The CAS registry number of 4-Chlorobenzyl chloride is 104-83-6. Its EINECS registry number is 203-242-7. The IUPAC name is 1-chloro-4-(chloromethyl)benzene. In addition, the molecular formula is C₇H₆Cl₂ and the molecular weight is 161.03. It is also called (4-chlorophenyl)methyl chloride. What's more, it is a kind of colorless to light yellow liquid and should be stored in a cool and dry place.

Physical properties about this chemical are: (1)ACD/LogP: 3.08; (2)ACD/LogD (pH 5.5): 3.08; (3)ACD/LogD (pH 7.4): 3.08; (4)ACD/BCF (pH 5.5): 129.51; (5)ACD/BCF (pH 7.4): 129.51; (6)ACD/KOC (pH 5.5): 1131.33; (7)ACD/KOC (pH 7.4): 1131.33; (8)#Freely Rotating Bonds: 1; (9)Polar Surface Area: 0 Ų; (10)Index of Refraction: 1.546; (11)Molar Refractivity: 40.91 cm³; (12)Molar Volume: 129 cm³; (13)Polarizability: 16.21 ×10^-24cm³; (14)Surface Tension: 37 dyne/cm; (15)Density: 1.247 g/cm³; (16)Flash Point: 87.3 °C; (17)Enthalpy of Vaporization: 44.08 kJ/mol; (18)Boiling Point: 223 °C at 760 mmHg; (19)Vapour Pressure: 0.147 mmHg at 25°C.

Preparation of 4-Chlorobenzyl chloride: it can be prepared by (4-chloro-phenyl)-methanol. This reaction will need reagents CCl₄ and 1 percent cross-linked polymer (containing 2.50 mmol of phosphine/g). The reaction time is 3 hours by heating. The yield is about 100%.

Uses of 4-Chlorobenzyl chloride: it can be used as organic synthesis intermediates, and used in pharmaceutical industry and dyestuff industry. In addition, it can react with 1,4-di-tert-butyl-benzene to get 2,5-di-tert-Butyl-4'-chlorodiphenylmethane. This reaction will need reagent TiCl₄ and solvent CHCl₃. The yield is about 80% at reaction temperature of 20-25 °C.

When you are using this chemical, please be cautious about it as the following:
This chemical is harmful by inhalation, in contact with skin and if swallowed. It can cause burns. And it is toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. During using it, wear suitable protective clothing, gloves and eye/face protection. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. And in case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.). In addition, you can not empty it into drains and release it to the environment. You can refer to special instructions safety data sheet.

You can still convert the following datas into molecular structure:
(1)SMILES: ClCc1ccc(Cl)cc1
(2)InChI: InChI=1/C7H6Cl2/c8-5-6-1-3-7(9)4-2-6/h1-4H,5H2
(3)InChIKey: JQZAEUFPPSRDOP-UHFFFAOYAV

The toxicity data is as follows: