Chlorobenzotrichloride

Chlorobenzotrichloride
Surname	2-chlorobenzotrichloride	3-chlorobenzotrichloride	4-chlorobenzotrichloride
other names	o -chlorobenzotrichloride α, α, α, 2-tetrachlorotoluene, 2-chloro-1- (trichloromethyl) benzene	m -chlorobenzotrichloride α, α, α, 3-tetrachlorotoluene, 3-chloro-1- (trichloromethyl) benzene	p -chlorobenzotrichloride α, α, α, 4-tetrachlorotoluene 1-chloro-4- (trichloromethyl) benzene
Structural formula
CAS number	2136-89-2	2136-81-4	5216-25-1
PubChem	16494	75052	21277
ECHA InfoCard	100.016.707	100.016.706	100.023.645
Molecular formula	C 7 H 4 Cl 4
Molar mass	229.92 g mol −1
Physical state	firmly	???	liquid
Brief description	colorless, flammable solid with a pungent odor	???	colorless liquid with a characteristic odor
Melting point	29−31 ° C	???	5.8 ° C
boiling point	260-264 ° C		245 ° C
density	1.508 g cm −3 (25 ° C)		1.49 g cm −3 (25 ° C)
solubility	Decomposes in water, soluble in ether, acetone	???	Decomposes in water, soluble in alcohol, ether, acetone
Flash point	98 ° C		113 ° C
Ignition temperature			505 ° C
GHS labeling	Caution	no classification available	danger
H and P phrases	302-315-319-335-351-413	see above	302-312-315-335-350-361f-372
	see above	see above	no EUH phrases
	?	see above	201-261-280-308 + 313

The chlorobenzotrichlorides form a group of substances that can be understood as halogenated benzotrichlorides . The different arrangement of the substituents results in three constitutional isomers with the empirical formula C ₇ H ₄ Cl ₄ .

presentation

4-chlorobenzotrichloride is formed from a mixture of 4-chlorobenzotrifluoride and aluminum trichloride (anhydrous) with subsequent addition of silicon tetrachloride ; the reaction mixture is distilled in vacuo.

use

Chlorobenzotrichlorides are used as intermediates in the manufacture of herbicides, dyes, disinfectants and pharmaceuticals.

Individual evidence

1. ↑ ^{a b c d e f g} Entry on 2-chlorobenzotrichloride in the GESTIS substance database of the IFA , accessed on December 26, 2019(JavaScript required) .
2. ↑ ^{a b c d e f g h} Entry on 4-chlorobenzotrichloride in the GESTIS substance database of the IFA , accessed on December 26, 2019(JavaScript required) .
3. ↑ Data sheet 4-Chlorobenzotrichloride from Sigma-Aldrich , accessed on April 27, 2011 ( PDF ).
4. ↑ Process for the preparation of nuclear halides of benzotrichlorides from the corresponding benzotrifluorides .
5. ↑ Toxicological assessment of p-chlorobenzotrichloride (PDF) at the professional association raw materials and chemical industry (BG RCI), accessed on August 22, 2012.
6. ↑ Toxicological assessment of o-chlorobenzotrichloride (PDF) at the professional association raw materials and chemical industry (BG RCI), accessed on August 22, 2012.