Propylene oxide: Regulation A probable carcinogen with a flash point of -37 C
Summary Overview Correlation Production route Production Feedstocks Cycles Trading Movement Regulation Characteristics Emissions Relationships Hazards Classification UN number Key risks Flammable liquid cat 1; acute toxicity cat 3-4; carcinogenic cat 1B; mutagenic cat 1B; eye irritant UN1280 Extremely flammable with a very low flash point (about -37°C); probable carcinogen; can polymerise violently with catalysts.
Main rules Where Rule Effect EU REACH (CMR); Seveso III; Industrial Emissions Directive Strict handling; chlorohydrin wastewater limits. China Industrial Structure Adjustment Catalogue restricts new chlorohydrin PO Pushes HPPO and co-oxidation routes (indicative). US EPA HON rule (2024) covers PO emissions Fenceline monitoring and controls.
India Rule Effect MSIHC Rules 1989 PO listed as hazardous; safety reports for storage. Petroleum Rules 2002 / PESO for Class A flammable liquids Licensed storage.
Trade measures No significant PO duties found Supply risk Over half of capacity is in China; India has almost no domestic PO. Not on critical lists.