Chemical

Products

Triphosgene

Cas Number

32315-10-9

Other Names

BTC

The formula

C3Cl6O3

Introduction

Triphosgene (bis(trichloromethyl) carbonate (BTC), 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 above 200 °C.

Physical and Chemical Properties
Molar mass 296.748 g/mol
Appearance white crystals
Density 1.780 g/cm3
Melting point 80 °C (176 °F; 353 K)
Boiling point 206 °C (403 °F; 479 K)
Solubility in water Reacts
Solubility soluble in dichloromethane
soluble in THF soluble in toluene
Applications

Triphosgene is used as a reagent in organic synthesis and is a less hazardous substitute for phosgene for a variety of chemical transformations including to bond one carbonyl group to two alcohols, and to convert an amine group into isocyanate.