2-Chloronaphthalene is an organochlorine chemical compound, a chlorinated derivative of naphthalene.

[1][2] The compound is an isomer for 1-chloronaphthalene.

[3] 2-Chloronaphthalene is obtained directly by chlorination of naphthalene, with the formation of more highly substituted derivatives such as dichloro- and trichloronaphthalenes, in addition to the two monochlorinated isomeric compounds: 1-chloronaphthalene and 2-chloronaphthalene.

[4] 2-Chloronaphthalene is a combustible, off-white odorless solid, which is practically insoluble in water.

The compound may react with strong oxidizing agents.