40 C.F.R. § 68 app A to Part 68
Current through March 31, 2024
[As defined in § 68.22 of this part]
| CAS No. | Chemical name | Toxic endpoint (mg/L) |
| 107-02-8 | Acrolein [2-Propenal] | 0.0011 |
| 107-13-1 | Acrylonitrile [2-Propenenitrile] | 0.076 |
| 814-68-6 | Acrylyl chloride [2-Propenoyl chloride] | 0.00090 |
| 107-18-6 | Allyl alcohol [2-Propen-1-ol] | 0.036 |
| 107-11-9 | Allylamine [2-Propen-1-amine] | 0.0032 |
| 7664-41-7 | Ammonia (anhydrous) | 0.14 |
| 7664-41-7 | Ammonia (conc 20% or greater) | 0.14 |
| 7784-34-1 | Arsenous trichloride | 0.010 |
| 7784-42-1 | Arsine | 0.0019 |
| 10294-34-5 | Boron trichloride [Borane, trichloro-] | 0.010 |
| 7637-07-2 | Boron trifluoride [Borane, trifluoro-] | 0.028 |
| 353-42-4 | Boron trifluoride compound with methyl ether (1:1) [Boron, trifluoro[oxybis[methane]]-, T-4 | 0.023 |
| 7726-95-6 | Bromine | 0.0065 |
| 75-15-0 | Carbon disulfide | 0.16 |
| 7782-50-5 | Chlorine | 0.0087 |
| 10049-04-4 | Chlorine dioxide [Chlorine oxide (ClO2)] | 0.0028 |
| 67-66-3 | Chloroform [Methane, trichloro-] | 0.49 |
| 542-88-1 | Chloromethyl ether [Methane, oxybis[chloro-] | 0.00025 |
| 107-30-2 | Chloromethyl methyl ether [Methane, chloromethoxy-] | 0.0018 |
| 4170-30-3 | Crotonaldehyde [2-Butenal] | 0.029 |
| 123-73-9 | Crotonaldehyde, (E)-, [2-Butenal, (E)-] | 0.029 |
| 506-77-4 | Cyanogen chloride | 0.030 |
| 108-91-8 | Cyclohexylamine [Cyclohexanamine] | 0.16 |
| 19287-45-7 | Diborane | 0.0011 |
| 75-78-5 | Dimethyldichlorosilane [Silane, dichlorodimethyl-] | 0.026 |
| 57-14-7 | 1,1-Dimethylhydrazine [Hydrazine, 1,1-dimethyl-] | 0.012 |
| 106-89-8 | Epichlorohydrin [Oxirane, (chloromethyl)-] | 0.076 |
| 107-15-3 | Ethylenediamine [1,2-Ethanediamine] | 0.49 |
| 151-56-4 | Ethyleneimine [Aziridine] | 0.018 |
| 75-21-8 | Ethylene oxide [Oxirane] | 0.090 |
| 7782-41-4 | Fluorine | 0.0039 |
| 50-00-0 | Formaldehyde (solution) | 0.012 |
| 110-00-9 | Furan | 0.0012 |
| 302-01-2 | Hydrazine | 0.011 |
| 7647-01-0 | Hydrochloric acid (conc 37% or greater) | 0.030 |
| 74-90-8 | Hydrocyanic acid | 0.011 |
| 7647-01-0 | Hydrogen chloride (anhydrous) [Hydrochloric acid] | 0.030 |
| 7664-39-3 | Hydrogen fluoride/Hydrofluoric acid (conc 50% or greater) [Hydrofluoric acid] | 0.016 |
| 7783-07-5 | Hydrogen selenide | 0.00066 |
| 7783-06-4 | Hydrogen sulfide | 0.042 |
| 13463-40-6 | Iron, pentacarbonyl- [Iron carbonyl (Fe(CO)5), (TB-5-11)-] | 0.00044 |
| 78-82-0 | Isobutyronitrile [Propanenitrile, 2-methyl-] | 0.14 |
| 108-23-6 | Isopropyl chloroformate [Carbonochloride acid, 1-methylethyl ester] | 0.10 |
| 126-98-7 | Methacrylonitrile [2-Propenenitrile, 2-methyl-] | 0.0027 |
| 74-87-3 | Methyl chloride [Methane, chloro-] | 0.82 |
| 79-22-1 | Methyl chloroformate [Carbonochloridic acid, methylester] | 0.0019 |
| 60-34-4 | Methyl hydrazine [Hydrazine, methyl-] | 0.0094 |
| 624-83-9 | Methyl isocyanate [Methane, isocyanato-] | 0.0012 |
| 74-93-1 | Methyl mercaptan [Methanethiol] | 0.049 |
| 556-64-9 | Methyl thiocyanate [Thiocyanic acid, methyl ester] | 0.085 |
| 75-79-6 | Methyltrichlorosilane [Silane, trichloromethyl-] | 0.018 |
| 13463-39-3 | Nickel carbonyl | 0.00067 |
| 7697-37-2 | Nitric acid (conc 80% or greater) | 0.026 |
| 10102-43-9 | Nitric oxide [Nitrogen oxide (NO)] | 0.031 |
| 8014-95-7 | Oleum (Fuming Sulfuric acid) [Sulfuric acid, mixture with sulfur trioxide] | 0.010 |
| 79-21-0 | Peracetic acid [Ethaneperoxoic acid] | 0.0045 |
| 594-42-3 | Perchloromethylmercaptan [Methanesulfenyl chloride, trichloro-] | 0.0076 |
| 75-44-5 | Phosgene [Carbonic dichloride] | 0.00081 |
| 7803-51-2 | Phosphine | 0.0035 |
| 10025-87-3 | Phosphorus oxychloride [Phosphoryl chloride] | 0.0030 |
| 7719-12-2 | Phosphorus trichloride [Phosphorous trichloride] | 0.028 |
| 110-89-4 | Piperidine | 0.022 |
| 107-12-0 | Propionitrile [Propanenitrile] | 0.0037 |
| 109-61-5 | Propyl chloroformate [Carbonochloridic acid, propylester] | 0.010 |
| 75-55-8 | Propyleneimine [Aziridine, 2-methyl-] | 0.12 |
| 75-56-9 | Propylene oxide [Oxirane, methyl-] | 0.59 |
| 7446-09-5 | Sulfur dioxide (anhydrous) | 0.0078 |
| 7783-60-0 | Sulfur tetrafluoride [Sulfur fluoride (SF4), (T-4)-] | 0.0092 |
| 7446-11-9 | Sulfur trioxide | 0.010 |
| 75-74-1 | Tetramethyllead [Plumbane, tetramethyl-] | 0.0040 |
| 509-14-8 | Tetranitromethane [Methane, tetranitro-] | 0.0040 |
| 7750-45-0 | Titanium tetrachloride [Titanium chloride (TiCl4) (T-4)-] | 0.020 |
| 584-84-9 | Toluene 2,4-diisocyanate [Benzene, 2,4-diisocyanato-1-methyl-] | 0.0070 |
| 91-08-7 | Toluene 2,6-diisocyanate [Benzene, 1,3-diisocyanato-2-methyl-] | 0.0070 |
| 26471-62-5 | Toluene diisocyanate (unspecified isomer) [Benzene, 1,3-diisocyanatomethyl-] | 0.0070 |
| 75-77-4 | Trimethylchlorosilane [Silane, chlorotrimethyl-] | 0.050 |
| 108-05-4 | Vinyl acetate monomer [Acetic acid ethenyl ester] | 0.26 |
40 C.F.R. 68 app A to Part 68