Environmentally Hazardous Substances

The Mitsui Chemicals Group is monitoring emissions of volatile organic compound (VOC), NOx, Sox, soot and dust, hazardous air pollutants, and substances subject to the PRTR Act, and working to reduce environmental impact.

*Please refer herefor scope of data.

Air

Of the hazardous air pollutants specified under the Air Pollution Control Act, we are particularly focused on reducing emissions of priority substances that pose a significant health risk.

The Japanese government set a target of reducing fixed-source volatile organic compound (VOC) emissions in fiscal 2010 by 30% compared with fiscal 2000. VOC emissions at Mitsui Chemicals reached 8,523t in fiscal 2000, so our goal is 5,966 tons/year. However, the Company established an even stricter goal and achieved emissions of less than 3,000 tons/year in fiscal 2010. We have since continued maintaining emissions at this level. Because the Mitsui Chemicals Group produces various chemical products, a wide range of VOCs are subject to reduction, such as solvents used in production and decomposed residue from plastic molding. We use various methods to reduce VOC emissions into the air, including absorption by activated carbon and other filters, neutralization by acid or alkaline water, combustive decomposition, and Pressure Swing Adsorption (PSA).

Further, burning fuel in chemical manufacturing processes generates SOx, NOx, and soot and dust. We therefore implement a variety of measures to reduce release of these items into the atmosphere by removing them using catalysts, installing dust collectors and washing towers, and using fuels free from nitrogen and sulfur.

Volatile Organic Compound (VOC) Emissions

Volatile Organic Compound (VOC) Emissions

* Mitsui Chemicals, Inc. emitted 1,575 tons achieved its goal of less than 3,000 tons/year in FY2019.

NOx Emissions

NOx Emissions

SOx Emissions

SOx Emissions

Soot and Dust Emissions

Soot and Dust Emissions

Emissions of Hazardous Air Pollutants (Mitsui Chemicals, Inc.)

Emissions of Hazardous Air Pollutants (Mitsui Chemicals, Inc.)

*Precious emission figures: 771 tons (FY1995), 445 tons (FY2000), 110 tons (FY2005)

Substances Subject to the PRTR Act

In accordance with the Law Concerning Reporting, etc. of Releases to the Environment of Specific Chemical Substances and Promoting Improvements in Their Management(PRTR* Act), Mitsui Chemicals submits a report to the Japanese government each year declaring the amounts of designated substances produced or used by the Company that were released into the environment or transferred elsewhere. We are further reinforcing our management while also seeking other ways to reduce annual emissions 450tons or less.

*PRTR: Pollutant Release and Transfer Register.

Substances Subject to the PRTR Act Emissions (Mitsui Chemicals, Inc.)

ubstances Subject to the PRTR Act Emissions (Mitsui Chemicals, Inc.)

*Scope of Mitsui Chemicals, Inc.: Parent company production sites and the Sodegaura Center.

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