24 CFR Appendix I to Subpart C of Part 51
Specific Hazardous Substances
February 22, 2021
The following is a list of specific petroleum products and chemicals defined to be hazardous substances under §51.201.
Hazardous Liquids
Open Table| Acetic Acid | Ethyl Benzene |
| Acetic Anhydride | Ethyl Dichloride |
| Acetone | Ethyl Ether |
| Acrylonitrile | Gasoline |
| Amyl Acetate | Heptane |
| Amyl Alcohol | Hexane |
| Benzene | Isobutyl Acetate |
| Butyl Acetate | Isobutyl Alcohol |
| Butyl Acrylate | Isopropyl Acetate |
| Butyl Alcohol | Isopropyl Alcohol |
| Carbon Bisulfide | Jet Fuel and Kerosene |
| Carbon Disulfide | Methyl Alcohol |
| Cellosolve | Methyl Amyl Alcohol |
| Cresols | Methyl Cellosolve |
| Crude Oil (Petroleum) | Methyl Ethyl Ketone |
| Cumene | Naptha |
| Cyclohexane | Pentane |
| No. 2 Diesel Fuel | Propylene Oxide |
| Ethyl Acetate | Toluene |
| Ethyl Acrylate | Vinyl Acetate |
| Ethyl Alcohol | Xylene |
Hazardous Gases
Open Table| Acetaldehyde | Hydrogen |
| Butadiene | Liquefied Natural Gas (LNG) |
| Butane | Liquefied Petroleum Gas (LPG) |
| Ethene | Propane |
| Ethylene | Propylene |
| Ethylene Oxide | Vinyl Chloride |
(Primary Source: “Urban Development Siting with respect to Hazardous Commercial/Industrial Facilities,” by Rolf Jensen and Associates, Inc., April 1982)
[49 FR 5105, Feb. 10, 1984; 49 FR 12214, Mar. 29, 1984]
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