Ethyl chloroformate

Ethyl chloroformate

Names
Preferred IUPAC name Ethyl carbonochloridate
Other names Chloroformic acid ethyl ester Cathyl chloride Ethyl chlorocarbonate TL-423
Identifiers
CAS Number	541-41-3 Y
3D model (JSmol)	Interactive image
ChemSpider	10465 Y
EC Number	208-778-5
PubChem CID	10928
RTECS number	LQ6125000
UNII	09601EZP9R Y
UN number	1182
InChI InChI=1S/C3H5ClO2/c1-2-6-3(4)5/h2H2,1H3 Y Key: RIFGWPKJUGCATF-UHFFFAOYSA-N Y InChI=1/C3H5ClO2/c1-2-6-3(4)5/h2H2,1H3 Key: RIFGWPKJUGCATF-UHFFFAOYAX
SMILES ClC(=O)OCC
Properties
Chemical formula	C3H5ClO2
Molar mass	108.52 g/mol
Appearance	Clear liquid
Density	1.1403 g/cm3
Boiling point	95 °C (203 °F; 368 K)
Solubility in water	Decomposes
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Corrosive Flammable
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H302, H314, H330
Precautionary statements	P210, P233, P240, P241, P242, P243, P260, P264, P270, P271, P280, P284, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P320, P321, P330, P363, P370+P378, P403+P233, P403+P235, P405, P501
NFPA 704 (fire diamond)	4 3 0 W
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). Y verify (what is YN ?) 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 and for the formation of carboxylic anhydrides.

Preparation

Ethyl chloroformate can be prepared using ethanol and phosgene:

Safety

Ethyl chloroformate is a highly toxic, flammable, corrosive substance. It causes severe burns when comes in contact with eyes and/or skin, can be harmful if swallowed or inhaled.