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OEL-CL

OEL-RL:

A-B C-C D-D E-E F-L M-M N-O P-P Q-S T-T U-Z

DOL OEL-RL

C

Substance

TWA OEL-RL

Short Term OEL-RL

Notes
ppm mg/m3 ppm mg/m3
Caesium hydroxide - 2 - - -
Calcium carbonate
   total inhalable dust - 10 - - -
   respirable dust - 5 - - -
Calcium cyanamide - 0.5 - 1 -
Calcium hydroxide - 5 - - -
Calcium oxide - 2 - - -
Calcium silicate
   total inhalable dust - 10 - - -
   respirable dust - 5 - - -
Camphor, synthetic 2 12 3 18 -
e-Caprolactam
   dust - 1 - 3 -
   vapour 5 20 10 40 -
Captafol (ISO) - 0.1 - - Sk
Captan (ISO) - 5 - 15 -
Carbaryl (ISO) - 5 - 10 -
Carbuforan (ISO) - 0.1 - - -
Carbon black - 3.5 - 7 -
Carbon dioxide 5000 9000 15000 27000 -
Carbon monoxide 50 55 300 330 -
Carbon tetrabromide 0.1 1.4 0.3 4 -

Carbon tetrachloride

2 12.6 - - Sk
Carbonyl chloride - 0.4 - - Sk
Catechol 5 20 - - -
Cellulose
   total inhalable dust - 10 - 20 -
   respirable dust - 5 - - -
Cement
   total inhalable dust - 10 - - -
   respirable dust - 5 - - -
Chlordane (ISO) - 0.5 - 2 Sk
Chlorinated biphenyls (42% chlorine) - 1 - 2 Sk
Chlorinated biphenyls (54% chlorine) - 0.5 - 1 Sk
Chlorine 0.5 1.5 1 3 -
Chlorine dioxide 0.1 0.3 0.3 0.9 -
Chlorine trifluoride - - 0.1 0.4 -
Chloroacetaldehyde - - 1 3 -
2-Chloroacetophenone 0.05 0.3 - - -
Chloroacetyl chloride 0.05

0.2

- - -
Chlorobenzene 50 230 - - -
Chlorobromomethane 200 1050 250 1300 -
2-Chlorobuta-1,3-diene 10 36 - - Sk
Chlorodifluoromethane 1000 3500 - - -
1-Chloro-2,3-epoxy-propane 2 8 5 20 Sk
Chloroethane 1000 2600 1250 3250 -
2-Chloroethanol - - 1 3 Sk
Chloroethylene 7 - - - -
Chloroform 2 9.8 - - Sk
Chloromethane 50 105 100 210 -
1-Chloro-4-nitrobenzene - 1 - 2 Sk
Chloropentafluoroethane 1000 6320 - - -
Chloropicrin 0.1 0.7 0.3 2 -
beta-Chloroprene 10 36 - - Sk
3-Chloropropene 1 3 2 6 -
Chlorosulphonic acid - 1 - - -
alpha-Chlorotoluene 1 5 - - -
2-Chlorotoluene 50 250 - - -
2-Chloro-6-(trichloromethyl) pyridine - 10 - 20 -
Chlorpyrifos (ISO) - 0.2 - 0.6 Sk
Chromium -

0.5

- - -
   Chromium (II) compounds (as Cr) - 0.5 - - -
   Chromium (III) compounds (as Cr) - 0.5 - - -
Coal dust respirable dust - 2 - - -
Coal tar pitch volatiles (as cyclohexane solubles) - 0.14 - - -
Cobalt and compounds (as Co) - 0. 1 - - -
Copper
   fume - 0.2 - - -
   dusts and mists (as Cu) - 1 - 2 -
Cotton dust - See Annexure 4 - 0.5 - - -
Cresols, all isomers 22 - - Sk
Cristobalite, respirable dust - - - - -
Crotonaldehyde 18 -
Cryofluorane (INN) 1000   7000 1250  8750 -
Cumene 25  120  75  370  Sk
Cyanamide - 2 - - -
Cyanides, except hydrogen cyanide, cyanogen & cyanogen chloride, (as-CN) - 5 - - Sk
Cyanogen 10 20 - - -
Cyanogen chloride - - 0.3 0.6 -
Cychlohexane 100 340 300 1030 -
Cyclohexanol 50 200 - - -
Cyclohexanone 25 100 100 400 -
Cyclohexene 300 1015 - - -
Cyclohexylamine 10 40 - - Sk
Cyclonite (RDX) - 1.5 - 3 Sk
Cyhexatin (ISO) - - 10 -