2-Chloronaphthalene

2-Chloronaphthalene is an organochlorine chemical compound, a chlorinated derivative of naphthalene. Its chemical formula is C
₁₀H
₇Cl.^[1][2] The compound is an isomer for 1-chloronaphthalene.^[3]

2-Chloronaphthalene

Names
Preferred IUPAC name 2-Chloronaphthalene
Other names β-Chloronaphthalene, 2-Chloro-naphthalene
Identifiers
CAS Number	91-58-7
3D model (JSmol)	Interactive image
ChemSpider	6789
ECHA InfoCard	100.001.891
EC Number	202-079-9
PubChem CID	7056
UNII	49O81U3ITI
CompTox Dashboard (EPA)	DTXSID8023971
InChI InChI=1/C10H7Cl/c11-10-6-5-8-3-1-2-4-9(8)7-10/h1-7 Key: CGYGETOMCSJHJU-UHFFFAOYSA-N
SMILES ClC1=CC=C2C=CC=CC2=C1
Properties
Chemical formula	C10H7Cl
Molar mass	162.62 g·mol−1
Appearance	Off-white crystalline powder
Density	1.2±0.1 g/cm3
Melting point	59 °C (138 °F; 332 K)
Boiling point	255 °C (491 °F; 528 K)
Solubility in water	insoluble
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P280
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

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]

Properties

2-Chloronaphthalene is a combustible, off-white odorless solid, which is practically insoluble in water. The compound may react with strong oxidizing agents.^[5]

Applications

2-Chloronaphthalene can be used for the production of fullerenes.^[6]

See also

• 1-Fluoronaphthalene
• 1-Bromonaphthalene