Ethyl chloroformate

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Ethyl chloroformate[1]
Skeletal formula of ethyl chloroformate
Ball-and-stick model of the ethyl chloroformate molecule
Preferred IUPAC name
Ethyl carbonochloridate
Other names
Chloroformic acid ethyl ester
Cathyl chloride
Ethyl chlorocarbonate
3D model (JSmol)
ECHA InfoCard 100.007.981
Molar mass 108.52 g/mol
Appearance Clear liquid
Density 1.1403 g/cm3
Boiling point 95 °C (203 °F; 368 K)
Main hazards Corrosive
NFPA 704
Flammability code 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g., gasoline) Health code 4: Very short exposure could cause death or major residual injury. E.g., VX gas Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point 61 °C (142 °F; 334 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Ethyl chloroformate is the ethyl ester of chloroformic acid. It is a reagent used in organic synthesis for the introduction of the ethyl carbamate protecting group[2] and for the formation of carboxylic anhydrides.


  1. ^ Merck Index, 11th Edition, 3742.
  2. ^ Protective Groups in Organic Synthesis, Third Edition, Theodora W. Greene and Peter G. M. Wuts, pages 504-506, ISBN 0-471-16019-9