1-Chloronaphthalene is an aromatic compound. It is a colorless, oily liquid which may be used to determine the refractive index of crystals by immersion.[1] The compound is an isomer to 2-chloronaphthalene.
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| Names | |
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| Preferred IUPAC name
1-Chloronaphthalene | |
| Identifiers | |
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3D model (JSmol) |
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| ChEMBL | |
| ChemSpider |
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| ECHA InfoCard | 100.001.789 
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PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| C10H7Cl | |
| Molar mass | 162.62 g·mol−1 |
| Melting point | −20 °C (−4 °F; 253 K) |
| Boiling point | 263 °C (505 °F; 536 K) |
| Hazards | |
| GHS labelling: | |
 
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| Warning | |
| H302, H410 | |
| P273 | |
| Flash point | 121 °C (250 °F; 394 K) |
| Safety data sheet (SDS) | Oxford MSDS |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
1-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.[2]
This toxic, nonpolar organochlorine compound is sometimes used as a powerful biocide, and is also known as Basileum. It occasionally serves as insecticide and fungicide in the timber floors of shipping containers, where it fulfills the same role as chlordane.
1-Chloronaphthalene was also used as a common solvent[3] for oils, fats and DDT until the 1970s. It is also used to determine the refractive index of crystals.
