test drug turns pink
It is shown that it contains lead.

Rubber cast (low meta)
Rubber cast (low meta)

I could not confirm why the color of the reagent changed.
However, the place where the reagent was applied turned dark blue.

Comparison of low meta and high meta
Comparison of low meta and high meta

Because of the difference in lead content
The degree of discoloration was stronger in the low-metal containing more lead than in the high-metal containing less lead.

When we tested the surface of a metal accessory with plating, which is usually distributed in the world, no color change including lead was observed.
We would like to contact Hybrivet Systems to report why the color change of the reagent could not be confirmed by rubber cast containing a lot of lead, and report it.

There was a reply from Hybrivet Systems, and we re-tested.

Cause
It was found that the result of this rubber cast was due to long and strong rubbing during the inspection.
(I.e.
As instructed by Hybrivet Systems, I first cleaned the test surface and lightly applied the test drug to it.
As shown in the result on the right, it turned red indicating that it contained lead in less than 1 minute.
However, since rubber cast contains tin, it will eventually turn purple as shown above as time passes.
Result
Result

From the above results, it seems that it can be applied as a simple lead detection method for "problem of lead contained in metal accessories" using "Lead Check Swabs" of Hybrivet Systems. ..

From the above results, it seems that it can be applied as a simple lead detection method for "problem of lead contained in metal accessories" using "Lead Check Swabs" of Hybrivet Systems. ..

Since there are many requests for purchase from us, we now sell it.
In addition to lead detection, there are also RoHS detection substances such as mercury, chromium, cadmium detection and nickel detection for allergy control.

Introduction of hazardous substance inspection reagents

Product image Inspection target Detection limit Sales price Manufacturer Features
Pb (lead)
Pb (lead)
Paint: 0.5%
Surface: 1micro-g
Liquid: 10-20ppm
Please contact us Hybrivet Systems It is very easy to use, and the test drug is rubbed on the target object for a few tens of seconds from the tip of the brush to see the reaction.
Usually a yellow test drug will change from pink to red when it contains lead.
Pb (lead)
Pb (lead)
Paint: 0.5%
Surface: 1micro-g
Liquid: 10-20ppm
Please contact us Hybrivet Systems It is very easy to use, and the test drug is rubbed on the target object for a few tens of seconds from the tip of the brush to see the reaction.
Usually a yellow test drug will change from pink to red when it contains lead.
Cd (Cadmium)
Cd (Cadmium)
Surface: 1micro-g
Liquid: 5ppm
Please contact us Hybrivet Systems It is very easy to use, and the test drug is rubbed on the target object for a few tens of seconds from the tip of the brush to see the reaction.
Usually the yellow test drug turns pink to red when it contains cadmium.
Cr (chrome)
Cr (chrome)
Surface: 1micro-g
Liquid: 10-20ppm
Please contact us Hybrivet Systems It is very easy to use, and the test drug is rubbed on the target object for a few tens of seconds from the tip of the brush to see the reaction.
Usually the yellow test drug will turn from pink to red when it contains chrome.
Hg (mercury)
Hg (mercury)
Surface: 1micro-g
Liquid: 10-20ppm
Please contact us Hybrivet Systems It is very easy to use, and the test drug is rubbed on the target object for a few tens of seconds from the tip of the brush to see the reaction.
Usually the yellow test drug will turn from pink to red when it contains mercury.
Ni (nickel)
Ni (nickel)
Surface: 1micro-g
Liquid: 10ppm
Please contact us Hybrivet Systems It is very easy to use, and the test drug is rubbed on the target object for a few tens of seconds from the tip of the brush to see the reaction.
Usually a yellow test drug will turn from pink to red when it contains nickel.

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