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.

  • *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.
  • 3-056
Major Initiatives

Controlling VOC EmissionsVOC Emissions Increased by 7.1% Compared with the Fiscal 2016 Level

Sekisui Chemical maintains the medium-term target of reducing VOC emissions by more than 3% compared with the fiscal 2016 level. In fiscal 2018, VOC emissions in Japan increased by 7.1% compared with fiscal 2016. The reason for the greater emissions was a higher volume of production by the Adhesive Tape Manufacturing Department, which uses solvents

Preventing Air and Water PollutionManaging Gas Emissions and Wastewater in Accordance with Regulations

Sekisui Chemical Group complies with the regulatory values under laws and ordinances for the various types of equipment it uses in connection with exhaust gases and water drainage. We also strive to control the discharge of pollutants through appropriate maintenance and management, including periodic inspections.

Soil SurveysSurveys of All Planned Business Sites Completed

We drew up plans to conduct a self-assessment of soil contamination at our business sites and conducted ongoing surveys. The planned business site surveys had all been completed by fiscal 2011. Surveys have also been conducted since fiscal 2012 as and when required. In fiscal 2018, conditions did not require any assessments of soil contamination.

Disposal and Storage of Devices Containing PCBs and Management of Equipment That Uses FluorocarbonsProperly Storing and Disposing of Devices Containing PCBs in Line with Regulations

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.

Response in EmergenciesTraining to Respond to Unforeseen Events That Impact the Environment

To prevent and mitigate environmental pollution during an emergency, our employees at each business site are trained at least once a year in emergency procedures and communications for a variety of scenarios unique to each business site. The implementation results from the main training held in fiscal 2018 are set out below.

  • Training for Measures to Be Done / Notices to Be Made in Time of Emergency

    • 3-057
    Simulated emergency situation Number of times drills performed
    Leakage and outflow of oils 41
    Atmospheric discharge of solvents 0
    Fire 35
    Earthquake 16
    Emergency communication training 7
    Comprehensive disaster drills 32
    Responding to other equipment-related emergencies 11
Performance Data

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

  • 3-058
(Tons)
Substance Govt.
ordinance
notification
no.
Emission
volume
Transfer volume Transfer volume Detoxification
Atmospheric Public
water areas
In-house soil In-house
landfill
Sewage
system
Transfer in
waste
disposal
Transfer in
waste
recycling
Acrylic acid and aqueous salt solutions thereof [4] 15.9 0 0 0 0 0 0 1.6 14
n-Butyl acrylate [7] 230.9 0.27 0 0 0 0 0 1.8 229
Acrylonitrile [9] 468.3 3.7 0 0 0 0 0 0.008 465
Acetaldehyde [12] 260.3 0.19 0 0 0 0 0 0 260
Acetonitrile [13] 90.1 7.2 0 0 0 0 0 83 0
2,2’-Azobisisobutyronitrile [16] 5.5 0 0 0 0 0 0 0 5.5
Antimony and its compounds [31] 11.5 0 0 0 0 0 0 1.2 0
Isobutyraldehyde [35] 175.3 1.8 0 0 0 0 0 0 173
2-Ethylhexanoic acid [51] 6,617.50 0 0 0 0 0 0 5.6 6,608
Ethylbenzene [53] 2.1 2.1 0 0 0 0 0 0 0
ε-Caprolactam [76] 55.4 0 0.018 0 0 0 0 0 55
Xylene [80] 37.1 2.3 0 0 0 0 0 0.0061 35
Vinyl chloride [Special94] 107,244.10 4 0.12 0 0 0 0 0 107,240
Chloroform [127] 7.8 0.42 0 0 0 0 0 4.4 0.8
Vinyl acetate [134] 58.5 4.6 0 0 0 0 0 4.0 50
Inorganic cyanide compounds
(not including complex salts and cyanate)
[144] 61.6 0 0 0 0 0 0 0 62
Cyclohexylamine [154] 9.3 0.52 0 0 0 0 0 0 8.7
Methylene chloride [186] 202 2.6 0 0 0 0 0 0 199
Divinylbenzene [202] 2 0 0 0 0 0 0 0 2
2,6-di-t-butyl-4-cresol [207] 62.4 0 0 0 0 0 0 0 62
N,N-dimethylacetamide [213] 4 0.016 0 0 0 2.5 0 1.5 0
Organic tin compounds [239] 133.5 0 0 0 0 0 0 0.67 0
Styrene [240] 1,470.50 33 0 0 0 0 0 0.011 776
Terephthalic acid [270] 80.2 0 0 0 0 0 0 0 80
n-Dodecyl alcohol [273] 23.2 0 0 0 0 0 0 0 23
1,2,4-Trimethylbenzene [296] 1.4 1.4 0 0 0 0 0 0 0
Tolylene Diisocyanate [298] 9.6 0 0 0 0 0 0 0 0
Toluene [300] 818.2 337 0 0 0 0 0 42 396
Lead compounds [Special305] 560.5 0 0 0 0 0 0.069 2.5 59
Phenol [349] 23.4 0.0021 0 0 0 0 0 0.038 21
Bis-(2-ethylhexyl) phthalate [355] 1,019.90 0 0 0 0 0 0 1.5 0
n-Hexane [392] 299.9 226 0 0 0 0 0 11 63
Poly (oxyethylene) = alkyl = ether (C = 12-15 and other blends) [407] 2.8 0 0 0 0 0 0 0 0
Formaldehyde [Special411] 16.3 0.0093 0 0 0 0 0 0 16
Manganese and its compounds [412] 7 0 0 0 0 0 0 7 0
Methacrylate [415] 224.5 1.3 0 0 0 0 0 0.005 223
Methyl methacrylate [420] 154.4 1.4 0 0 0 0 0 0 153
Methylnaphthalene [438] 7 0.034 0 0 0 0 0 0 6.9
Methylenebis (4,1-phenylene) = diisocyanate [448] 1,455.40 0 0 0 0 0 5.0 0.17 1,429
  121,929.0 630 0.14 0 0 2.5 5 168 118,716
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
  • 3-059
  • 3-060
  • 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
  • 3-061
  • 3-062
  • 3-063
  • NOx Emissions / Japan

    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

    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 emissions Soot and Dust emissions =Σ(amount of exhaust gas airflow per year x soot concentration)