Regulations last checked for updates: May 18, 2024

Title 24 - Housing and Urban Development last revised: May 07, 2024
All TitlesTitle 24Part 51Subpart CAppendix Appendix I - Appendix I to Subpart C of Part 51—Specific Hazardous Substances
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Appendix Appendix I - Appendix I to Subpart C of Part 51—Specific Hazardous Substances

The following is a list of specific petroleum products and chemicals defined to be hazardous substances under § 51.201.

Hazardous Liquids
  • Acetic Acid
  • Acetic Anhydride
  • Acetone
  • Acrylonitrile
  • Amyl Acetate
  • Amyl Alcohol
  • Benzene
  • Butyl Acetate
  • Butyl Acrylate
  • Butyl Alcohol
  • Carbon Bisulfide
  • Carbon Disulfide
  • Cellosolve
  • Cresols
  • Crude Oil (Petroleum)
  • Cumene
  • Cyclohexane
  • No. 2 Diesel Fuel
  • Ethyl Acetate
  • Ethyl Acrylate
  • Ethyl Alcohol
  • Ethyl Benzene
  • Ethyl Dichloride
  • Ethyl Ether
  • Gasoline
  • Heptane
  • Hexane
  • Isobutyl Acetate
  • Isobutyl Alcohol
  • Isopropyl Acetate
  • Isopropyl Alcohol
  • Jet Fuel and Kerosene
  • Methyl Alcohol
  • Methyl Amyl Alcohol
  • Methyl Cellosolve
  • Methyl Ethyl Ketone
  • Naptha
  • Pentane
  • Propylene Oxide
  • Toluene
  • Vinyl Acetate
  • Xylene
    • Hazardous Gases
  • Acetaldehyde
  • Butadiene
  • Butane
  • Ethene
  • Ethylene
  • Ethylene Oxide
  • Hydrogen
  • Liquefied Natural Gas (LNG)
  • Liquefied Petroleum Gas (LPG)
  • Propane
  • Propylene
  • 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]
    authority: 42 U.S.C. 3535(d), unless otherwise noted
    source: 44 FR 40861, July 12, 1979, unless otherwise noted.
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