Bromotrichloromethane

Structural formula
General
Surname	Bromotrichloromethane
other names	Trichlorobromomethane Monobromotrichloromethane
Molecular formula	CBrCl 3
Brief description	colorless liquid with a pungent odor
External identifiers / databases
CAS number 75-62-7 EC number 200-886-0 ECHA InfoCard 100,000,806 PubChem 6383 Wikidata Q23780617
properties
Molar mass	198.27 g mol −1
Physical state	liquid
density	2.01 g cm −3
Melting point	−6 ° C
boiling point	105 ° C
Vapor pressure	49 hPa (25 ° C)
solubility	practically insoluble in water very soluble in ethanol and ether
Refractive index	1.5065 (20 ° C)
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 315-319-335 P: 260-302 + 352-305 + 351 + 338
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Bromotrichloromethane is a chemical compound from the group of saturated halomethanes .

Extraction and presentation

Bromotrichloromethane can be obtained by reacting carbon tetrachloride with hydrogen bromide or aluminum bromide. It is also possible to obtain it by reacting trichloromethane with bromine at 225 ° C to 400 ° C or potassium trichloroacetate with bromine at 120 ° C.

${\displaystyle \mathrm {Cl_{3}CCO_{2}K+Br_{2}\longrightarrow CBrCl_{3}+CO_{2}+KBr} }$

properties

Bromotrichloromethane is a volatile, colorless liquid with a pungent odor that is practically insoluble in water.

use

Bromotrichloromethane is used as a chain transfer agent for the radical polymerizations of methacrylates and as a brominating agent.

safety instructions

Bromotrichloromethane damages the liver in a similar way to carbon tetrachloride, but it is more effective because the splitting off of the bromine is easier than that of the chlorine.

Individual evidence

1. ↑ ^{a b c d e f g h i j} Entry for CAS no. 75-62-7 in the GESTIS substance database of the IFA , accessed on April 11, 2016(JavaScript required) .
2. ^ Entry on bromotrichloromethane in the Hazardous Substances Data Bank , accessed April 11, 2016.
3. ↑ ^{a b} Data sheet Bromotrichloromethane, 99% from Sigma-Aldrich , accessed on April 11, 2016 ( PDF ).
4. ^ Thomas L. Gilchrist: Comprehensive Organic Functional Group Transformations . Elsevier, 1995, ISBN 0-08-042704-9 , pp. 221 ( limited preview in Google Book search).
5. ^ Günter Fred Fuhrmann: Toxicology for Natural Scientists: Introduction to Theoretical and Special Toxicology . Springer-Verlag, 2006, ISBN 3-8351-0024-6 ( books.google.com ).