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Working Environment Evaluation Standards
Ministry of Labour Notification No. 79 of September 1, 1988

Latest Amendments:
Ministry of Health, Labour and Welfare Notification No.465 of Augst 2, 2007

In Japanese

Attached Table

  1. Kinds of substancesAdministrative Control Level
  2. Dust of sand and stones, rocks, ores(minerals), metallic materials or carbon   E=
    E administrative control level (mg/m3)
    Q content of free silica (parcent)
  3. Acrylamide   0.3 mg/m3
  4. Acrylonitrile   2 ppm
  5. Alkyl mercury compounds (restricted to the substances in which alkyl radicals are methyl or ethyl radicals)   0.01 mg/m3 as mercury
  6. Ethylenimine   0.5 ppm
  7. Ethylene oxide   1 ppm
  8. Vinyl chloride   2 ppm
  9. Chlorine   0.5 ppm
  10. Chlorodiphenyl (otherwise known as PCB)   0.1 mg/m3
  11. Cadmium and its compounds   0.05 mg/m3 as cadmium
  12. Chromic acid and its salts   0.05 mg/m3 as chromium
  13. Vanadium pentoxide   0.03 mg/m3 as vanadium
    1. Coaltar   0.2 mg/m3 as benzene solublity
    2. Arsenic trioxide   0.003mg/m3 as arsenic
  15. Potassium cyanide   3 mg/m3 as cyanogen
  16. Hydrogen cyanide   3 ppm
  17. Sodium cyanide   3 mg/m3 as cyanogen
  18. 3,3' -Dichloro-4,4' -diaminodiphenyl methane   0.005 mg/m3
  19. Methyl bromide   5 ppm
  20. Dichromic acid and its salts   0.05 mg/m3 as chromates
  21. Mercury and its inorganic compounds (excluding mercury sulfide)   0.025 mg/m3 as mercury
  22. Tolylene diisocyanate   0.005 ppm
  23. Nickel carbonyl   0.001 ppm
  24. Nitroglycol   0.05 ppm
  25. p-nitrochlorobenzene   0.6 mg/m3
  26. Hydrogen fluoride   2 ppm
  27. β-Propiolactone   0.5 ppm
  28. Beryllium and its compounds   0.002 mg/m3 as beryllium
  29. Benzene   1 ppm
  30. Pentachlorophenol (otherwise known as PCP) and its sodium salts   0.5 mg/m3 as penta chlorophenol
  31. Manganese and its compounds (excluding basic manganese oxide)   0.2 mg/m3 as manganese
  32. Methyl iodide   2 ppm
  33. Hydrogen sulfide   5 ppm
    1. Dimethyl sulfate   0.1 ppm
    2. Asbestos   0.15 F/cm3 as fibers longer than 5 µm
  35. Lead and its compounds   0.05 mg/m3 as lead
  36. Acetone   500 ppm
  37. Isobutyl alcohol   50 ppm
  38. Isopropyl alcohol   200 ppm
  39. Isopentyl alcohol (otherwise known as isoamyl alcohol)   100 ppm
  40. Ethyl ether   400 ppm
  41. Ethyleneglycol monoethyl ether (otherwise known as cellosolve)   5 ppm
  42. Ethyleneglycol monoethyl ether acetate (otherwise known as cellosolve acetate)   5 ppm
  43. Ethyleneglycol mono-n-butyl ether (otherwise known as butyl cellosolve)   25 ppm
  44. Ethyleneglycol monomethyl ether (otherwise known as methyl cellosolve)   5 ppm
  45. o-Dichlorobenzene   25 ppm
  46. Xylene   50 ppm
  47. Cresol   5 ppm
  48. Chlorobenzene   10 ppm
  49. Chloroform   10 ppm
  50. Isobutyl acetate   150 ppm
  51. Isopropyl acetate   100 ppm
  52. Isopentyl acetate (otherwise known as isoamyl acetate)   100 ppm
  53. Ethyl acetate   200 ppm
  54. n-Butyl acetate   150 ppm
  55. n-Propyl acetate   200 ppm
  56. n-Pentyl acetate (otherwise known as n-amyl acetate)   100 ppm
  57. Methyl acetate   200 ppm
  58. Carbon tetrachloride   5 ppm
  59. Cyclohexanol   25 ppm
  60. Cyclohexanone   25 ppm
  61. 1,4-Dioxane   10 ppm
  62. 1,2-Dichloroethane (otherwise known as ethylene dichloride)   10 ppm
  63. 1,2-Dichloroethylene (otherwise known as acetylene dichloride)   150 ppm
  64. Dichloromethane (otherwise known as methylene dichloride)   50 ppm
  65. N,N-Dimethylformamide   10 ppm
  66. Styrene   20 ppm
  67. 1,1,2,2-Tetrachloroethane (otherwise known as tetrachloroacetylene)   1 ppm
  68. Tetrachloroethylene (otherwise known as perchloroethylene)   50 ppm
  69. Tetrahydrofuran   200 ppm
  70. 1,1,1-Trichloroethane   200 ppm
  71. Trichloroethylene   25 ppm
  72. Toluene   50 ppm
  73. Carbon disulfide   10 ppm
  74. n-Hexane   40 ppm
  75. 1-Butanol   25 ppm
  76. 2-Butanol   100 ppm
  77. Methanol   200 ppm
  78. Methyl isobutyl ketone   50 ppm
  79. Methyl ethyl ketone   200 ppm
  80. Methyl cyclohexanol   50 ppm
  81. Methyl cyclohexanone   50 ppm
  82. Methyl n-butyl ketone   5 ppm
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