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New York Codes Rules Regulations (Last Updated: March 27,2024) |
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TITLE 12. Department of Labor |
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Chapter I. Industrial Board of Appeals |
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Subchapter A. The Industrial Code |
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Part 12. Control of Air Contaminants |
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Subpart 12-3. Evidence of Dangerous Air Contaminants |
Sec. 12-3.1. General
Latest version.
- The existence of air contaminants consisting of or deriving from the substances named in the following tables in relative quantities greater than those set forth as to each substance shall constitute prima facie evidence that such contaminants are dangerous air contaminants, except when they exist only momentarily and infrequently. Prima facie evidence as to whether such contaminants in momentary and infrequent occurrences, or other air contaminants not named in the tables or lesser concentrations than those set forth in the following tables constitute dangerous air contaminants by reason of their existence in quantities tending to injure the health of employees shall include an opinion to that effect by a physician representing the industrial commissioner.Note:Petitions for variations pursuant to section 30 of the Labor Law from administrative orders issued on the basis of prima facie evidence of dangerous air contaminants will be decided by the board after review of reports of air tests and field investigations submitted to the board by the commissioner and a hearing which the petitioner will attend. The petitioner will be given opportunity to submit testimony, data and test results at the hearing to support his variation request.TABLE I—Threshold Limit Values (T.L.V.)(in alphabetical order)
Substance ppm(a) mg/M3(b) Abate*— 15 Acetaldehyde200 360 Acetic acid10 25 Acetic anhydride5 20 Acetone1,000 2,400 Acetonitrile40 70 Acetylene dichloride, see 1,2 Dicloroethylene Acetylene tetrabromide1 14 Acrolein0.1 0.25 Acrylamide–skin— 0.3 Acrylonitrile–skin20 45 Aldrin–skin— 0.25 Allyl alcohol–skin2 5 Allyl chloride1 3 C Allyl glycidyl ether (AGE)10 45 Allyl propyl disulfide2 12 2–Aminoethanol, see Ethanolamine 2–Aminopyridine0.5 2 Ammonia50 35 Ammonium sulfamate (Ammate)— 15 n–Amyl acetate100 525 sec–Amyl acetate125 650 Aniline–skin5 19 Anisidine (o,p–isomers)–skin— 0.5 Antimony & compounds (as Sb)— 0.5 ANTU (alpha naphthyl thiourea)— 0.3 Arsenic & compounds (as As)— 0.5 Arsine0.05 0.2 Azinphos–methyl–skin— 0.2 Barium (soluble compounds)— 0.5 C Benzene (benzol)–skin25 80 Benzidine–skin— A p–Benzoquinone, see Quinone Benzoyl peroxide— 5 Benzyl chloride1 5 Beryllium— 0.002 Biphenyl, see Diphenyl Boron oxide— 15 Boron tribromide*1 — C Boron trifluoride1 3 Bromine0.1 0.7 Bromine pentafluoride*0.1 — Bromoform–skin0.5 5 Butadiene (1, 3–butadiene)1,000 2,200 Butanethiol, see Butyl mercaptan 2–Butanone200 590 2–Butoxy ethanol (Butyl Cellosolve)–skin50 240 Butyl acetate (n–butyl acetate)150 710 sec–Butyl acetate200 950 tert–Butyl acetate200 950 Butyl alcohol100 300 sec–Butyl alcohol150 450 tert–Butyl alcohol100 300 C Butylamine–skin5 15 C tert–Butyl chromate (as CrO3)–skin— 0.1 n–Butyl glycidyl ether (BGE)50 270 Butyl mercaptan10 35 p–tert–Butyltoluene10 60 Cadmium (Metal dust and soluble salts)— 0.2 Cadmium oxide fume— 0.1 Calcium arsenate— 1 Calcium oxide— 5 Camphor*2 — Carbaryl (Sevin**)— 5 Carbon black— 3.5 Carbon dioxide5,000 9,000 Carbon disulfide–skin20 60 Carbon monoxide50 55 Carbon tetrachloride–skin10 65 Chlordane–skin— 0.5 Chlorinated camphene–skin— 0.5 Chlorinated diphenyl oxide— 0.5 Chlorine*1 — Chlorine dioxide0.1 0.3 C Chlorine trifluoride0.1 0.4 C Chloroacetaldehyde1 3 alpha–Chloroacetophenone (phenacylchloride)0.05 0.3 Chlorobenzene (monochlorobenzene)75 350 o–Chlorobenzylidene malononitrile (OCBM)0.05 0.4 Chlorobromomethane200 1,050 2–Chloro–1, 3 butadiene, see Chloroprene Chlorodiphenyl (42% Chlorine)–skin— 1 Chlorodiphenyl (54% Chlorine)–skin— 0.5 1, Chloro, 2, 3, epoxypropane, see Epichlorhydrin 2, Chloroethanol, see Ethylene chlorohydrin Chloroethylene, see Vinyl chloride C Chloroform (trichloromethane)50 240 1–Chloro–1–nitropropane20 100 Chloropicrin0.1 0.7 Chloroprene (2–chloro–1, 3–butadiene)–skin25 90 Chromic acid and chromates (as CrO3)— 0.1 Chromium, sol. chromic, chromous salts (as Cr)— 0.5 Metal and insoluble salts— 1 Coal tar pitch volatiles (benzene soluble fraction, anthracene, BaP, phenanthrene, acridine, chrysene, pyrene)— 0.2 Cobalt, metal fume and dust— 0.1 Copper fume— 0.1 Dusts and mists— 1 Cotton dust (raw)— 1 Crag** herbicide— 15 Cresol (all isomers)–skin5 22 Crotonaldehyde2 6 Cumene–skin50 245 Cyanide (as CN)–skin— 5 Cyanogen*10 — Cyclohexane300 1,050 Cyclohexanol50 200 Cyclohexanone50 200 Cyclohexene300 1,015 Cyclopentadiene75 200 2, 4–D— 10 DDT–skin— 1 DDVP–skin— 1 Decaborane–skin0.05 0.3 Demeton**–skin— 0.1 Diacetone alcohol (4–methyl–2–pentanone)50 240 1, 2 Diaminoethane, see Ethyllenediamine Diazomethane0.2 0.4 Diborane0.1 0.1 C 1, 2–Dibromoethane (ethylene dibromide)– skin25 190 Dibutyl phosphate1 5 Dibutylphthalate— 5 C o–Dichlorobenzene50 300 p–Dichlorobenzene75 450 Dichlorodifluoromethane1,000 4,950 1, 3–Dichloro–5, dimethyl hydantoin— 0.2 1, 1–Dichloroethane100 400 1, 2–Dichloroethane50 200 1, 2–Dichloroethylene200 790 C Dichloroethyl ether–skin15 90 Dichloromethane, see Methylenechloride Dichloromonofluoromethane1,000 4,200 C 1, 1–Dichloro–1–nitroethane10 60 1, 2–Dichloropropane, see Propylenedichloride Dichlorotetrafluoroethane1,000 7,000 Dieldrin–skin— 0.25 Diethylamine25 75 Diethylamino ethanol–skin10 50 C Diethylene triamine–skin10 — Diethylether, see Ethyl ether Difluorodibromomethane100 860 C Diglycidyl ether (DGE)5.5 2.8 Dihydroxybenzene, see Hydroquinone Diisobutyl ketone50 290 Diisopropylamine–skin5 20 Diphenyl amine*— 10 Dimethoxymethane, see Methylal Dimethyl acetamide–skin10 35 Dimethylamine10 18 Dimethylaminobenzene, see Xylidene Dimethylaniline (N–dimethylaniline)–skin5 25 Dimethylbenzene, see Xylene Dimethyl, 1, 2–dibromo–2, 2–dichloroethyl, (Dibrom)— 3 Dimethylformamide–skin10 30 2, 6 Dimethylheptanone, see Diisobutyl ketone 1, 1–Dimethylhydrazine–skin0.5 1 Dimethylphthalate— 5 Dimethylsulfate–skin1 5 Dinitrobenzene (all isomers)–skin— 1 Dinitro–o–cresol–skin— 0.2 Dinitrotoluene–skin— 1.5 Dioxane (Diethylene dioxide)–skin100 360 Diphenyl0.2 1 Diphenyl Amine*— 10 Diphenylmethane diisocyanate (see Methylene bisphenyl isocyanate) (MDI) Dipropylene glycol methyl ether–skin100 600 Di–sec, octyl phthalate (Di–2–ethylhexylphthalate)— 5 Endrin–skin— 0.1 Epichlorhydrin–skin5 19 EPN–skin— 0.5 1, 2–Epoxypropane, see Propyleneoxide 2, 3–Epoxy–1–propanol, see Glycidol Ethanethiol, see Ethylmercaptan Ethanolamine3 6 2 Ethoxyethanol–skin200 740 2 Ethoxyethylacetate (Cellosolve acetate)–skin100 540 Ethyl acetate400 1,400 Ethyl acrylate–skin25 100 Ethyl alcohol (ethanol)1,000 1,900 Ethylamine10 18 Ethyl sec–amyl ketone (5–methyl–3–heptanone)25 130 Ethyl benzene100 435 Ethyl bromide200 890 Ethyl butyl ketone (3–Heptanone)50 230 Ethyl chloride1,000 2,600 Ethyl ether400 1,200 Ethyl formate100 300 Ethyl mercaptan10 25 Ethyl silicate100 850 Ethylene chlorohydrin–skin5 16 Ethylenediamine10 25 Ethylene dibromide, see 1, 2–Dibromoethane Ethylene dichloride, see 1, 2–Dichloroethane C Ethylene glycol dinitrate and/or Nitrogylcerin– skin0.2(d) 1 Ethylene glycol monomethyl ether acetate, see Methyl cellosolve acetate Ethylene imine–skin0.5 1 Ethylene oxide50 90 Ethylidine chloride, see 1, 1–Dichloroethane N–Ethylmorpholine–skin20 94 Ferbam— 15 Ferrovanadium dust— 1 Fluoride (as F)— 2.5 Fluorine0.1 0.2 Fluorotrichloromethane1,000 5,600 C Formaldehyde5 6 Formic acid5 9 Furfural–skin5 20 Furfuryl alcohol50 200 Gasoline— A Gylcidol (2, 3–Epoxy–1–propanol)50 150 Gylcol monoethyl ether, see 2–Ethoxyethanol Guthion**, see Azinphosmethyl Hafnium— 0.5 Heptachlor–skin— 0.5 Heptane (n–heptane)500 2,000 Hexachloroethane–skin1 10 Hexachloronaphthalene–skin— 0.2 Hexane (n–hexane)500 1,800 2–Hexanone100 410 Hexone100 410 sec–Hexyl acetate50 300 Hydrazine–skin1 1.3 Hydrogen bromide3 10 C Hydrogen chloride5 7 Hydrogen cyanide–skin10 11 Hydrogen fluoride3 2 Hydrogen peroxide, 90%1 1.4 Hydrogen selenide0.05 0.2 Hydrogen sulfide10 15 Hydroquinone— 2 Indium and compounds (as In)*— 0.1 C Iodine0.1 1 Iron oxide fume— 10 Iron salts, soluble (as Fe)*— 1 Isoamyl acetate100 525 Isoamyl alcohol100 360 Isobutyl acetate150 700 Isobutyl alcohol100 300 Isophorone25 140 Isopropyl acetate250 950 Isopropyl alcohol400 980 Isopropylamine5 12 Isopropylether500 2,100 Isopropyl glycidyl ether (IGE)50 240 Ketone0.5 0.9 Lead— 0.2 Lead arsenate— 0.15 Lindane–skin— 0.5 Lithium hydride— 0.025 L.P.G. (Liquified petroleum gas)1,000 1,800 Magnesium oxide fume— 15 Malathion–skin— 15 Maleic anhydride0.25 1 C Manganese— 5 Mercury–skin— 0.1 Mercury (organic compounds)–skin— 0.01 Mesityl oxide25 100 Methanethiol, see Methyl mercaptan Methoxychlor— 15 2–Methoxyethanol, see Methyl cellosolve Methyl acetate200 610 Methyl acetylene (propyne)1,000 1,650 Methyl acetylene–propadiene mixture (MAPP)1,000 1,800 Methyl acrylate–skin10 35 Methylal (dimethoxymethane)1,000 3,100 Methyl alcohol (methanol)200 260 Methylamine10 12 Methyl amyl alcohol, see Methyl isobutyl carbinol Methyl (n–amyl) ketone (2–Heptanone)100 465 C Methyl bromide–skin20 80 Methyl butyl ketone, see 2–Hexanone Methyl cellosolve–skin25 80 Methyl cellosolve acetate–skin25 120 C Methyl chloride100 210 Methyl chloroform350 1,900 Methylcyclohexane500 2,000 Methylcyclohexanol100 470 o–Methylcyclohexanone–skin100 460 Methyl ethyl ketone (MEK), see 2–Butanone Methyl formate100 250 Methyl iodide–skin5 28 Methyl isobutyl carbinol–skin25 100 Methyl isobutyl ketone, see Hexone Methyl isocyanate–skin0.22 0.05 C Methyl mercaptan10 20 Methyl methacrylate100 410 Methyl propyl ketone, see 2–Pentanone C Methyl silicate*5 — C alpha–Methyl styrene100 480 C Methylene bisphenyl isocyanate (MDI)0.02 0.2 Methylene chloride (dichloromethane)500 1,740 Molybdenum (soluble compounds)— 5 (insoluble compounds)— 15 Monomethyl aniline–skin2 9 C Monomethyl hydrazine–skin0.2 0.35 Morpholine–skin20 70 Naphtha (coal tar)100 400 Naphthalene10 50 beta–Naphthylamine— A Nickel carbonyl0.001 0.007 Nickel, metal and soluble compounds— 1 Nicotine–skin— 0.5 Nitric acid2 5 Nitric oxide25 30 p–Nitroaniline–skin1 6 Nitrobenzene–skin1 5 p–Nitrochloro–benzene–skin— 1 Nitroethane100 310 C Nitrogen dioxide5 9 Nitrogen Trifluoride10 29 C Nitroglycerin–skin0.2 2 Nitromethane100 250 1–Nitropropane25 90 2–Nitropropane25 90 N–Nitrosodimethyl–amine (Dimethyl–nitrosoamine)–skin— A Nitrotoluene–skin5 30 Nitrotrichloromethane, see Chloropicrin Octachloronaphthalene–skin— 0.1 Octane500 2,350 Oil mist (mineral)— 5 Osmium tetroxide— 0.002 Oxalic acid— 1 Oxygen difluoride0.05 0.1 Ozone0.1 0.2 Paraquat–skin— 0.5 Parathion–skin— 0.1 Pentaborane0.005 0.01 Pentachloronaphthalene–skin— 0.5 Pentachlorophenol–skin— 0.5 Pentane1,000 2,950 2–Pentanone200 700 Perchloroethylene100 670 Perchloromethyl mercaptan0.1 0.8 Perchloryl fluoride3 13.5 Petroleum Distillates (naphtha)500 2,000 Phenol–skin5 19 p–Phenylene diamine–skin— 0.1 Phenyl ether (vapor)1 7 Phenyl ether–Biphenyl mixture (vapor)1 7 Phenylethylene, see Styrene Phenyl glycidyl ether (PGE)10 60 Phenylhydrazine–skin5 22 Phosdrln (Mevinphos**)–skin— 0.1 Phosgene (carbonyl chloride)0.1 0.4 Phosphine0.3 0.4 Phosphoric acid— 1 Phosphorus (yellow)— 0.1 Phosphorus pentachloride— 1 Phosphorus pentasulfide— 1 Phosphorus trichloride0.5 3 Phthalic anhydride2 12 Picric acid–skin— 0.1 Pival** (2–Pivalyl–1, 3–indandione)— 0.1 Platinum (soluble salts)— 0.002 Polytetrafluoroethylene decomposition products— A Propane1,000 1,800 beta–Propiolactone— A Propargyl alcohol–skin*1 — n–Propyl acetate200 840 Propyl alcohol200 500 n–Propyl nitrate25 110 Propylene dichloride75 350 Propylene imine–skin2 5 Propylene oxide100 240 Propyne, see Methylacetylene Pyrethrum— 5 Pyridine5 15 Quinone0.1 0.4 RDX–skin*— 1.5 Rhodium, Metal fume and dusts— 0.1 Soluble salts— 0.001 Ronnel— 15 Rotenone (commercial)— 5 Selenium compounds (as Se)— 0.2 Selenium hexafluoride0.05 0.4 Silver, Metal and soluble compounds— 0.01 Sodium fluoroacetate (1080)–skin— 0.05 Sodium hydroxide— 2 Stibine0.1 0.5 Stoddard solvent500 2,900 Strychnine— 0.15 C Styrene monomer (phenylethylene)100 420 Sulfur dioxide5 13 Sulfur hexafluoride1,000 6,000 Sulfuric acid— 1 Sulfur monochloride1 6 Sulfur pentafluoride0.025 0.25 Sulfuryl fluoride5 20 Systox, see Demeton** 2, 4, 5, T— 10 Tantalum— 5 TEDP–skin— 0.2 Teflon** decomposition products— A Tellurium— 0.1 Tellurium hexafluoride0.02 0.2 TEPP–skin— 0.05 C Terphenyls1 9 1, 1, 1, 2–Tetrachloro–2, 2–difluoroethane500 4,170 1, 1, 2, 2–Tetrachloro–1, 2–difluoroethane500 4,170 1, 1, 2, 2–Tetrachloroethane–skin5 35 Tetrachloroethylene, see Perchloroethylene Tetrachloromethane, see Carbon tetrachloride Tetrachloronaphthalene–skin— 2 Tetraethyl lead (as Pb)–skin— 0.075 Tetrahydrofuran200 590 Tetramethyl lead (TML) (as Pb)–skin— 0.075 Tetramethyl succinonitrile–skin0.5 3 Tetranitromethane1 8 Tetryl (2, 4, 6–trinitrophenylmethylnitramine)–skin— 1.5 Thallium (soluble compounds)–skin— 0.1 Thiram— 5 Tin (inorganic compounds, except SnH4and SnO2)— 2 Tin (organic compounds)— 0.1 Titanium dioxide— 15 Toluene (toluol)200 750 C Toluene–2, 4–diisocyanate0.02 0.14 o–Toluidine–skin5 22 Toxaphene, see Chlorinated camphene Tributyl phosphate— 5 1, 1, 1–Trichloroethane, see Methyl chloroform 1, 1, 2–Trichloroethane–skin10 45 Trichloroethylene100 535 Trichloromethane, see Chloroform Trichloronaphthalene–skin— 5 1, 2, 3–Trichloropropane50 300 1, 1, 2–Trichloro 1, 2, 2–trifluoroethane1,000 7,600 Triethylamine25 100 Trifluoromonobromomethane1,000 6,100 2, 4, 6–Trinitrophenol, see Picric acid 2, 4, 6–Trinitrophenylmethylnitramine, see Tetryl Trinitrotoluene–skin— 1.5 Triorthocresyl phosphate— 0.1 Triphenyl phosphate— 3 Tungsten and compounds, as W soluble*— 1 Insoluble— 5 Turpentine100 560 Uranium (natural), soluble and insoluble compounds, (as U)*— 0.2 C Vanadium (V2O5dust)— 0.5 (V2O5fume)— 0.1 Vinyl benzene, see Styrene C Vinyl chloride500 1,300 Vinylcyanide, see Acrylonitrile Vinyl toluene100 480 Warfarin— 0.1 Xylene (xylol)100 435 Xylidine–skin5 25 Yttrium— 1 Zinc chloride fume— 1 Zinc oxide fume— 5 Zirconium compounds (as Zr)— 5 ____(a) Parts of vapor or gas per million parts of contaminated air by volume at 25 degrees Centigrade and 760 mm. Hg pressure.(b) Approximate milligrams of particulate per cubic meter of air.(d) An atmospheric concentration of not more than 0.02 ppm, or personal protection may be necessary to avoid headache.* 1969 addition.** Registered trade name.A No exposure or contact permitted by any route (respiratory, oral or skin).C Ceiling limit which shall not be exceeded even momentarily or infrequently.A No exposure or contact permitted by any route (respiratory, oral or skin).A No TLV recommended pending termination of toxicity or products, but air concentrations should be minimal.TABLE II—Mineral DustsSubstance Million Particles Per Cubic Foot* Asbestos5 Dust (nuisance, no free silica)50 Graphite (natural)15 Mica (below 1% free silica)20 Portland cement50 Silica— Class I**50 Class II**20 Class III**10 Class IV**5 Slate (below 1% free silica)50 Soapstone (below 1% free silica)20 Talc (below 1% free silica)20 Tremolite5 Total dust (below 1% free silica)50 ____* Using the light field low–power method of counting as described in the U.S. Public Health Report 47 No. 12, March 12, 1932, pp. 669-672 or its equivalent and a standard type impinger or other equivalent instrument for taking atmospheric dust samples.** Class I rock. Any rock formation uniformly containing up to and including 5%, by weight, of free silicon dioxide.** Class II rock. Any rock formation uniformly containing more than 5%, up to and including 10%, by weight, of free silicon dioxide.** Class III rock. Any rock formation uniformly containing more than 10%, up to and including 40%, by weight, of free silicon dioxide.** Class IV rock. Any rock formation containing more than 40%, by weight, of free silicon dioxide.