4-Chlorobenzyl cyanide

Synonym(s):4-Chlorobenzyl cyanide

CAS NO.：140-53-4
Empirical Formula: C8H6ClN
Molecular Weight: 151.59
MDL number: MFCD00001918
EINECS: 205-418-9
SAFETY DATA SHEET (SDS)
Update Date: 2024-08-17 21:30:02

What is 4-Chlorobenzyl cyanide?

Chemical properties

clear colorless to yellowish liquid after melting. Soluble in acetone and ethanol.

The Uses of 4-Chlorobenzyl cyanide

4-Chlorobenzyl cyanide is an intermediate for the preparation of 3-methyl-2-(4-chlorophenyl)butyric acid, which can be used to prepare pyrethroid insecticides such as fenvalerate and deltamethrin, and can be used in medicine Industrial preparation of pyrimethamine.

Definition

ChEBI: 4-Chlorobenzyl cyanide is a nitrile that is acetonitrile in which one of the hydrogens has been replaced by a p-chlorophenyl group. It is a member of monochlorobenzenes and a nitrile. It derives from an acetonitrile.

Preparation

4-Chlorobenzyl cyanide is obtained by the reaction of 4-Chlorobenzyl chloride with sodium cyanide. Add 4-Chlorobenzyl chloride and Benzyldodecyldimethylammonium bromide into the reaction pot, heat to 100°C, slowly add sodium cyanide aqueous solution, and react at 100-104°C for 5h (add sodium cyanide for 3h, keep warm for 2h). Then add water to dissolve sodium chloride, and separate the water layer to obtain the crude benzyl chloride cyanide, which is distilled under reduced pressure to collect 160 (2.66kPa) fractions to obtain the finished product of 4-Chlorobenzyl cyanide. The yield is above 81%.

Properties of 4-Chlorobenzyl cyanide

Melting point:	25-28 °C(lit.)
Boiling point:	265-267 °C(lit.)
Density	1.19 g/mL at 20 °C(lit.)
refractive index	n20/D 1.543
Flash point:	>230 °F
storage temp.	Sealed in dry,Room Temperature
solubility	0.3g/l
form	Liquid After Melting
color	Clear colorless to yellow
BRN	971171
Exposure limits	NIOSH: IDLH 25 mg/m3
CAS DataBase Reference	140-53-4(CAS DataBase Reference)
NIST Chemistry Reference	Benzeneacetonitrile, 4-chloro-(140-53-4)
EPA Substance Registry System	Benzeneacetonitrile, 4-chloro- (140-53-4)

Safety information for 4-Chlorobenzyl cyanide

Signal word	Danger
Pictogram(s)	Skull and Crossbones Acute Toxicity GHS06
GHS Hazard Statements	H300:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.