Bromotrichloromethane

Bromotrichloromethane is a tetrahalomethane with the chemical formula CBrCl₃. This is a halomethane containing one bromine atom and three chlorine atoms attached to the methane backbone.^[2]

Bromotrichloromethane

Names
Preferred IUPAC name Bromo(trichloro)methane
Other names Carbon bromotrichloride
Identifiers
CAS Number	75-62-7 Y
3D model (JSmol)	Interactive image
ChemSpider	6143
ECHA InfoCard	100.000.806
EC Number	200-886-0
PubChem CID	6383
UNII	IKJ30QXM63
CompTox Dashboard (EPA)	DTXSID7023930
InChI InChI=1S/CBrCl3/c2-1(3,4)5 Key: XNNQFQFUQLJSQT-UHFFFAOYSA-N
SMILES C(Cl)(Cl)(Cl)Br
Properties
Chemical formula	CBrCl3
Molar mass	198.27 g·mol−1
Appearance	liquid
Density	2.401 g/cm³
Melting point	−6 °C (21 °F; 267 K)
Boiling point	105 °C (221 °F; 378 K)
Solubility in water	practically insoluble
Hazards
GHS labelling:[1]
Pictograms
Signal word	Warning
Flash point	32.6 °C
Related compounds
Related compounds	Bromodichloromethane Tribromochloromethane
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

Bromotrichloromethane can be obtained by reacting carbon tetrachloride with hydrogen bromide or aluminum bromide.^[3] It can also be obtained by reacting trichloromethane with bromine at 225 °C to 400 °C or potassium trichloroacetate with bromine at 120 °C.^[4]

Cl₃CCO₂K + Br₂ → CBrCl₃ + CO₂ + KBr

Physical properties

Bromotrichloromethane is a volatile, non-flammable, colorless liquid with a pungent odor that is practically insoluble in water but highly miscible with organic solvents. It is readily evaporated upon exposure to the air. The compound is toxic.^[5]

Uses

Bromotrichloromethane is used as a chain transfer agent for the radical polymerization of methacrylates and as a brominating agent.^[6]