Ethylene propylene diene

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An elastomeric terpolymer composed of ethylene, propylene and a small amount of a diene. Ethylene-propylene diene terpolymer, or EPDM, is an off-white, rubber-like material that can be vulcanized with sulfur, peroxides or phenolics to form a chemically resistant rubber. It is resistant to ozone, acids and alkalis and retains its elasticity over a wide temperature range (-51 to 148C). EPDM is used for gaskets, coated fabrics, footwear and for automobile and appliance parts. See also Ethylene propylene rubber.

Synonyms and Related Terms

EPDM; terpolímero de etileno - propileno (Esp.); terpolímero de etileno-propileno (Port.)

Examples: Nordel [Dow];

Personal risks

Collection risks

  • Combustible.

Physical and Chemical Properties

The ratio of the polymeric components can be varied to provide products with different characteristics. Some products contain additives such as fillers and plasticizers.

EPDM is affected by hydrocarbon and halogenated solvents. It is insoluble in water, acids, alkalis and ketones (acetone).

Resources and Citations

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 306
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002