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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

P

Substance

TWA OEL-RL

Short Term OEL-RL

Notes
ppm mg/m3 ppm mg/m3
PCBs
   Chlorinated biphenyls (42%
   chlorine)
- 1 - 2 Sk
   Chlorinated biphenyls (54%
   chlorine)
- 0.5 - 1 Sk
Paraffin wax, fume - 2 - 6 -
Paraquat dichloride (ISO)
   respirable dust - 0.1 - - -
Parathion (ISO) - 0.1 - 0.3 Sk
Parathion-methyl (ISO) - 0.2 - 0.6 Sk
Pentacarbonyliron (as Fe) 0.01 0.08 - - -
Pentachlorophenol - 0.5 - 1.5 Sk
Pentaerythritol
   total inhalable dust - 10 - 20 -
   respirable dust - 5 - - -
Pentane, all isomers 600 1800 750 2250 -
Pentan-2-one 200 700 250 875 -
Pentan-3-one 200 700 250 875 -
Pentyl acetate 100 530 150 800 -
Perchloroethylene 50 335 150 1000 -
Perchloryl fluoride 3 14 6 28 -
Phenacyl chloride 0.05 0.3 - - -
Phenol 5 19 10 38 Sk
p-Phenylenediamine - 0.1 - - Sk
Phenyl-2,3-epoxypropyl ether 1 6 - - -
Phenylethylene 100 420 250 1050 -
Phenylhydrazine 5 20 10 45 Sk
2-Phenylpropene - - 100 480 -
Phorate (ISO) - 0.05 - 0.2 Sk
Phosdrin 0.01 0.1 0.03 0.3 Sk
Phosgene 0.1 0.4 - - -
Phosphine - - 0.3 0.4 -
Phosphorus, yellow - 0.1 - 0.3 -
Phosphorus pentachloride 0.1 1 - - -
Phosphorus pentasulphide - 1 - 3 -
Phosphorus trichloride 0.2 1.5 0.5 3 -
Phosporyl trichloride 0.2 1.2 0.6 3.6 -
Phthalic anhydride 1 6 4 24 Sen
Picloram (ISO) - 10 - 20 -
Picric acid - 0.1 - 0.3  Sk
Piperazine dihydrochloride - 5 - - -
Piperidine 1 3.5 - - Sk
Plaster of Paris
   total inhalable dust - 10 - - -
   respirable dust - 5 - - -
Platinum metal - 5 - - -
Platinum salts, soluble (as Pt) - 0.002 - - Sen
Polychlorinated biphenyls (PCBs) - See PCBs
Polyvinyl chloride (PVC)
   total inhalable dust - 10 - - -
   respirable dust - 5 - - -
Portland Cement
   total inhalable dust - 10 - - -
   respirable dust - 5 - - -
Potassium hydroxide - - - 2 -
Propane-1,2-diol
   total (vapour and particulates) 150 470 - - -
   particulates - 10 - - -
n-Propanol 200 500 250 625 Sk
Propan-1-ol 200 500 250 625 Sk
Propan-2-ol 400 980 500 1225 Sk
Propargyl alcohol 1 2 3 6 Sk
Propionic acid 10 30 15 45 -
Propoxur (ISO) - 0.5 - 2 -
n-Propyl acetate 200 840 250 1050 -
Propylene dinitrate 0.2 1.2 0.2 1.2 Sk
Propylene glycol
   total (vapour and particulates) 150 470 - - -
   particulates - 10 - - -
Propylene glycol dinitrate (PGDN) 0.2 1.2 0.2 1.2 Sk
Propylene glycol monomethyl ether 100 360 300 1080 Sk
Prop-2-yn-1-ol 1 2 3 6 Sk
Pulverised Fuel Ash
   total inhalable dust - 10 - - -
   respirable dust - 5 - - -
Pyrethrins (ISO) - 5 - 10 -
Pyridine 5 15 10 30 -
2-Pyridylamine 0.5 2 2 8 -
Pyrocatechol 5 20 - - -