9630. 1,2,3-Trichlorobenzene

Nomenclature

CAS number: 87-61-6
vic-Trichlorobenzene.
C6H3Cl3; mol wt 181.45.
C 39.72%, H 1.67%, Cl 58.62%.

Description and references

Prepared from 3,4,5-trichloroaniline by diazotization: Cohen, Hartley, J. Chem. Soc. 87, 1365 (1905); Holleman, Rec. Trav. Chim. 37, 196 (1918); from 2,3,4-trichloroaniline by diazotization: Dadien et al., Monatsh. Chem. 61, 431 (1932); from 2,3,4-trichloroaniline by treatment with ethyl nitrite: Beilstein, Kurbatow, Ann. 192, 234 (1878).

Chemical structure

Properties

Platelets from alc, d 1.69. mp 52.6°. bp 221°. nD19 1.5776. Flash pt 113°C (235.4°F). Volatile with steam. Insol in water. Sparingly sol in alc. Freely sol in benzene, carbon disulfide.

Caution

Irritating to eyes, mucous membranes.

Use

A commercial grade (mixture of isomeric trichlorobenzenes) is used to combat termites.