40 C.F.R. § 68 app A to Part 68

Current through September 30, 2024
Appendix A to Part 68 - Table of Toxic Endpoints

[As defined in § 68.22 of this part]

CAS No. Chemical nameToxic endpoint (mg/L)
107-02-8Acrolein [2-Propenal]0.0011
107-13-1Acrylonitrile [2-Propenenitrile]0.076
814-68-6Acrylyl chloride [2-Propenoyl chloride]0.00090
107-18-6Allyl alcohol [2-Propen-1-ol]0.036
107-11-9Allylamine [2-Propen-1-amine]0.0032
7664-41-7Ammonia (anhydrous)0.14
7664-41-7Ammonia (conc 20% or greater)0.14
7784-34-1Arsenous trichloride0.010
7784-42-1Arsine0.0019
10294-34-5Boron trichloride [Borane, trichloro-]0.010
7637-07-2Boron trifluoride [Borane, trifluoro-]0.028
353-42-4Boron trifluoride compound with methyl ether (1:1) [Boron, trifluoro[oxybis[methane]]-, T-40.023
7726-95-6Bromine0.0065
75-15-0Carbon disulfide0.16
7782-50-5Chlorine0.0087
10049-04-4Chlorine dioxide [Chlorine oxide (ClO2)]0.0028
67-66-3Chloroform [Methane, trichloro-]0.49
542-88-1Chloromethyl ether [Methane, oxybis[chloro-]0.00025
107-30-2Chloromethyl methyl ether [Methane, chloromethoxy-]0.0018
4170-30-3Crotonaldehyde [2-Butenal]0.029
123-73-9Crotonaldehyde, (E)-, [2-Butenal, (E)-]0.029
506-77-4Cyanogen chloride0.030
108-91-8Cyclohexylamine [Cyclohexanamine]0.16
19287-45-7Diborane0.0011
75-78-5Dimethyldichlorosilane [Silane, dichlorodimethyl-]0.026
57-14-71,1-Dimethylhydrazine [Hydrazine, 1,1-dimethyl-]0.012
106-89-8Epichlorohydrin [Oxirane, (chloromethyl)-]0.076
107-15-3Ethylenediamine [1,2-Ethanediamine]0.49
151-56-4Ethyleneimine [Aziridine]0.018
75-21-8Ethylene oxide [Oxirane]0.090
7782-41-4Fluorine0.0039
50-00-0Formaldehyde (solution)0.012
110-00-9Furan0.0012
302-01-2Hydrazine0.011
7647-01-0Hydrochloric acid (conc 37% or greater)0.030
74-90-8Hydrocyanic acid0.011
7647-01-0Hydrogen chloride (anhydrous) [Hydrochloric acid]0.030
7664-39-3Hydrogen fluoride/Hydrofluoric acid (conc 50% or greater) [Hydrofluoric acid]0.016
7783-07-5Hydrogen selenide0.00066
7783-06-4Hydrogen sulfide0.042
13463-40-6Iron, pentacarbonyl- [Iron carbonyl (Fe(CO)5), (TB-5-11)-]0.00044
78-82-0Isobutyronitrile [Propanenitrile, 2-methyl-]0.14
108-23-6Isopropyl chloroformate [Carbonochloride acid, 1-methylethyl ester]0.10
126-98-7Methacrylonitrile [2-Propenenitrile, 2-methyl-]0.0027
74-87-3Methyl chloride [Methane, chloro-]0.82
79-22-1Methyl chloroformate [Carbonochloridic acid, methylester]0.0019
60-34-4Methyl hydrazine [Hydrazine, methyl-]0.0094
624-83-9Methyl isocyanate [Methane, isocyanato-]0.0012
74-93-1Methyl mercaptan [Methanethiol]0.049
556-64-9Methyl thiocyanate [Thiocyanic acid, methyl ester]0.085
75-79-6Methyltrichlorosilane [Silane, trichloromethyl-]0.018
13463-39-3Nickel carbonyl0.00067
7697-37-2Nitric acid (conc 80% or greater)0.026
10102-43-9Nitric oxide [Nitrogen oxide (NO)]0.031
8014-95-7Oleum (Fuming Sulfuric acid) [Sulfuric acid, mixture with sulfur trioxide]0.010
79-21-0Peracetic acid [Ethaneperoxoic acid]0.0045
594-42-3Perchloromethylmercaptan [Methanesulfenyl chloride, trichloro-]0.0076
75-44-5Phosgene [Carbonic dichloride]0.00081
7803-51-2Phosphine0.0035
10025-87-3Phosphorus oxychloride [Phosphoryl chloride]0.0030
7719-12-2Phosphorus trichloride [Phosphorous trichloride]0.028
110-89-4Piperidine0.022
107-12-0Propionitrile [Propanenitrile]0.0037
109-61-5Propyl chloroformate [Carbonochloridic acid, propylester]0.010
75-55-8Propyleneimine [Aziridine, 2-methyl-]0.12
75-56-9Propylene oxide [Oxirane, methyl-]0.59
7446-09-5Sulfur dioxide (anhydrous)0.0078
7783-60-0Sulfur tetrafluoride [Sulfur fluoride (SF4), (T-4)-]0.0092
7446-11-9Sulfur trioxide0.010
75-74-1Tetramethyllead [Plumbane, tetramethyl-]0.0040
509-14-8Tetranitromethane [Methane, tetranitro-]0.0040
7750-45-0Titanium tetrachloride [Titanium chloride (TiCl4) (T-4)-]0.020
584-84-9Toluene 2,4-diisocyanate [Benzene, 2,4-diisocyanato-1-methyl-]0.0070
91-08-7Toluene 2,6-diisocyanate [Benzene, 1,3-diisocyanato-2-methyl-]0.0070
26471-62-5Toluene diisocyanate (unspecified isomer) [Benzene, 1,3-diisocyanatomethyl-]0.0070
75-77-4Trimethylchlorosilane [Silane, chlorotrimethyl-]0.050
108-05-4Vinyl acetate monomer [Acetic acid ethenyl ester]0.26

40 C.F.R. 68 app A to Part 68

61 FR 31729, June 20, 1996, as amended at 62 FR 45132, Aug. 25, 1997