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Chemical Sampling Information (CSI)
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General Description

Synonyms: Propene; 1-Propene; Methyl Ethene; Methylethylene

OSHA IMIS Code Number: P249

Chemical Abstracts Service (CAS) Registry Number: 115-07-1

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: UC6740000

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 1075 115

Chemical Description and Physical Properties:

colorless gas
molecular weight: 42.09
vapor pressure: 760 mm Hg @ -47.7°C
molecular formula: C3H6
boiling point: -47.7°C
melting point: -185.2°C

Incompatibilities: Incompatible with oxygen. Reacts with oxides of nitrogen to form an explosive product. Reacts violently with oxidizers. Explodes on contact with trifluoromethyl hypofluorite. Explosive polymerization is initiated by lithium nitrate + sulfur dioxide. May also form an ozonide which is explosive at ambient temperatures.

Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): Simple Asphyxiant; Appendix A4 (Not Classifiable as a Human Carcinogen)

Health Factors

Potential Symptoms: Drowsiness; unconsciousness; asphyxia; frostbite (contact with liquid)

Health Effects: Explosive (HE18) CNS effects (HE7); Asphyxiant (HE17)

Affected Organs: CNS

Notes: Excreted mainly by exhalation. A small amount is metabolized (possibly by CYP2E1) to propylene oxide, a known carcinogen in animals. However, propylene is not carcinogenic in rats and mice.

Literature Basis:

  • International Chemical Safety Cards (WHO/IPCS/ILO): Propylene.
  • Filser, J.G., Schmidbauer, R., Rampf, F., Baur, C.M., Ptz, C. and Csandy, G.A.: Toxicokinetics of inhaled propylene in mouse, rat, and human. Toxicol. Appl. Pharmacol. 169: 40-51, 2000.

Date Last Revised: 07/14/2003

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