The Urethane reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Urethane

Urethane (NH₂*COOCOC₂H₅) is an ester of carbamic acid in an arrangement created when an isocyanate reacts with a hydroxyl group. It is a white crystalline substance produced by the action of ammonia on ethyl carbonate or by heating urea nitrate and ethyl alcohol. It is used as a hypnotic, antipyretic, and antispasmodic. Hence, any ester of carbamic acid. When a polyisocyanate reacts with a polyol (a molecule with multiple hydroxyl groups), the result is polyurethane.

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