CAS ID#: 57-55-6
Affected Organ Systems: Respiratory (From the Nose to the Lungs)
Cancer Classification: Please contact NTP, IARC, or EPA with questions on cancer and cancer classification.
Chemical Classification: None
Summary: Propylene glycol is a synthetic liquid substance that absorbs water. Propylene glycol is also used to make polyester compounds, and as a base for deicing solutions. Propylene glycol is used by the chemical, food, and pharmaceutical industries as an antifreeze when leakage might lead to contact with food. The Food and Drug Administration (FDA) has classified propylene glycol as an additive that is “generally recognized as safe” for use in food. It is used to absorb extra water and maintain moisture in certain medicines, cosmetics, or food products. It is a solvent for food colors and flavors, and in the paint and plastics industries. Propylene glycol is also used to create artificial smoke or fog used in fire-fighting training and in theatrical productions. Other names for propylene glycol are 1,2-dihydroxypropane, 1,2-propanediol, methyl glycol, and trimethyl glycol.
Propylene glycol is clear, colorless, slightly syrupy liquid at room temperature. It may exist in air in the vapor form, although propylene glycol must be heated or briskly shaken to produce a vapor. Propylene glycol is practically odorless and tasteless.
ToxFAQs - Fact sheet that answers the most frequently asked questions about a contaminant and its health effects.
Public Health Statement - Summary about a hazardous substance taken from Chapter One of its respective ATSDR Toxicological Profile.
Toxicological Profile - Succinctly characterizes the toxicologic and adverse health effects information for a hazardous substance.
Addendum to the Profilepdf icon[220 KB] - Addendum to the Toxicological Profile for Propylene Glycol (December 2008)
Case Study in Environmental Medicine (CSEM) - Self-instructional publication designed to increase primary care provider's knowledge of a hazardous substance in the environment and to aid in the evaluation of potentially exposed patients.