Methyl chloroformate

Methyl chloroformate^[1]

Names
IUPAC name methyl carbonochloridate
Identifiers
CAS Registry Number	79-22-1 Y
ChemSpider	6337 Y
InChI InChI=1S/C2H3ClO2/c1-5-2(3)4/h1H3 Y Key: XMJHPCRAQCTCFT-UHFFFAOYSA-N Y InChI=1/C2H3ClO2/c1-5-2(3)4/h1H3 Key: XMJHPCRAQCTCFT-UHFFFAOYAT
Jmol-3D images	Image Image
PubChem	6586
SMILES O=C(Cl)OC ClC(=O)OC
Properties
Molecular formula	C2H3ClO2
Molar mass	94.50 g·mol−1
Density	1.223 g/mL
Boiling point	70 to 72 °C (158 to 162 °F; 343 to 345 K)
Hazards
EU classification	C N Xn
R-phrases	R34 R50/53
S-phrases	(S1/2) S26 S45 S60 S61
Flash point	10 °C (50 °F; 283 K)
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Methyl chloroformate is the methyl ester of chloroformic acid. It is also known as methyl chlorocarbonate, and is an oily liquid with a colour that is anywhere from yellow to colorless. It is also known for its pungent odour. Methyl chloroformate, if heated, releases phosgene and produces toxic, corrosive fumes if it comes in contact with water.

Methyl chloroformate is used in organic synthesis for the introduction of the methoxycarbonyl functionality to a suitable nucleophile.

References