Chemical Substances Control

Our Concepts

The SII Group believes that the safe and appropriate chemical substances control is corporate responsibility and important activity for risk management. In terms of chemical substances used in our manufacturing processes at sites in Japan, we control the use and emission of PRTR* substances, 23 substances voluntarily specified by SII, and 100 VOC (volatile organic compounds) substances.

*PRTR (Pollutant Release and Transfer Register): This system is designed to assess, gather, and disclose data on the volume of chemical materials handled, amounts released into the environment, and volumes transferred in waste materials to points outside the site locations. Companies collect data on the relevant substances and report them to the appropriate government agency once a year.

FY 2019 Overview

The FY 2019 total emission of chemical substances subject to control in manufacturing process was 24.3 tons, which was approximately 2 tons less than the total for FY 2018. The amount of PRTR substances handled was 73.4 tons, which was 7.2 tons more than the amount for FY 2018. The breakdown of the amount handled and emitted is shown below.

Breakdown of PRTR Substances (Amount handled and emitted)

FY 2019 PRTR Survey Results (SII sites in Japan only)

PRTR
(Unit: kg)
Chemical Substance Amount Handled Released Transferred Recycled Consumed Removed and Treated
1.
Released to the atmosphere
2.
Releases to public water systems
3.
Released to soil
4.
On-site landfill
5.
Transferred to sewage systems
6.
Transferred as waste
7.
Transferred as valuable waste
8.
Transferred as products
9.
Break-down and reaction
Ethylbenzene 603 161 0 0 0 0 0 442 0 0
Ferric chloride 12,210 0 0 0 0 0 0 0 0 12,210
Xylene 4,231 202 0 0 0 0 108 714 0 3,207
Cobalt and its compound 17,192 0 0 0 0 0 8 325 16,859 0
Inorganic cyano compounds (excluding complex salts and cyanates) 749 18 0 0 0 0 0 0 0 731
  3,950 43 0 0 0 0 95 0 0 3,812
1,3,5-trimethylbenzene 723 22 0 0 0 0 0 687 0 14
Toluene 1,834 1,107 0 0 0 0 727 0 0 0
Lead compounds 2,570 0 0 0 0 0 1,826 0 744 0
Nickel compounds 1,042 0 2 0 0 0 534 27 479 0
Phenol 1,462 219 0 0 0 0 1,169 0 0 74
Hydrogen fluoride and its water-soluble salts 13,545 3 7 0 0 0 12,858 0 0 677
Boron and its compounds 140 0 132 0 0 0 5 0 0 3
Manganese and its compounds 8,902 0 0 0 0 0 1,480 0 7,422 0
  4,233 21 0 0 0 0 0 0 0 4,212
Total 73,386 1,796 141 0 0 0 18,810 2,195 25,504 24,940

Measures against Ozone Depleting Substances

SII has completed the total elimination of specified chlorofluorocarbons (CFCs), which are ozone depleting substances, used in our manufacturing processes, however we still use CFCs as refrigerant for chillers and air-conditioners. Our sites in Japan are in accordance with the CFC emissions law and have been striving to prevent leaks during use in addition to disposal through conducting simple checks and periodic inspections since FY 2015.