Triphosgene
IUPAC name	Bis(trichloromethyl) carbonate
Properties
Molecular formula	C3Cl6O3
Molar mass	296.748 g/mol
Melting point	80 °C, 353 K, 176 °F
Boiling point	206 °C, 479 K, 403 °F
Solubility in water	Reacts
Hazards
MSDS	Fisher MSDS
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Triphosgene (Bis(trichloromethyl) carbonate, C₃Cl₆O₃) is a chemical compound that is used as a safer substitute for phosgene, because at room temperature it is a solid crystal, as opposed to phosgene which is a gas. Triphosgene crystals decompose at around 130 °C, although, the decomposition temperature of impure samples can be much lower. Triphosgene is used in organic synthesis to bond one carbonyl group to two alcohols, as in the synthesis of octalactin B. It is prepared by exhaustive chlorination of dimethyl carbonate.

Triphosgene can be easily recrystallized from boiling hexanes to yield pure white crystals.

[edit] See also

• Phosgene
• Diphosgene

[edit] External links

• Technical datasheet from Aldrich