Ethyl chloroformate

• Ethylchlormethanat
• Ethyl chloroformate
• Ethoxycarbonyl

Colorless liquid with a pungent odor

Liquid

1.14 g · cm -3 ( 20 ° C)

-80.6 ° C

95 ° C.

54 hPa ( 20 ° C)

Reacts with water

1.3974 (20 ° C)

Risk

204 mg · kg -1 ( LD50, rat, oral)

-505.3 KJ / mol

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Ethylchloroformate is a chemical compound, which serves as an intermediate for the production of various chemical compounds.

Production and representation

Ethyl chloroformate is obtained from phosgene and anhydrous ethanol.

Chemical Properties

Ethylchloroformate is a member of the chloroformic acid ester, as well as methyl chloroformate, butyl chloroformate, and benzyloxycarbonyl chloride.

Use

Ethyl chloroformate serves as a common intermediate in the production of carbonates and carbamates, which are used in the pharmaceutical industry as starting materials for syntheses.

Nomenclature

The common name " ethyl chloroformate " is not entirely correct, as it strictly speaking a derivative of carbonic acid is not a derivative of formic acid. Strictly speaking, this is a monochloride and at the same time the monoethyl ester of carbonic acid.

Safety

The vapors of ethyl chloroformate form at concentrations from 3.2 to 27.5 percent by volume with air to form an explosive mixture (flash point 16 ° C, ignition temperature 450 ° C). Add heat to the compound, with hydrogen chloride, phosgene, chlorine and other toxic substances can be freely decomposed.