1-Chloronaphthalene
- α -chloronaphthalene
- Monochloronaphthalene
- 1- chloronaphthalene
Colorless liquid
Liquid
1.19 g · cm -3 ( 20 ° C)
-6 ° C
259 ° C
0.05 mbar ( 20 ° C)
Slightly soluble in water
1.6326 (20 ° C)
Attention
1540 mg · kg -1 ( LD50, rat, oral)
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1- chloronaphthalene is a chlorinated derivative of naphthalene and one of the chlorinated aromatic compounds.
Production and representation
1- chloronaphthalene is directly obtained by chlorination of naphthalene, which besides the two monochlorinated isomeric compounds 1 -chloronaphthalene and 2- chloronaphthalene even more highly substituted derivatives such as dichloro- and Trichlornaphthaline arise.
Use
1- chloronaphthalene was used until the 1970s as a common solvent for oils, fats, and DDT. It is also used for determining the refractive index of crystals. 1- chloronaphthalene was used from the 1920s to the 1970s in a mixture with higher chlorinated chloronaphthalenes in wood preservatives. They set up in the 1950s is the most important synthetic compounds with fungicidal and insecticidal properties, but were displaced by pentachlorophenol ( PCP).