Safety & Loss Prevention
Z-Table
University of Wisconsin System Administration
29 CFR Ch. XVII (7-1-92 Edition)
Table Z-1-A -- Limits for Air Contaminants
| TRANSITIONAL LIMITS | FINAL RULE LIMITS** | ||||||||||
| PEL* | TWA | STEL (c) | CEILING | ||||||||
| SUBSTANCE | CAS NO (f) | ppm(a) | mg/m3(b) | SKIN | ppm(a) | mg/m3(b) | ppm(a) | mg/m3(b) | ppm(a) | mg/m3(b) | SKIN |
| Acetaldehyde | 75-07-0 | 200 | 360 | 100 | 180 | 150 | 270 | ||||
| Acetic acid | 64-19-7 | 10 | 25 | 10 | 25 | ||||||
| Acetic anhydride | 108-24-7 | 5 | 20 | 5 | 20 | ||||||
| Acetone(h) | 67-64-1 | 1000 | 2400 | 750 | 1800 | 1000(h) | 2500(h) | ||||
| Acetonitrile | 75-05-8 | 40 | 70 | 40 | 70 | 60 | 105 | ||||
| 2-Acetylaminofluorine;see 1910.1014 | 53-96-3 | ||||||||||
| Acetylene dichloride;see 1,1-Dichloroethylene | |||||||||||
| Acetylene tetrabromide | 79-27-6 | 1 | 14 | 1 | 14 | ||||||
| Acetylsalicylic acid (Aspirin) | 50-78-2 | 5 | |||||||||
| Acrolein | 107-02-8 | 0.1 | 0.25 | 0.1 | 0.25 | 0.3 | 0.8 | ||||
| Acrylamide | 79-06-1 | 0.3 | X | 0.03 | X | ||||||
| Acrylic acid | 79-10-7 | 10 | 30 | X | |||||||
| Acrylonitrile;see 1910.1045 | 107-13-1 | ||||||||||
| Aldrin | 309-00-2 | 0.25 | X | 0.25 | X | ||||||
| Allyl alcohol | 107-18-6 | 2 | 5 | X | 2 | 5 | 4 | 10 | X | ||
| Allyl chloride | 107-05-1 | 1 | 3 | 1 | 3 | 2 | 6 | ||||
| Allyl glycidyl ether (AGE) | 106-92-3 | (C)10 | (C)45 | 5 | 22 | 10 | 44 | ||||
| Allyl propyl disulfide | 2179-59-1 | 2 | 12 | 2 | 12 | 3 | 18 | ||||
| alpha-Alumina | 1344-28-1 | ||||||||||
| Total dust | 15 | 10 | |||||||||
| Respirable fraction | 5 | 5 | |||||||||
| Aluminum (as Al) Metal | 7429-90-5 | ||||||||||
| Total dust | 15 | 15 | |||||||||
| Respirable fraction | 5 | 5 | |||||||||
| Pyro Powders | 5 | ||||||||||
| Welding Fumes*** | 5 | ||||||||||
| Soluble Salts | 2 | ||||||||||
| Alkyls | 2 | ||||||||||
| 4-Aminodiphenyl; see 1910.1011 | 92-67-1 | ||||||||||
| 2-Aminoethanol; see Ethanolamine | |||||||||||
| 2-Aminopyridine | 504-29-0 | 0.5 | 2 | 0.5 | 2 | ||||||
| Amitrole | 61-82-5 | 0.2 | |||||||||
| Ammonia | 7664-41-7 | 50 | 35 | 35 | 27 | ||||||
| Ammonium chloride fume | 12125-02-9 | 10 | 20 | ||||||||
| Ammonium sulfamate | 7773-06-0 | ||||||||||
| Total dust | 15 | 10 | |||||||||
| Respirable fraction | 5 | 5 | |||||||||
| n-Amyl acetate | 628-63-7 | 100 | 525 | 100 | 525 | ||||||
| sec-Amyl acetate | 626-38-0 | 125 | 650 | 125 | 650 | ||||||
| Aniline and homologs | 62-53-3 | 5 | 19 | X | 2 | 8 | X | ||||
| Anisidine (o-,p-isomers) | 29191-52-4 | 0.5 | X | 0.5 | X | ||||||
| Antimony and compounds (as Sb) | 7440-36-0 | 0.5 | 0.5 | ||||||||
| ANTU (alpha Naphthylthiourea) | 86-88-4 | 0.3 | 0.3 | ||||||||
| Arsenic, organic compounds (as As) | 7440-38-2 | 0.5 | 0.5 | ||||||||
| Arsenic, inorganic compounds (as As);see 1910.1018 | |||||||||||
| Arsine | 7784-42-1 | 0.05 | 0.2 | 0.05 | 0.2 | ||||||
| Asbestos;see 1910.1001 and 1910.1101 | Varies | ||||||||||
| Atrazine | 1912-24-9 | 5 | |||||||||
| Azinphos-metyl | 86-50-0 | 0.2 | X | 0.2 | X | ||||||
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