40 CFR § 117.3
Determination of reportable quantities
June 9, 2020
Each substance in Table 117.3 that is listed in Table 302.4, 40 CFR part 302, is assigned the reportable quantity listed in Table 302.4 for that substance.
Table 117.3—Reportable Quantities of Hazardous Substances Designated Pursuant to Section 311 of the Clean Water Act
Note: The first number under the column headed “RQ” is the reportable quantity in pounds. The number in parentheses is the metric equivalent in kilograms. For convenience, the table contains a column headed “Category” which lists the code letters “X”, “A”, “B”, “C”, and “D” associated with reportable quantities of 1, 10, 100, 1000, and 5000 pounds, respectively.
Table 117.3—Reportable Quantities of Hazardous Substances Designated Pursuant to Section 311 of the Clean Water Act
Open Table
| Material | Category | RQ in pounds (kilograms) |
|---|---|---|
| Acetaldehyde | C | 1,000 (454) |
| Acetic acid | D | 5,000 (2,270) |
| Acetic anhydride | D | 5,000 (2,270) |
| Acetone cyanohydrin | A | 10 (4.54) |
| Acetyl bromide | D | 5,000 (2,270) |
| Acetyl chloride | D | 5,000 (2,270) |
| Acrolein | X | 1 (0.454) |
| Acrylonitrile | B | 100 (45.4) |
| Adipic acid | D | 5,000 (2,270) |
| Aldrin | X | 1 (0.454) |
| Allyl alcohol | B | 100 (45.4) |
| Allyl chloride | C | 1,000 (454) |
| Aluminum sulfate | D | 5,000 (2,270) |
| Ammonia | B | 100 (45.4) |
| Ammonium acetate | D | 5,000 (2,270) |
| Ammonium benzoate | D | 5,000 (2,270) |
| Ammonium bicarbonate | D | 5,000 (2,270) |
| Ammonium bichromate | A | 10 (4.54) |
| Ammonium bifluoride | B | 100 (45.4) |
| Ammonium bisulfite | D | 5,000 (2,270) |
| Ammonium carbamate | D | 5,000 (2,270) |
| Ammonium carbonate | D | 5,000 (2,270) |
| Ammonium chloride | D | 5,000 (2,270) |
| Ammonium chromate | A | 10 (4.54) |
| Ammonium citrate dibasic | D | 5,000 (2,270) |
| Ammonium fluoborate | D | 5,000 (2,270) |
| Ammonium fluoride | B | 100 (45.4) |
| Ammonium hydroxide | C | 1,000 (454) |
| Ammonium oxalate | D | 5,000 (2,270) |
| Ammonium silicofluoride | C | 1,000 (454) |
| Ammonium sulfamate | D | 5,000 (2,270) |
| Ammonium sulfide | B | 100 (45.4) |
| Ammonium sulfite | D | 5,000 (2,270) |
| Ammonium tartrate | D | 5,000 (2,270) |
| Ammonium thiocyanate | D | 5,000 (2,270) |
| Amyl acetate | D | 5,000 (2,270) |
| Aniline | D | 5,000 (2,270) |
| Antimony pentachloride | C | 1,000 (454) |
| Antimony potassium tartrate | B | 100 (45.4) |
| Antimony tribromide | C | 1,000 (454) |
| Antimony trichloride | C | 1,000 (454) |
| Antimony trifluoride | C | 1,000 (454) |
| Antimony trioxide | C | 1,000 (454) |
| Arsenic disulfide | X | 1 (0.454) |
| Arsenic pentoxide | X | 1 (0.454) |
| Arsenic trichloride | X | 1 (0.454) |
| Arsenic trioxide | X | 1 (0.454) |
| Arsenic trisulfide | X | 1 (0.454) |
| Barium cyanide | A | 10 (4.54) |
| Benzene | A | 10 (4.54) |
| Benzoic acid | D | 5,000 (2,270) |
| Benzonitrile | D | 5,000 (2,270) |
| Benzoyl chloride | C | 1,000 (454) |
| Benzyl chloride | B | 100 (45.4) |
| Beryllium chloride | X | 1 (0.454) |
| Beryllium fluoride | X | 1 (0.454) |
| Beryllium nitrate | X | 1 (0.454) |
| Butyl acetate | D | 5,000 (2,270) |
| Butylamine | C | 1,000 (454) |
| n-Butyl phthalate | A | 10 (4.54) |
| Butyric acid | D | 5,000 (2,270) |
| Cadmium acetate | A | 10 (4.54) |
| Cadmium bromide | A | 10 (4.54) |
| Cadmium chloride | A | 10 (4.54) |
| Calcium arsenate | X | 1 (0.454) |
| Calcium arsenite | X | 1 (0.454) |
| Calcium carbide | A | 10 (4.54) |
| Calcium chromate | A | 10 (4.54) |
| Calcium cyanide | A | 10 (4.54) |
| Calcium dodecylbenzenesulfonate | C | 1,000 (454) |
| Calcium hypochlorite | A | 10 (4.54) |
| Captan | A | 10 (4.54) |
| Carbaryl | B | 100 (45.4) |
| Carbofuran | A | 10 (4.54) |
| Carbon disulfide | B | 100 (45.4) |
| Carbon tetrachloride | A | 10 (4.54) |
| Chlordane | X | 1 (0.454) |
| Chlorine | A | 10 (4.54) |
| Chlorobenzene | B | 100 (45.4) |
| Chloroform | A | 10 (4.54) |
| Chlorosulfonic acid | C | 1,000 (454) |
| Chlorpyrifos | X | 1 (0.454) |
| Chromic acetate | C | 1,000 (454) |
| Chromic acid | A | 10 (4.54) |
| Chromic sulfate | C | 1,000 (454) |
| Chromous chloride | C | 1,000 (454) |
| Cobaltous bromide | C | 1,000 (454) |
| Cobaltous formate | C | 1,000 (454) |
| Cobaltous sulfamate | C | 1,000 (454) |
| Coumaphos | A | 10 (4.54) |
| Cresol | B | 100 (45.4) |
| Crotonaldehyde | B | 100 (45.4) |
| Cupric acetate | B | 100 (45.4) |
| Cupric acetoarsenite | X | 1 (0.454) |
| Cupric chloride | A | 10 (4.54) |
| Cupric nitrate | B | 100 (45.4) |
| Cupric oxalate | B | 100 (45.4) |
| Cupric sulfate | A | 10 (4.54) |
| Cupric sulfate, ammoniated | B | 100 (45.4) |
| Cupric tartrate | B | 100 (45.4) |
| Cyanogen chloride | A | 10 (4.54) |
| Cyclohexane | C | 1,000 (454) |
| 2,4-D Acid | B | 100 (45.4) |
| 2,4-D Esters | B | 100 (45.4) |
| DDT | X | 1 (0.454) |
| Diazinon | X | 1 (0.454) |
| Dicamba | C | 1,000 (454) |
| Dichlobenil | B | 100 (45.4) |
| Dichlone | X | 1 (0.454) |
| Dichlorobenzene | B | 100 (45.4) |
| Dichloropropane | C | 1,000 (454) |
| Dichloropropene | B | 100 (45.4) |
| Dichloropropene-Dichloropropane (mixture) | B | 100 (45.4) |
| 2,2-Dichloropropionic acid | D | 5,000 (2,270) |
| Dichlorvos | A | 10 (4.54) |
| Dicofol | A | 10 (4.54) |
| Dieldrin | X | 1 (0.454) |
| Diethylamine | B | 100 (45.4) |
| Dimethylamine | C | 1,000 (454) |
| Dinitrobenzene (mixed) | B | 100 (45.4) |
| Dinitrophenol | A | 10 (45.4) |
| Dinitrotoluene | A | 10 (4.54) |
| Diquat | C | 1,000 (454) |
| Disulfoton | X | 1 (0.454) |
| Diuron | B | 100 (45.4) |
| Dodecylbenzenesulfonic acid | C | 1,000 (454) |
| Endosulfan | X | 1 (0.454) |
| Endrin | X | 1 (0.454) |
| Epichlorohydrin | B | 100 (45.4) |
| Ethion | A | 10 (4.54) |
| Ethylbenzene | C | 1,000 (454) |
| Ethylenediamine | D | 5,000 (2,270) |
| Ethylenediamine-tetraacetic acid (EDTA) | D | 5,000 (2,270) |
| Ethylene dibromide | X | 1 (0.454) |
| Ethylene dichloride | B | 100 (45.4) |
| Ferric ammonium citrate | C | 1,000 (454) |
| Ferric ammonium oxalate | C | 1,000 (454) |
| Ferric chloride | C | 1,000 (454) |
| Ferric fluoride | B | 100 (45.4) |
| Ferric nitrate | C | 1,000 (454) |
| Ferric sulfate | C | 1,000 (454) |
| Ferrous ammonium sulfate | C | 1,000 (454) |
| Ferrous chloride | B | 100 (45.4) |
| Ferrous sulfate | C | 1,000 (454) |
| Formaldehyde | B | 100 (45.4) |
| Formic acid | D | 5,000 (2,270) |
| Fumaric acid | D | 5,000 (2,270) |
| Furfural | D | 5,000 (2,270) |
| Guthion | X | 1 (0.454) |
| Heptachlor | X | 1 (0.454) |
| Hexachlorocyclopentadiene | A | 10 (4.54) |
| Hydrochloric acid | D | 5,000 (2,270) |
| Hydrofluoric acid | B | 100 (45.4) |
| Hydrogen cyanide | A | 10 (4.54) |
| Hydrogen sulfide | B | 100 (45.4) |
| Isoprene | B | 100 (45.4) |
| Isopropanolamine dodecylbenzenesulfonate | C | 1,000 (454) |
| Kepone | X | 1 (0.454) |
| Lead acetate | A | 10 (4.54) |
| Lead arsenate | X | 1 (0.454) |
| Lead chloride | A | 10 (4.54) |
| Lead fluoborate | A | 10 (4.54) |
| Lead fluoride | A | 10 (4.54) |
| Lead iodide | A | 10 (4.54) |
| Lead nitrate | A | 10 (4.54) |
| Lead stearate | A | 10 (4.54) |
| Lead sulfate | A | 10 (4.54) |
| Lead sulfide | A | 10 (4.54) |
| Lead thiocyanate | A | 10 (4.54) |
| Lindane | X | 1 (0.454) |
| Lithium chromate | A | 10 (4.54) |
| Malathion | B | 100 (45.4) |
| Maleic acid | D | 5,000 (2,270) |
| Maleic anhydride | D | 5,000 (2,270) |
| Mercaptodimethur | A | 10 (4.54) |
| Mercuric cyanide | X | 1 (0.454) |
| Mercuric nitrate | A | 10 (4.54) |
| Mercuric sulfate | A | 10 (4.54) |
| Mercuric thiocyanate | A | 10 (4.54) |
| Mercurous nitrate | A | 10 (4.54) |
| Methoxychlor | X | 1 (0.454) |
| Methyl mercaptan | B | 100 (45.4) |
| Methyl methacrylate | C | 1,000 (454) |
| Methyl parathion | B | 100 (45.4) |
| Mevinphos | A | 10 (4.54) |
| Mexacarbate | C | 1,000 (454) |
| Monoethylamine | B | 100 (45.4) |
| Monomethylamine | B | 100 (45.4) |
| Naled | A | 10 (4.54) |
| Naphthalene | B | 100 (45.4) |
| Naphthenic acid | B | 100 (45.4) |
| Nickel ammonium sulfate | B | 100 (45.4) |
| Nickel chloride | B | 100 (45.4) |
| Nickel hydroxide | A | 10 (4.54) |
| Nickel nitrate | B | 100 (45.4) |
| Nickel sulfate | B | 100 (45.4) |
| Nitric acid | C | 1,000 (454) |
| Nitrobenzene | C | 1,000 (454) |
| Nitrogen dioxide | A | 10 (4.54) |
| Nitrophenol (mixed) | B | 100 (45.4) |
| Nitrotoluene | C | 1,000 (454) |
| Paraformaldehyde | C | 1,000 (454) |
| Parathion | A | 10 (4.54) |
| Pentachlorophenol | A | 10 (4.54) |
| Phenol | C | 1,000 (454) |
| Phosgene | A | 10 (4.54) |
| Phosphoric acid | D | 5,000 (2,270) |
| Phosphorus | X | 1 (0.454) |
| Phosphorus oxychloride | C | 1,000 (454) |
| Phosphorus pentasulfide | B | 100 (45.4) |
| Phosphorus trichloride | C | 1,000 (454) |
| Polychlorinated biphenyls | X | 1 (0.454) |
| Potassium arsenate | X | 1 (0.454) |
| Potassium arsenite | X | 1 (0.454) |
| Potassium bichromate | A | 10 (4.54) |
| Potassium chromate | A | 10 (4.54) |
| Potassium cyanide | A | 10 (4.54) |
| Potassium hydroxide | C | 1,000 (454) |
| Potassium permanganate | B | 100 (45.4) |
| Propargite | A | 10 (4.54) |
| Propionic acid | D | 5,000 (2,270) |
| Propionic anhydride | D | 5,000 (2,270) |
| Propylene oxide | B | 100 (45.4) |
| Pyrethrins | X | 1 (0.454) |
| Quinoline | D | 5,000 (2,270) |
| Resorcinol | D | 5,000 (2,270) |
| Selenium oxide | A | 10 (4.54) |
| Silver nitrate | X | 1 (0.454) |
| Sodium | A | 10 (4.54) |
| Sodium arsenate | X | 1 (0.454) |
| Sodium arsenite | X | 1 (0.454) |
| Sodium bichromate | A | 10 (4.54) |
| Sodium bifluoride | B | 100 (45.4) |
| Sodium bisulfite | D | 5,000 (2,270) |
| Sodium chromate | A | 10 (4.54) |
| Sodium cyanide | A | 10 (4.54) |
| Sodium dodecylbenzenesulfonate | C | 1,000 (454) |
| Sodium fluoride | C | 1,000 (454) |
| Sodium hydrosulfide | D | 5,000 (2,270) |
| Sodium hydroxide | C | 1,000 (454) |
| Sodium hypochlorite | B | 100 (45.4) |
| Sodium methylate | C | 1,000 (454) |
| Sodium nitrite | B | 100 (45.4) |
| Sodium phosphate, dibasic | D | 5,000 (2,270) |
| Sodium phosphate, tribasic | D | 5,000 (2,270) |
| Sodium selenite | B | 100 (45.4) |
| Strontium chromate | A | 10 (4.54) |
| Strychnine | A | 10 (4.54) |
| Styrene | C | 1,000 (454) |
| Sulfuric acid | C | 1,000 (454) |
| Sulfur monochloride | C | 1,000 (454) |
| 2,4,5-T acid | C | 1,000 (454) |
| 2,4,5-T amines | D | 5,000 (2,270) |
| 2,4,5-T esters | C | 1,000 (454) |
| 2,4,5-T salts | C | 1,000 (454) |
| TDE | X | 1 (0.454) |
| 2,4,5-TP acid | B | 100 (45.4) |
| 2,4,5-TP acid esters | B | 100 (45.4) |
| Tetraethyl lead | A | 10 (4.54) |
| Tetraethyl pyrophosphate | A | 10 (4.54) |
| Thallium sulfate | B | 100 (45.4) |
| Toluene | C | 1,000 (454) |
| Toxaphene | X | 1 (0.454) |
| Trichlorfon | B | 100 (45.4) |
| Trichloroethylene | B | 100 (45.4) |
| Trichlorophenol | A | 10 (4.54) |
| Triethanolamine dodecylbenzenesulfonate | C | 1,000 (454) |
| Triethylamine | D | 5,000 (2,270) |
| Trimethylamine | B | 100 (45.4) |
| Uranyl acetate | B | 100 (45.4) |
| Uranyl nitrate | B | 100 (45.4) |
| Vanadium pentoxide | C | 1,000 (454) |
| Vanadyl sulfate | C | 1,000 (454) |
| Vinyl acetate | D | 5,000 (2,270) |
| Vinylidene chloride | B | 100 (45.4) |
| Xylene (mixed) | B | 100 (45.4) |
| Xylenol | C | 1,000 (454) |
| Zinc acetate | C | 1,000 (454) |
| Zinc ammonium chloride | C | 1,000 (454) |
| Zinc borate | C | 1,000 (454) |
| Zinc bromide | C | 1,000 (454) |
| Zinc carbonate | C | 1,000 (454) |
| Zinc chloride | C | 1,000 (454) |
| Zinc cyanide | A | 10 (4.54) |
| Zinc fluoride | C | 1,000 (454) |
| Zinc formate | C | 1,000 (454) |
| Zinc hydrosulfite | C | 1,000 (454) |
| Zinc nitrate | C | 1,000 (454) |
| Zinc phenolsulfonate | D | 5,000 (2,270) |
| Zinc phosphide | B | 100 (45.4) |
| Zinc silicofluoride | D | 5,000 (2,270) |
| Zinc sulfate | C | 1,000 (454) |
| Zirconium nitrate | D | 5,000 (2,270) |
| Zirconium potassium fluoride | C | 1,000 (454) |
| Zirconium sulfate | D | 5,000 (2,270) |
| Zirconium tetrachloride | D | 5,000 (2,270) |
[50 FR 13513, Apr. 4, 1985, as amended at 51 FR 34547, Sept. 29, 1986; 54 FR 33482, Aug. 14, 1989; 58 FR 35327, June 30, 1993; 60 FR 30937, June 12, 1995]
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