Except where exempt under division (F)(4) of section 3704.03 of the Revised Code, the director may require a permit-to-install, issued in accordance with Chapter 3745-31 of the Administrative Code, for any new or modified air contaminant sources that emit a toxic air contaminant that presents, or may present, through inhalation or other routes of exposure, a threat of adverse human health effects, including, but not limited to, substances that are known to be, or may reasonably be anticipated to be, carcinogenic, mutagenic, teratogenic, or neurotoxic, that cause reproductive dysfunction, or that are acutely or chronically toxic, or a threat of adverse environmental effects whether through ambient concentrations, bioaccumulation, deposition, or otherwise, and that is identified in this rule.
| Toxic air contaminant | CAS Number |
| acetaldehyde | 00075-07-0 |
| acetamide | 00060-35-5 |
| acetonitrile | 00075-05-8 |
| acetophenone | 00098-86-2 |
| acetylaminofluorene, 2- | 00053-96-3 |
| acetylene tetrabromide | 00079-27-6 |
| acrolein | 00107-02-8 |
| acrylamide | 00079-06-1 |
| acrylic acid | 00079-10-7 |
| acrylonitrile | 00107-13-1 |
| aldrin | 00309-00-2 |
| allyl chloride | 00107-05-1 |
| allylamine | 00107-11-9 |
| aluminum & compounds, as Al; Metal dust; Pyro powders Soluble salts; Alkyls (NOS) | 07429-90-5 |
| aluminum oxide | 01344-28-1 |
| aminodiphenyl, 4- | 00092-67-1 |
| aminopyridine, 2- | 00504-29-0 |
| amitrole | 00061-82-5 |
| ammonia (anhydrous) | 07664-41-7 |
| ammonium perfluorooctanoate | 03825-26-1 |
| aniline | 00062-53-3 |
| anisidine, ortho- | 00090-04-0 |
| anisidine, para- | 00104-94-9 |
| antimony compounds, as Sb | 07440-36-0 |
| antimony hydride | 07803-52-3 |
| antimony trioxide | 01309-64-4 |
| arsenic compounds, as As | 07440-38-2 |
| arsine | 07784-42-1 |
| atrazine | 01912-24-9 |
| azinphos-methyl | 00086-50-0 |
| barium & compounds, as Ba | 07440-39-3 |
| benzene | 00071-43-2 |
| benzidine (& dyes metabolized to benzidine) | 00092-87-5 |
| benzotrichloride | 00098-07-7 |
| benzoyl chloride | 00098-88-4 |
| benzyl chloride | 00100-44-7 |
| beryllium compounds, as Be | 07440-41-7 |
| biphenyl, 1,1- | 00092-52-4 |
| bis(chloromethyl)ether (BCME) | 00542-88-1 |
| bromine | 07726-95-6 |
| bromine pentafluoride | 07789-30-2 |
| bromoform | 00075-25-2 |
| bromopropane,1- | 00106-94-5 |
| butadiene, 1,3- | 00106-99-0 |
| butyl acrylate, n- | 00141-32-2 |
| butyl mercaptan, n- | 00109-79-5 |
| butyl toluene, p-tert- | 00098-51-1 |
| cadmium compounds, as Cd | 07440-43-9 |
| calcium cyanamide | 00156-62-7 |
| captan | 00133-06-2 |
| carbaryl | 00063-25-2 |
| carbon disulfide | 00075-15-0 |
| carbon tetrabromide | 00558-13-4 |
| carbon tetrachloride | 00056-23-5 |
| carbonyl fluoride | 00353-50-4 |
| carbonyl sulfide | 00463-58-1 |
| catechol | 00120-80-9 |
| chloramben | 00133-90-4 |
| chlordane | 00057-74-9 |
| chlorine | 07782-50-5 |
| chlorine dioxide | 10049-04-4 |
| chlorine triflouride | 07790-91-2 |
| chloroacetic acid | 00079-11-8 |
| chloroacetophenone, 2- | 00532-27-4 |
| chlorobenzene | 00108-90-7 |
| chlorobenzilate | 00510-15-6 |
| chloroform | 00067-66-3 |
| chloromethyl methyl ether | 00107-30-2 |
| chloroprene, beta- | 00126-99-8 |
| chromium and inorganic compounds, as Cr; metal and Cr III compounds; water-soluble Cr VI compounds; insoluble Cr VI compounds | 07440-47-3 |
| cobalt (& cobalt compounds), as Co | 07440-48-4 |
| coke oven emissions | * |
| copper fume; dusts and mists, as Cu | 07440-50-8 |
| cresol meta- | 00108-39-4 |
| cresol ortha- | 00095-48-7 |
| cresol para- | 00106-44-5 |
| cresols / cresylic acid, all isomers | 01319-77-3 |
| cumene | 00098-82-8 |
| cyanides, free (IRIS) & compounds (HAP) | 00057-12-5 |
| cyanogen | 00460-19-5 |
| cyanogen chloride | 00506-77-4 |
| cyclohexane | 00110-82-7 |
| cyclonite | 00121-82-4 |
| D 2,4-, salts and esters | 00094-75-7 |
| DDE | 03547-04-4 |
| decaborane | 17702-41-9 |
| Di (2-ethylhexyl) phthalate (DEHP) | 00117-81-7 |
| diazomethane | 00334-88-3 |
| diborane | 19287-45-7 |
| dibromo-3-chloropropane, 1,2- (DBCP) | 00096-12-8 |
| dibutyl phenyl phosphate | 02528-36-1 |
| dibutyl phthalate | 00084-74-2 |
| dichloro-2-butene, 1,4- | 00764-41-0 |
| dichloroacetylene | 07572-29-4 |
| dichlorobenzene (para), 1,4- | 00106-46-7 |
| dichlorobenzene, 1,2- (o-dichlorobenzene) | 00095-50-1 |
| dichlorobenzidine, 3,3'- | 00091-94-1 |
| dichlorodiphenyl trichloroethane, p,p'- (DDT) | 00050-29-3 |
| dichloroethane, 1,1- | 00075-34-3 |
| dichloroethyl ether | 00111-44-4 |
| dichloromethane (methylene chloride) | 00075-09-2 |
| dichloropropene, 1,3- (technical grade) | 00542-75-6 |
| dichlorvos (DDVP) | 00062-73-7 |
| dieldrin | 00060-57-1 |
| diethanolamine | 00111-42-2 |
| diethyl aniline n,n- | 00091-66-7 |
| diethyl sulfate | 00064-67-5 |
| diethylene triamine | 00111-40-0 |
| dimethoxybenzidine, 3,3- (dianisidine, ortho-) | 00119-90-4 |
| dimethyl aminoazobenzene, 4- (or para-) | 00060-11-7 |
| dimethyl benzidine, 3,3'- | 00119-93-7 |
| dimethyl carbamoyl chloride | 00079-44-7 |
| dimethyl sulfate | 00077-78-1 |
| dimethylaniline (N,N-dimethylaniline) | 00121-69-7 |
| dimethylformamide, n,n- | 00068-12-2 |
| dimethylhydrazine, 1,1- | 00057-14-7 |
| dimethylphthalate | 00131-11-3 |
| dinitrobenzene | 25154-54-5 |
| dinitrobenzene, 1,4-p | 00100-25-4 |
| dinitrobenzene, 1,3-m | 00099-65-0 |
| dinitrobenzene, 1,2-o | 00528-29-0 |
| dinitro-o-cresol, 4,6-, & salts | 00534-52-1 |
| dinitrophenol, 2,4- | 00051-28-5 |
| dinitrotoluene, 2,4- | 00121-14-2 |
| dioxane 1,4- (1,4-diethyleneoxide) | 00123-91-1 |
| dioxathion | 00078-34-2 |
| dioxolane, 1,3- | 00646-06-0 |
| diphenylamine | 00122-39-4 |
| diphenylhydrazine, 1,2- | 00122-66-7 |
| epichlorohydrin | 00106-89-8 |
| ethyl acrylate | 00140-88-5 |
| ethyl benzene | 00100-41-4 |
| ethyl carbamate (urethane) | 00051-79-6 |
| ethyl chloride (chloroethane) | 00075-00-3 |
| ethyl mercaptan | 00075-08-1 |
| ethylene chlorohydrin | 00107-07-3 |
| ethylene dibromide | 00106-93-4 |
| ethylene dichloride (dichloroethane, 1,2-) | 00107-06-2 |
| ethylene glycol | 00107-21-1 |
| ethylene imine (aziridine) | 00151-56-4 |
| ethylene oxide | 00075-21-8 |
| ethylene thiourea | 00096-45-7 |
| ethylidene dichloride (1,1-dichloroethane) | 00075-34-3 |
| fluorine | 07782-41-4 |
| formaldehyde (gas) | 00050-00-0 |
| formic acid | 00064-18-6 |
| glycol ethers | * |
| glyoxal | 00107-22-2 |
| heptachlor | 00076-44-8 |
| heptachlor epoxide | 01024-57-3 |
| hexachlorobenzene (HCB) | 00118-74-1 |
| hexachlorobutadiene | 00087-86-3 |
| hexachlorocyclopentadiene | 00077-47-4 |
| hexachloroethane | 00067-72-1 |
| hexachloronaphthalene | 01335-87-1 |
| hexafluoroacetone | 00684-16-2 |
| hexamethyl phosphoramide | 00680-31-9 |
| hexamethylene diisocyanate | 00822-06-0 |
| hexane, n- | 00110-54-3 |
| hexylene glycol | 00107-41-5 |
| hydrazine | 00302-01-2 |
| hydrogen chloride | 07647-01-0 |
| hydrogen cyanide salts, as CN | 00592-01-8 |
| hydrogen cyanide, as CN (hydrocyanic acid) | 00074-90-8 |
| hydrogen fluoride, as F | 07664-39-3 |
| hydrogen selenide | 07783-07-5 |
| hydrogen sulfide | 07783-06-4 |
| hydroquinone | 00123-31-9 |
| hydroxypropyl acrylate, 2- | 00999-61-1 |
| indene | 00095-13-6 |
| indium & compounds, as In | 07440-74-6 |
| isophorone | 00078-59-1 |
| isophorone diisocyanate | 04098-71-9 |
| isopropoxyethanol, 2- | 00109-59-1 |
| isopropylamine | 00075-31-0 |
| isopropylaniline, N- | 00768-52-5 |
| ketene | 00463-51-4 |
| lead & inorganic compounds, as Pb | 07439-92-1 |
| lindane (all isomers) | 00058-89-9 |
| lithium hydride | 07580-67-8 |
| maleic anhydride | 00108-31-6 |
| manganese & inorganic compounds, as Mn | 07439-96-5 |
| malathion | 00121-75-5 |
| mercury; Alkyl compounds; Aryl compounds; elemental & inorganic forms, as Hg | 07439-97-6 |
| methanol | 0067-56-1 |
| methoxychlor | 00072-43-5 |
| methyl aniline, N- | 00100-61-8 |
| methyl bromide | 00074-83-9 |
| methyl chloride | 00074-87-3 |
| methyl chloroform | 00071-55-6 |
| methyl hydrazine | 00060-34-4 |
| methyl iodide (iodomethane) | 00074-88-4 |
| methyl isobutyl ketone (MIBK) | 00108-10-1 |
| methyl isocyanate | 00624-83-9 |
| methyl isopropyl ketone | 00563-80-4 |
| methyl mercaptan | 00074-93-1 |
| methyl methacrylate | 00080-62-6 |
| methyl styrene, alpha- | 00098-83-9 |
| methyl tert-butyl ether (MTBE) | 01634-04-4 |
| methyl vinyl ketone | 00078-94-4 |
| methylamine | 00074-89-5 |
| methylene bis(2-chloroaniline), 4,4- (MBOCA; MOCA) | 00101-14-4 |
| methylene dianiline, 4,4- | 00101-77-9 |
| methylene diphenyl diisocyanate (monomeric MDI) | 00101-68-8 |
| mineral fibers, fine | * |
| Mirex | 02385-85-5 |
| molybdenum, as Mo; soluble compounds, metals and insouble compounds | 07439-98-7 |
| naphthalene | 00091-20-3 |
| naphthylamine, 2- or B- | 00091-59-8 |
| nickel carbonyl | 13463-39-3 |
| nickel, as Ni; elemental; soluble inorganic compounds; insoluble inorganic compounds (NOS); nickel subsulfide, as Ni | 07440-02-0 |
| nitric acid | 07697-37-2 |
| nitroaniline, para- | 00100-01-6 |
| nitrobenzene | 00098-95-3 |
| nitrodiphenyl, 4- | 00092-93-3 |
| nitrophenol, 4- | 00100-02-7 |
| nitropropane, 2- | 00079-46-9 |
| nitrosodimethylamine, n- | 00062-75-9 |
| nitrosomorpholine, n- | 00059-89-2 |
| nitroso-n-methylurea, n- | 00684-93-5 |
| octachlorostyrene | 29082-74-4 |
| osmium tetroxide | 20816-12-0 |
| parathion | 00056-38-2 |
| pentaborane | 19624-22-7 |
| pentachloronapthalene | 01321-64-8 |
| pentachloronitrobenzene | 00082-68-8 |
| pentachlorophenol | 00087-86-5 |
| pentyl acetate, all isomers | 00620-11-1 |
| perchloromethyl mercaptan | 00594-42-3 |
| perchloryl fluoride | 07616-94-6 |
| phenol | 00108-95-2 |
| phenylenediamine, para- | 00106-50-3 |
| phenylhydrazine | 00100-63-0 |
| phenylphosphine | 00638-21-1 |
| phosgene | 00075-44-5 |
| phosphine | 07803-51-2 |
| phosphoric acid | 07664-38-2 |
| phosphorus | 07723-14-0 |
| phosphorus oxychloride | 10025-87-3 |
| phosphorus trichloride | 07719-12-2 |
| phosphorus pentachloride | 10026-13-8 |
| phosphorus pentasulfide | 01314-80-3 |
| phthalic anhydride | 00085-44-9 |
| platinum metal and soluble salts, as Pt | 07440-06-4 |
| polychlorinated biphenyls (PCBs, arcolors) | 01336-36-3 |
| polychlorinated dibenzofurans (furans) | 00132-64-9 |
| polycyclic organic matter (POM) | * |
| polymeric methylene diphenyl diisocyanate (PMDI) | 09016-87-9 |
| propane sultone, 1,3- | 01120-71-4 |
| propionlactone, beta- | 00057-57-8 |
| propionaldhyde | 00123-38-6 |
| propoxur | 00114-26-1 |
| propylene dichloride | 00078-87-5 |
| propylene glycol dinitrate | 06423-43-4 |
| propylene oxide | 00075-56-9 |
| propylenimine (methyl aziridine, 2-) | 00075-55-8 |
| quinoline | 00091-22-5 |
| quinone | 00106-51-4 |
| radionuclides | * |
| selenium & compounds, as Se | 7782-49-2 |
| selenium hexafluoride | 07783-79-1 |
| silver metal and soluble compounds, as Ag | 07440-22-4 |
| sodium hydroxide | 01310-73-2 |
| stoddard solvent | 08052-41-3 |
| styrene oxide | 00096-09-3 |
| styrene, monomer | 00100-42-5 |
| subsilisins | 09014-01-1 |
| sulfur tetrafluoride | 07783-60-0 |
| sulfuric acid | 07664-93-9 |
| tellurium hexafluoride | 07783-80-4 |
| tetrachlorodibenzo-p-dioxin, 2,3,7,8- | 01746-01-6 |
| tetrachloroethane, 1,1,2,2- | 00079-34-5 |
| tetrachloroethylene (perchloroethylene) | 00127-18-4 |
| tetrafluoroethylene | 00116-14-3 |
| tetramethyl succinonitrile | 03333-52-6 |
| tetranitromethane | 00509-14-8 |
| tin metal, oxide & inorganic compounds, as Sn; Organic compounds | 07440-31-5 |
| titanium tetrachloride | 07550-45-0 |
| toluene | 00108-88-3 |
| toluene-2,4-diamine | 00095-80-7 |
| toluene-2,4-diisocyanate or 2,6-diisocyanate (or as a mixture) | 00584-84-9; 00091-08-7 |
| toluidine, o- | 00095-53-4 |
| toxaphene | 08001-35-2 |
| trichlorobenzene, 1,2,4- | 00120-82-1 |
| trichloroethane, 1,1,2- | 00079-00-5 |
| trichloroethylene | 00079-01-6 |
| trichlorophenol, 2,4,5- | 00095-95-4 |
| trichlorophenol, 2,4,6- | 00088-06-2 |
| trichloropropane, 1,2,3- | 00096-18-4 |
| triethylamine | 00121-44-8 |
| trifluralin | 01582-09-8 |
| trimellitic anhydride | 00552-30-7 |
| trimethylpentane, 2,2,4- (isooctane) | 00540-84-1 |
| trinitrotoluene, 2,4,6- | 00118-96-7 |
| triorthocresyl phosphate | 00078-30-8 |
| vanadium pentoxide, as V2O5 dust or fume | 01314-62-1 |
| vinyl acetate | 00108-05-4 |
| vinyl bromide | 00593-60-2 |
| vinyl chloride | 00075-01-4 |
| vinyl cyclohexene, 4- | 00100-40-3 |
| vinyl fluoride | 00075-02-5 |
| vinyl-1-cyclohexene dioxide, 4- | 00106-87-6 |
| vinylidene chloride | 00075-35-4 |
| xylenes | 01330-20-7 |
| xylenes, m-, | 00108-38-3 |
| xylenes, o- | 00095-47-6 |
| xylenes, p- | 00106-42-3 |
| zinc chloride fume | 07646-85-7 |
| zinc oxide | 01314-13-2 |
* = No CAS number available
Last updated August 15, 2024 at 9:54 AM