Environmental Measures

Chemical Substances Management

Minimizing Chemical Substance Risks

The Dexerials Group believes that thorough compliance with chemical substances is indispensable to continue providing safe and secure products to our customers into the future. To put this belief into practice, we have built the Chemical Substance Management Committee to ensure proper and integrated management of chemical substances used in the Company.

Chemical Substance Management Committee

Response to the Pollutant Release and Transfer Register (PRTR) Law

The Group ascertains the results of release and transfer volumes of chemical substances based on the PRTR Law, and reports the total amounts for each year. Chemical substance release and transfer volumes for each plant in the fiscal 2021 are shown below.
We use a method to divide data into release or transfer based upon the distribution coefficient* of actual purchase of chemical substances.
At Dexerials, adhesives and adhesive tapes using many organic solvents are produced, so the emissions volume of toluene, etc., is high as a result.
Regarding these organic solvents, the volatile gases emitted during the manufacture of adhesive tape are recovered, and re-used as energy by means of a heat exchange through combustion in a boiler.

  • * Distribution coefficient: A method of calculating the value of corresponding changes in actual purchase values by setting a coefficient for movements/emission volumes inthe product manufacturing process.

FY 2021 PRTR Substances

Plant Chemical substance Release/transfer volume calculation (t)
Kanuma Plant Acrylic acid and its water soluble salts 0.143
2-Hydroxyethyl acrylate 0.164
n-Butyl acrylate 2.351
Antimony and its compounds 0.102
Ethylbenzene 0.122
Xylene 0.112
Toluene 7.850
Hexamethylene diacrylate 0.558
Nickel 0.003
Dexerials Precision Components Corporation Nickel compound 0.190
Manganese and its compounds 0.150

Appropriate Management of Chemical Substances

Because chemical substances have a risk of adverse effects on the environment and health, for all chemical substances introduced, we conduct risk evaluations and apply Dexerials proprietary classifications based on risk assessment methods and are strengthening use management.
Regarding classification standards, the risk impact is correctly determined using criteria such as laws and GHS classification results*1.

  • *1 GHS Classification: GHS, or the “Globally Harmonized System of Classification and Labelling of Chemicals,” classification standards adopted by the UN in July 2003 for chemicals according to the types of hazards.

Chemical Substance Management Education

The Dexerials Group frequently uses chemical substances in R&D and product manufacturing.
For that reason, thorough education regarding chemical substances is given to employees from the time they join the Company, through OJT provided at their assigned positions, e-learning, or instructions by internal experts. The subjects of education range from those legally required to those aimed at making improvements at the workplace.
We have also added new sensory software to our virtual reality (VR) system allowing participants to experience simulated hazards in our sensory training program, which has been in place since fiscal 2021, to make our education more effective.
Further, as a measure against COVID-19, we have continued to hold group training sessions with a limited number of participants as well as online training sessions in 2022.

Internal Web Portal to Regulatory Information
on Chemical Substances

Training session using VR

Formulation and Dissemination of the Dexerials Group Code of Conduct

The Dexerials Group uses a system to manage raw materials that are purchased and chemicals/reagents that are widely used by development divisions. Under the system that we operate, chemicals are recorded in a chemical substance database so that the data can then be output by item for PRTR totals and other objectives.This is useful for preventing compliance violations, as it can be widely used for investigations into the use of chemical substances by individual manufacturing divisions, R&D divisions, regulations or substance at sites in Japan and overseas, and to respond to revisions in applicable laws.

Comprehensive Management System for Chemical Substances