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2-Chloronaphthalene structure
Chemical Name:
Molecular Formula:
Formula Weight:
MOL File:

2-Chloronaphthalene Properties

Melting point:
57-60 °C
Boiling point:
256 °C
vapor pressure 
0.40 at 59.0 °C (Verevkin, 2003)
refractive index 
Flash point:
125 °C
storage temp. 
Soluble in chloroform, carbon disulfide (Windholz et al., 1983), and many other halogenated liquid solvents (e.g., methylene chloride).
Crystalline Powder
White to almost white
Water Solubility 
Henry's Law Constant
3.31 x 10-4 atm?m3/mol at 25 °C (gas stripping-UV spectrophotometry, Shiu and Mackay, 1997)
CAS DataBase Reference
91-58-7(CAS DataBase Reference)
NIST Chemistry Reference
Naphthalene, 2-chloro-(91-58-7)
  • Risk and Safety Statements
Signal word  Danger
Hazard statements  H225-H301+H311+H331-H370
Precautionary statements  P210-P260-P280-P301+P310-P311
Hazard Codes  Xi,T,F
Risk Statements  36/37/38-39/23/24/25-23/24/25-11
Safety Statements  37/39-26-45-36/37-16-7
RIDADR  UN1230 3/PG 2
WGK Germany  3
RTECS  QJ2275000
HS Code  29039990
Toxicity Acute oral LD50 for rats 2,078 mg/kg, mice 886 mg/kg (quoted, RTECS, 1985).

2-Chloronaphthalene price More Price(2)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 40018 2-Chloronaphthalene solution certified reference material, 5000 μg/mL in methanol 91-58-7 40018 $44.6 2018-11-23 Buy
Sigma-Aldrich 48517 2-Chloronaphthalene for spectrophotometric det. of proline and thiophene, ≥99.0% 91-58-7 48517 $175 2018-11-23 Buy

2-Chloronaphthalene Chemical Properties,Uses,Production

Chemical Properties


Chemical Properties

The chlorinated naphthalenes in which one or more hydrogen atoms have been replaced by chlorine to form wax-like substances, beginning with monochloronaphthalene and going on to the octachlor derivatives. Their physical states vary from mobile liquids to waxysolids depending on the degree of chlorination; freezing/ melting points of the pure compounds range from 17C for 1-chloronaphthalene to 198C for 1,2,3,4- tetrachloronaphthalene. 1-Chloro-isomer: Hazard identification (based on NFPA-704 M Rating System): Health 2, flammability 1, reactivity 0. 2-Chloro-isomer:


Chlorinated naphthalenes were formerly used in the production of electric condensers, insulating electric condensers, electric cables, and wires; additive for high pressure lubricants.

General Description

Monoclinic plates or off-white crystalline powder. Melting point 59.5°C.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

2-Chloronaphthalene may react with strong oxidizing agents .

Fire Hazard

Flash point data for 2-Chloronaphthalene are not available. 2-Chloronaphthalene is probably combustible.

Potential Exposure

Industrial exposure from individual chlorinated naphthalenes is rarely encountered; rather it usually occurs from mixtures of two or more Chlorinated naphthalenes. Due to their stability, thermoplasticity, and nonflammability, these compounds enjoy wide industrial application. These compounds are used in the production of electric condensers; in the insulation of electric cables and wires; as additives to extreme pressure lubricants; as supports for storage batteries; and as a coating in foundry use. octachloro-: Used as a fireproof and waterproof additive and lubricant additive. Pentachloro-: Used in electric wire insulation and in additives to special lubricants. tetrachloro-: Used in electrical insulating materials and as an additive in cutting oils. trichloro-: Used in lubricants and in the manufacture of insulation for electrical wire. Because of the possible potentiation of the toxicity of higher Chlorinated naphthalenes by ethanol and carbon tetrachloride, individuals who ingest enough alcohol to result in liver dysfunction would be a special group at risk. Individuals, e.g., analytical and synthetic chemists, mechanics and cleaners, who are routinely exposed to carbon tetrachloride or other hepatotoxic chemicals would also be at a greater risk than a population without such exposure. Individuals involved in the manufacture, utilization, or disposal of polychlorinated naphthalenes would be expected to have higher levels of exposure than the general population.

Environmental Fate

Biological. Reported biodegradation products include 8-chloro-1,2-dihydro-1,2- dihydroxynaphthalene and 3-chlorosalicylic acid (Callahan et al., 1979). When 2-chloronaphthalene was statically incubated in the dark at 25 °C with yeast extract and settled domestic wastewater inoculum, complete biodegradation was observed after 7 d (Tabak et al., 1981).
Chemical/Physical. The hydrolysis rate constant for 2-chloronaphthalene at pH 7 and 25 °C was determined to be 9.5 x 10-6/h, resulting in a half-life of 8.3 yr (Ellington et al., 1988). At 85.5 °C, hydrolysis half-lives of 255, 156, and 244 d were reported at pH values of 2.93, 7.10, and 9.58, respectively (Ellington et al., 1977).
At influent concentrations of 1.0, 0.1, 0.01, and 0.001 mg/L, the GAC adsorption capacities were 280, 96, 33, and 11 mg/g, respectively (Dobbs and Cohen, 1980).


UN3082 Environmentally hazardous substances, liquid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.

Purification Methods

Distil 2-chloronaphthalene in a vacuum, then crystallise it from 25% EtOH/water, then dry it under vacuum (see also the 1-isomer above). [Beilstein 5 H 541, 5 I 262, 5 II 445, 5 III 1573, 5 IV 1660.]


All are incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Keep away from heat. Penta- is also incompatible with acids, alkalis.

Waste Disposal

High-temperature incineration with flue gas scrubbing. Incineration, preferably after mixing with another combustible fuel. Care must be exercised to assure complete combustion to prevent the formation of phosgene. An acid scrubber is necessary to remove the halo acids produced.

2-Chloronaphthalene Preparation Products And Raw materials

Raw materials

Preparation Products

2-Chloronaphthalene Suppliers

Global( 101)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Capot Chemical Co.,Ltd.
+86 (0)571-855 867 18
+86 (0)571-858 647 95 China 19918 60
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32447 55
career henan chemical co
+86-371-86658258 CHINA 30001 58
Chongqing Chemdad Co., Ltd
+86-13650506873 CHINA 35440 58
Henan tianfu chemical co. LTD
0371-55170695 CHINA 20538 58
Suzhou Shanyang Pharmaceutical Technology Co., 86-0512-88819101 、0512-63268889,13862023007
86-0512-63268889 China 368 58
J & K SCIENTIFIC LTD. 010-82848833- ;010-82848833
86-10-82849933;; China 96506 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40269 62
TCI (Shanghai) Development Co., Ltd. 021-67121386 / 800-988-0390
021-67121385 China 24555 81
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 China 44025 61

View Lastest Price from 2-Chloronaphthalene manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-08-30 2-Chloronaphthalene
US $1.00 / KG 1KG 98% 200kg career henan chemical co

2-Chloronaphthalene Spectrum

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