Management of Chemical Substances and Reduction of Hazardous Substances

Management of PRTR-Designated Substances

Management of PRTR-Designated Substances

Among the chemical substances regulated by the PRTR Law *1, benzene, toluene, xylene, normal hexane and other highly volatile substances contained in crude oil, petroleum products, petrochemical raw materials will be partially evaporated into the atmosphere as VOC *2 whenever oil is transferred into or removed from storage tanks as well as when it is loaded onto tanker trucks and ships. To minimize such VOC emissions, the Idemitsu Group stores these chemicals in floating roof tanks that reduce evaporation, and carries out measures aimed at ensuring VOC recovery during transport. Chemical substances transferred to locations outside complexes are disposed of in compliance with the Waste Disposal and Public Cleansing Law.

  • *1 PRTR: Pollutant Release and Transfer Register
  • *2 VOC: Volatile Organic Compounds
Discharge and transfer of PRTR-Designated substances(Idemitsu FY2018 Results)
CAS
No.
Substance name Unit Discharged amount Transferred
amount
Total
Atmosphere Water body Soil
1 water-soluble compounds of zinc t 0.0 0.8 0.0 0.0 0.8
13 acetonitrile t 0.0 0.0 0.0 1.1 1.1
20 2-aminoethanol t 0.0 0.0 0.0 50.6 50.6
33 asbestos t 0.0 0.0 0.0 34.4 34.4
37 4,4'-isopropylidenediphenol (commonly known as bisphenol A) t 0.0 0.0 0.0 3.0 3.0
53 ethylbenzene t 7.4 0.0 0.0 0.8 8.2
80 xylene t 13.7 0.0 0.0 59.0 72.7
104 chlorodifluoromethane t 0.8 0.0 0.0 0.0 0.8
186 dichloromethane t 0.4 0.0 0.0 10.7 11.1
190 dicyclopentadiene t 0.3 0.0 0.0 0.0 0.3
232 N, N-dimethylformamide (DMF) t 0.0 0.0 0.0 9.5 9.5
240 styrene t 28.0 0.0 0.0 6.5 34.5
262 tetrachloroethylene (TCE) t 0.0 0.0 0.0 1.4 1.4
296 1,2,4-trimethylbenzene t 1.1 0.0 0.0 0.0 1.1
297 1,3,5-trimethylbenzene t 0.2 0.0 0.0 0.0 0.2
300 toluene t 19.4 0.0 0.0 117.6 136.9
302 naphthalene t 0.1 0.0 0.0 0.0 0.1
308 nickel t 0.0 0.0 0.0 17.0 17.0
309 nickel compounds t 0.0 0.0 0.0 0.6 0.6
321 vanadium compounds t 0.0 0.0 0.0 29.0 29.0
349 phenol t 0.2 0.0 0.0 6.7 6.9
389 hexadecyltrimethylammonium chloride t 0.0 9.8 0.0 0.0 9.8
392 n-hexane t 40.4 0.0 0.0 2.6 43.0
400 benzene t 4.3 0.0 0.0 0.0 4.4
406 polychlorinated biphenyls (PCB) t 0.0 0.0 0.0 4.2 4.2
411 formaldehyde t 0.0 0.0 0.0 33.6 33.6
412 manganese and its compounds t 0.0 0.0 0.0 8.0 8.0
453 molybdenum and its compounds t 0.0 0.0 0.0 22.0 22.0
  • * Scope of data: Hokkaido Refinery, Chiba Complex, Aichi Refinery, Tokuyama Complex, Cray Valley Idemitsu Corporation, Prime Polymer Co. Ltd., Anesaki Works, BASF
    Idemitsu Co., Ltd., Omaezaki Factory, Advanced Technology Research Laboratories, Technology & Engineering Center
  • * Chemicals are not listed if the total volume of discharge and transfer is less than 0.1 ton per year. Figures presented above may not be consistent with the totals since they
    are rounded off to the nearest one decimal place.
Discharge and transfer of PRTR-Designated substances (Showa Shell FY2018 Results)
CAS
No.
Substance name Unit Discharged amount Transferred
amount
Total
Atmosphere Water body Soil
33 asbestos t 0.0 0.0 0.0 0.2 0.2
53 ethylbenzene t 1.0 0.0 0.0 0.0 1.0
80 xylene t 5.9 0.0 0.0 0.0 5.9
243 dioxins mg-TEQ 0.00 0.26 0.00 0.00 0.26
296 1,2,4-trimethylbenzene t 0.6 0.0 0.0 0.0 0.6
297 1,3,5-trimethylbenzene t 0.1 0.0 0.0 0.0 0.1
300 toluene t 24.8 0.0 0.0 0.0 24.8
392 n-hexane t 67.0 0.0 0.0 0.0 67.0
400 benzene t 7.7 0.0 0.0 0.0 7.7
  • * Scope of data: Showa Yokkaichi Sekiyu Co., Ltd., TOA Oil Co., Ltd., Seibu Oil Co., Ltd.
  • * Reporting period: April 2018 to March 2019
  • * Chemicals are not listed if the total volume of discharge and transfer is less than 0.1 ton per year. Figures presented above may not be consistent with the totals since they
    are rounded off to the nearest one decimal place.
出光興産, DFF Inc.