Petroleum Gases, Liquefied (Sweetened)

Petroleum gases, liquefied (sweetened) is a refinery-derived mixture of C3–C4 hydrocarbons (propane, butane, isobutane) with hydrogen sulfide removed ("sweetened"). Used as an aerosol propellant in products where propane/butane alone would be labeled but the CAS 68476-86-8 blend notation is preferred. The GHS classification is H280 (gas under pressure) for the compressed state. No inhalation toxicity H-codes beyond simple asphyxiation at extremely high concentrations — the main hazard is fire and explosion. Because it's used as an aerosol propellant, it's classified as VOC-exempt under US EPA and CARB regulations, which is why it doesn't count toward regulated VOC in aerosol products. "Sweetened" (as opposed to "sour") means H2S has been removed by an amine treating process — this is standard for consumer-grade propellants to eliminate odor and corrosion concerns.