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Reducing Chemical Substance Emissions

Each MGC Group company assesses and submits notifications on substances subject to the chemical substance emission notification system of the country in which it is based (PRTR in Japan), while working to reduce the amounts released and transferred.

Substances Subject to Notification under the PRTR Law (MGC Group)

Many countries have systems that require notifications regarding chemical substance emission in a similar way to Japan's PRTR Law (TRI in the US, etc.). In its tabulation, MGC has aggregated substance emissions reported by the non-consolidated MGC and by domestic MGC Group companies based on the PRTR Law, and emissions reported by overseas group companies under the laws of their respective countries and regions for substances listed under Japan’s PRTR system or for which there is a CAS number.

Substance emissions (in accordance with the PRTR Law)

Substance emissions (in accordance with the PRTR Law)

Substance transfers (in accordance with the PRTR Law)

Substance transfers (in accordance with the PRTR Law)

High-emission Substances Notified under the PRTR Law (Non-consolidated MGC and Domestic MGC Group)

Among the substances notified under the PRTR Law, those listed below were emitted by the non-consolidated MGC and domestic MGC Group in total in amounts of 10 tons or more.

Government-designated number Substance Emissions (tons)
FY 2017 FY 2018 FY 2019
128 Chloromethane 567 590 307
296 1,2,4-Trimethylbenzene 99 113 161
186 Dichloromethane 78 87 74
80 Xylene 24 18 20
300 Toluene 14 13 14

* Past data has been reviewed and corrected.

Japan Chemical Industry Association PRTR-targeted Substances (Non-consolidated)

The Japan Chemical Industry Association (JCIA), of which MGC is a member, has specified 328 Class I Designated Chemical Substances stipulated by the PRTR Law, and a JCIA-specified 90 substance plus 1 substance group as voluntary PRTR-targeted substances considered volatile organic compounds (VOCs). The JCIA tabulates the emissions of member companies, and the entire chemical industry is working toward reducing emissions of these PRTR substances.
The amount of said substances emitted by MGC in fiscal 2019 totaled 70 substances and 355 tons, an increase of around 9%. This was due to issues occurring at facilities for recovering exhaust gas. MGC will continue its efforts to reduce emissions occurring in conjunction with facility shutdowns and similar factors, by implementing measures to reduce problems at plants and taking other action.