Document e7QY3z2mqk81XOga9wLwbrqD9

A - *" ' if' TLVs^^A1- Threshold Limit Values for Chemical Substances and Physical Agents in the Work Environment with Intended Changes for 1983-84 t < \ m. ++ ' -4*"^ - -**`*e- ISBN: 0-936712-45-7 tow Substance TWA STiL (CAS#) ppm"' mp/m3'" ppnr mp/m3"' Phenythydrazine (100-63-01 -- Skin...... tPropylene glycol dinitrate (6423-43-4) -Skin.... Rhodium, Insoluble compounds, as Rh....... Soluble compounds, as Rh ............................ Sulprofos (35400-43-2).... O-Toluidine 195-534) -- Skin........................ Trichloroethylene (79-01-61 Vinylidene chloride [ 75-35-4J.................... 5, A2 0.05 -- 2. A2 50 5 20. A2 10, A2 0.3 _ 1 0 01 1 9. A2 270 _ -- _ 200 20 20 45, A2 _ _ _ -- _. 1,060 80 Capita* tetters A, B, 0 & E refer to Appendices; C denotes ceiknp limit t1963 Revision or Addition NOTICE OF INTENDED CHANGES MINERAL DUSTS Substance SILICA, SiOi TLV Crystalline Quartz....................0 1 mg/m3. Respirable dust 114808-60-7] 0.3 mg/m3, Total dust Cristobalite........... 0.05 mg/m3. Respirable dust 114464*46-1) 0 15 mg/m3. Total dust Tridymite........ ...... 0.05 mg/m3, Respirable dust 115468-32-3) 0 15 mg/m3, Total dust Silica, fused............Use quartz values. 160676-86-0) Tripoli....................Use respirable quartz value. 11317-95-9] Silica, amorphous.. 5 mg/m3. Respirable dust 17631 -86-9] 10 mg/m3, Total dust SILICATES (< 1% quartz) Diatomaceous earth 5 mg/m3, Respirable dust (uncalcined) 10 mg/m3, Total dust [60676-86-0) Graphite (natural)...2.5 mg/m3, Respirable dust 17782-42-5] 5 mg/m3, Total dust 40 91 Mica 112001-26-2] .3 mg/m3, Respirable dust 6 mg/m3, Total dust Perlite..................... 5 mg/m3. Respirable dust 10 mg/m3, Total dust Portland Cement. .. 5 mg/m3, Respirable dust 10 mg/m3, Total dust Precipitated silica 5 mg/m3, Respirable dust and silica gel......10 mg/m3, Total dust Soapstone..............3 mg/m3, Respirable dust 6 mg/m3, Total dust Talc (containing Use asbestos TLV However, asbestos fibers)..should not exceed 2 mg/m3 respirable dust. COAL DUST If > 5% quartz, use respirable quartz value. Generic Listing All mppcf values for mineral dusts will be eliminated in favor of equivalent respirable mass or total mass values, l.e., Appendix F. Footnote j) Containing < 1% quartz; if quartz content > 1%, use quartz values. ay Carclnonens The Committee lists below those substances in in* dusjriql USB that hay pmwn in mon nf have induced cancer in animals under appropriate ex* Artiflifienwl Conditions. Present listing of those sub stances efircinogenic t6r man takes two forms: Those for which a TLV has been assigned (la) and those for which environmental conditions have not been suffi ciently defined to assign a TLV (lb). Ala, Human Carcinogens - Substances, or substances ASSBciaieO Vytp Indusmai processes rnorjin- flized-to have carcinogenic or.cocarcinooenic potential, with an assigned TlV: TLV ** Acrylonitrile -- Skin..... Asbestos Amos ife..................... Chrysofile....... ........... Crocidolite................. Other forms.............. 2 ppm 0.5 fiber > 5fim/cc 2 fibers > Sjem/cc 0.2 fiber > 5^m/ec 2 fibers > 5rim/cc "Set Notn* of Intended Changes. 41 i ter JUL 2-1984 SL 071293 bis (Chtoromethyl) ether 0.001 ppm Chromite ore processing (chromate)............... 0.05 mg/m3, as Cr Chromium (VI), certain water insoluble compounds............... 0.05 mg/m3, as Cr Coal tar pitch volatiles.. 0 2 mg/m3, as benzene solubles Nickel sulfide roasting, fume & dust.............. 1.0 mg/m3, as Ni Vinyl chloride................ * Alb. Human Carcinogens Substances, or sub stances associated with industrial processes, , i recognized to have carcinogenic potential with out an assigned TtV. 4-Aminodiphenyl (p-Xenylamine) -- Skin Benzidine -- Skin 0-Naphthylamine 4-Nitrodiphenyl For the substances in 1b. no exposure or con tact by any route -- respiratory, skin or oral, as detected by the most sensitive methods--shall be permitted. The worker should be properly equipped to insure virtually no contact with the carcinogen. -M A2. Industrial Substances Suspect of Carcinogenic Potential tor MAN- Chemical substances or sub stances associated with industrial processes, which are suspect of inducing cancer, based on either (1) limited epidemiologic evidence, exclu sive of clinical reports of single cases, or (2) demonstration of carcinogenesis in one or more animal species by appropriate methods. Acrylonitrile -- Skin 2 ppm Amitrol ------ Antimony trioxide production*------ Arsenic trioxide production ------ Benzene 10 ppm Benzo(a)pyrene ------- 1 , Beryllium On 2 0#ig/m3 `Cigarette smoking can antianca tha incxlanca of respiratory cancers from this or others of these substances or processes 42 mm cou__ 11,3-Butadiene Cadmium oxide production Carbon tetrachloride -- Skin Chloroform $ Chtoromethyl methyl ether Chromates of lead and zinc, as Cr Chrysene 3, 3'-Dich!orobenzidine -- Skin Dimethylcarbamyl chlonde 1, 1-Dimethyl hydrazine -- Skin Dimethyl sulfate -- Skin Ethylene dibromide -- Skin Ethylene oxide t Formaldehyde Hexachlorobutadiene Hexamethyl phosphoramide -- Skin Hydrazine -- Skin 4, 4-Methylene bis (2-chloroaniline) -- Skin Methyl hydrazine -- Skin Methyl iodide -- Skin 2-Nitropropane N-Nitrosodimethylamine -- Skin N-Phenyl-beta-naphthylamine Phenylhydrazine -- Skin Propane sultone beta-Propiolactone fPropyleneimine -- Skin o-Totidine o-Toluidine -- Skin Vinyl bromide Vinyl cyclohexene dioxide 5 ppm 10 ppm 0.05 mg/m3 0.5 ppm 0.1 ppm 1 ppm 1 ppm 0.02 ppm 0.1 ppm 0.02 ppm C 0.2 ppm 2 ppm 10 ppm 5 ppm 0.5 ppm 2 ppm 2 ppm 5 ppm 10 ppm For the above, worker exposure by all routes should be carefully controlled to levels consis tent with the animal and human experience data (see Documentation), including those sub stances with a listed TLV 11983 Addition ft 983 Adoption. 43 SL 071294