Chemical Substance Management

Minimizing Environmental Impact through Proper Control and Emission Reductions of Chemical Substances

Management Approach

Basic ConceptMinimizing Environmental Impact through Proper Control and Emission Reductions of Chemical Substances

While chemical substances make people's lives more convenient, they also could have harmful effects on the environment or on human beings. Therefore, we believe that consideration of product safety, occupational safety and health, and environmental impact through proper management of chemical substances is an important responsibility of an enterprise.

Since fiscal 1999, SEKISUI CHEMICAL Group has set and worked toward its own targets for reducing emissions and the transfer of chemical substances in addition to implementing efforts such as the Product Assessment System for Environmental Impact*1 and the Green Procurement System*2. Periodically we also review chemical substances, in accordance with the establishment and amendment of relevant laws and regulations.

From fiscal 2020, we will continue to engage in thoroughgoing chemical substance management activities with a view toward minimizing their impact.

  • *1 Product Assessment System for Environmental Impact:
    A system for assessment of the environmental impact of product development all the way from raw material procurement through manufacture, use, disposal, transport, and all other stages.
  • *2 Green Procurement System:
    A system of giving priority to choosing raw materials, parts, etc. with lower levels of environmental impact when procuring them.
  • 11-92
Major Initiatives

Controlling VOC Emissions

SEKISUI CHEMICAL maintains the medium-term target of reducing VOC emissions by 1% or more compared with the fiscal 2019 level. In fiscal 2020, VOC emissions in Japan increased by 7.7% compared with fiscal 2019.

The reason for the increase was increased production volume in the Adhesive Tape Manufacturing Department, which uses solvents.

Preventing Air and Water Pollution

SEKISUI CHEMICAL Group complies with the regulatory values under laws and ordinances for equipment it uses in connection with exhaust gases and water drainage.

Soil Contamination Countermeasures

SEKISUI CHEMICAL Group conducted a self-assessment of soil contamination at all of its production sites. The Group has cleaned up and taken steps to prevent spread at all locations where contamination was found as well as completed its report to the government. In addition, the Group continuously monitors groundwater, taking ongoing steps to verify that no pollution leakage has occurred.
Moreover, the Group takes legally mandated decontamination measures when selling land on which production facilities have been closed. In fiscal 2020, conditions did not require any new measures to be taken.

Disposal and Storage of Devices Containing PCBs and Management of Equipment That Uses Fluorocarbons

Transformers and condensers that contain PCBs are being disposed of steadily, where PCB treatment facilities are available. Machines and equipment in storage that contain PCBs are managed strictly and thoroughly, through means including locked storage and periodic inspection.
Steps are being taken to enhance awareness toward mandatory requirements regarding equipment that use fluorocarbons in accordance with Japan’s Act on Rational Use and Proper Management of Fluorocarbons (Freon Emission Control Act) and to ensure thoroughgoing management including periodic inspection.

Performance Data
  • Note:
    From fiscal 2019, Medical Business results are collated and presented with Headquarters results following its separation from the High Performance Plastics Company as an independent entity.

Aggregated Results Based on the PRTR Law (Substances Handled at Business Sites Subject to Assessment with a Handling Volume 1 Ton or More Are Aggregated)

(Tons)
Substance Govt.
ordinance
notification
no.
Emission
volume
Emission volume Transfer volume Detoxification
Atmospheric Public
water areas
In-house soil In-house
landfill
Sewage
system
Transfer in waste disposal Transfer in waste recycling
Ethyl acrylate [4] 1.3 0.082 0 0 0 0 0.12 0 1.1
n-Butyl acrylate [7] 246.9 2.0 0 0 0 0 1.4 3.0 241
Acrylonitrile [9] 413.6 3.4 0 0 0 0 0 0.0080 410
Acetaldehyde [12] 166.7 0.12 0 0 0 0 0 0 167
Acetonitrile [13] 83.0 6.6 0 0 0 0 0 76 0
2,2’-Azobisisobutyronitrile [16] 5.0 0 0 0 0 0 0 0 5.0
Antimony and its compounds [31] 7.2 0 0 0 0 0 0 0.72 0
Isobutyraldehyde [35] 44.0 1.1 0 0 0 0 0 0 43
2-Ethylhexanoic acid [51] 5,32 0.6 0 0 0 0 0 4.5 5,308
Ethylbenzene [53] 1.7 1.7 0 0 0 0 0 0 0
Ethylenediamine [59] 4.8 0.46 0 0 0 0 0 0 4.4
ε-Caprolactam [76] 25.7 0 0.008 0 0 0 0 0 26
Xylene [80] 22.7 2 0 0 0 0 0.036 0 21
Hexavalent chromium compounds [Special 88] 2.1 0 0 0 0 0 0 0.0045 0
Vinyl chloride [Special 94] 116,165.2 3.9 0.11 0 0 0 0 0 116,161
Chloroform [127] 5.3 0.28 0 0 0 0 0 3.1 0.53
Cobalt and cobalt compounds [132] 1.1 0 0.096 0 0 0 0 0 1.0
Vinyl acetate [134] 48.4 4.6 0 0 0 0 2.9 0 41
Inorganic cyanide compounds
(not including complex salts and cyanate)
[144] 13.3 0 0 0 0 0 0 0 13
Cyclohexylamine [154] 5.5 0.31 0 0 0 0 0 0 5.2
Methylene chloride [186] 420.6 5.5 0 0 0 0 0 0 415
Divinylbenzene [202] 2.2 0 0 0 0 0 0 0 2.2
2,6-di-t-butyl-4-cresol [207] 9.1 0 0 0 0 0 0 0 9.1
N,N-dimethylacetamide [213] 2.4 0 0 0 0 0 0 2.4 0
N,N-dimethylformamide [232] 1.1 0 0 0 0 0 0 1.1 0
Organic tin compounds [239] 138.1 0 0 0 0 0 0.077 1.2 2.3
Styrene [240] 1,076.6 23 0 0 0 0 11 0.017 451
n-dodecyl alcohol [273] 7.5 0 0 0 0 0 0 0 7.5
1,2,4-Trimethylbenzene [296] 1.2 1.2 0 0 0 0 0 0 0
Tolylene Diisocyanate [298] 12.8 0 0 0 0 0 0 0 0
Toluene [300] 820.4 346 0 0 0 0 23 93 358
Lead compounds [Special 305] 519.3 0 0.0022 0 0 0 0.27 4.2 46
Nickel compound [Special 309] 1.0 0 0 0 0 0 0.32 0 0
Bis-(2-ethylhexyl) phthalate [355] 3.4 0 0 0 0 0 1.7 0 0
n-Hexane [392] 248.0 235 0 0 0 0 0.35 7.3 5.3
Boron and its compounds [405] 33.1 0 0 0 0 0 0 0 0
Poly (oxyethylene) = alkyl = ether
(C = 12-15 and other blends)
[407] 15.4 0 0 0 0 0 0 0 13
Manganese and its compounds [412] 4.2 0 0 0 0 0 0 4.2 0
Methacrylate [415] 249.9 1.4 0 0 0 0 0 0.0060 248
Methyl methacrylate [420] 165.8 1.4 0 0 0 0 0 0 164
Methylnaphthalene [438] 1.5 0.0074 0 0 0 0 0 0 1.5
Methylenebis (4,1-phenylene)
= diisocyanate
[448] 1,637.9 0 0 0 0 0 2.1 0 1,629
    127,955.8 640 0.22 0 0 0 44 201 125,801
Index Calculation Method
Volume of chemical substances handled Volume of handling of substances subject to regulation by the PRTR Law
[Production sites and research institutes in Japan are subject to assessment]
Volume of emissions / transfer of chemical substances Volume of emission / transfer of chemical substances subject to regulation by the PRTR Law:
Volume of emissions = Volume of emissions into the air + Volume of emissions into public waters + Volume of emissions into the soil on-site + Volume disposed by burial on-site
Transfer volume = Volume transferred to sewers + Volume transferred as waste material
[Covers production sites and research facilities in Japan]
Volume of chemical substances subjected to detoxication Volume of chemical substances subject to regulation by the PRTR Law subjected to detoxication:
Amount detoxified = Amount consumed in reaction + Amount consumed through combustion, etc.
[Covers production sites and research facilities in Japan]
  • 11-95
  • 11-96
  • Chemical Substance Emission and Transfer Volumes (PRTR Law) / Japan

    Index Calculation Method
    Volume of emission /transfer of chemical substances Volume of emission / transfer of chemical substances subject to regulation by the PRTR Law
    Volume of emission = Volume of emission into the atmosphere + Volume of emission into the public waters + Volume of emission into the soil on site + Volume disposed of as landfill; Volume of transfer = Volume discharged into sewage systems + Volume discharged as waste elsewhere
    Production sites and research institutes in Japan are subject to assessment
  • Discharge of Volatile Organic Compounds (VOCs) into the Atmosphere / Japan

    Index Calculation Method
    VOC emissions Volume of emission into the atmosphere of volatile organic compounds (VOC) among the substances subject to regulation by the PRTR Law and Japan Chemical Industry Association
  • 11-99
  • 11-100
  • 11-103
  • NOx Emissions / Japan

    Note: Some past figures have been revised due to improvements in precision.

    Index Calculation Method
    NOx emissions NOx emissions =Σ(Amount of exhaust gas airflow per year x NOx concentration x 46/22.4)
  • SOx Emissions / Japan

    Note: Some past figures have been revised due to improvements in precision.

    Index Calculation Method
    SOx emissions SOx emissions =Σ(amount of SOx per year x 64/22.4)
  • Soot and Dust Emissions / Japan

    • Some past figures have been revised due to improvements in precision.
    Index Calculation Method
    Soot and Dust emissioans Soot and Dust emissions =Σ(amount of exhaust gas airflow per year x soot concentration)