Chemistry informtion about  Bis(chloromethyl)benzene (CAS NO.28347-13-9) is:
Synonyms: Bis(Chloromethyl)Benzene ; Α,Α'-Dichloroxylene ; Xylylene Dichloride ; Alpha,Alpha'-Dichloroxylene
MF: C₈H₈Cl₂
MW: 175.05512
EINECS: 248-982-1 
Density: 1.208 g/cm³
Flash Point: 114.1 °C
Boiling Point: 239.5 °C at 760 mmHg
Vapour Pressure: 0.0618 mmHg at 25°C 
Enthalpy of Vaporization: 45.71 kJ/mol
Following is the molecular structure of  Bis(chloromethyl)benzene (CAS NO.28347-13-9) is:

 Bis(chloromethyl)benzene (CAS NO.28347-13-9) is used as a solvent and in the printing, rubber, and leather industries. It is used as a feedstock in the production of terephthalic acid, which is a monomer used in the production of polymers. It is also used as a cleaning agent for steel and for silicon wafers and chips, a pesticide, a thinner for paint, and in paints and varnishes. It may be substituted for toluene to thin lacquers where slower drying is desired. It is found in small amounts in airplane fuel and gasoline. In animal studies it is often swabbed on the ears of rabbits to facilitate blood flow and collection, although the area must subsequently be cleansed with alcohol to prevent inflammation. In histology, it is also used for clearing the tissues following dehydration in preparation for paraffin wax infiltration. It is also used after sections have been stained to make them hydrophobic so that a coverslip may be applied with a resin in solvent.

EPA Extremely Hazardous Substances List.

Poison by inhalation. Moderately toxic by ingestion. When heated to decomposition it emits toxic fumes of Cl⁻. See CHLORINATED HYDROCARBONS, AROMATIC.
RIDADR: 2928
HazardClass: 6.1(a)
PackingGroup: II