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Other Names:

Bis(trichloromethyl) carbonate


General Information:


CAS Number: 32315-10-9

Molecular Weight: 296.75 g/mol

Appearance: White solid

Common Uses:

Reagent in the formation of ureas

Procedure excerpt:

To a solution of triphosgene (26.4 mg, 0.090 mmol) in ACN (1 mL) at -5 C was added a solution of B (91.6 mg, 0.26 mmol) and TEA (73.2 uL) in ACN (1 mL) over 5 min. . . .

[full procedure]


Triphosgene decomposes to highly toxic phosgene on heating or with exposure to nucleophiles including H2O.


1) Patent Reference: WO2002016360, page 18, (1.3 MB)

2) Wikipedia: Triphosgene (link)

3) Triphosgene (link)