1,4-Dichloronaphthalene
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1,4-Dichloronaphthalene
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CAS No:
1825-31-6
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Formula:
C10H6Cl2
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Chemical Name:
1,4-Dichloronaphthalene
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Synonyms:
Naphthalene,1,4-dichloro-;1,4-Dichloronaphthalene;PCN 5;NSC 90291
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CAS No:
1,4-Dichloronaphthalene Basic Attributes
197.06
197.06
217-365-9
91H687K062
90291
DTXSID6061999
2903999090
Characteristics
0
4.57
1.2997
67.5 °C
288 °C
137.6±13.4 °C
1.6228
2.63e-06 M
0.00 mmHg
5.80e-12 cm3/molecule*sec
Safety Information
P264, P270, P273, P280, P301+P312, P305+P351+P338, P310, P330, P391, P501
H302
|Danger|H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]|P264, P270, P273, P280, P301+P312, P305+P351+P338, P310, P330, P391, and P501|Aggregated GHS information provided by 39 companies from 1 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
1,4-Dichloronaphthalene Use and Manufacturing
From the sodium naphthylamine-4-sulfonate through the following steps. Dissolve the sodium naphthylamine-4-sulfonate in water, add concentrated hydrochloric acid, add sodium nitrite at 0°C for diazotization, then add the cuprous chloride and hydrochloric acid solution to the diazonium salt, heat to replace, cool, Drain, wash with water, dry below 100℃, slowly add the dried sodium 1-chloronaphthalene-4-sulfonate to phosphorus pentachloride and reflux for 2h, pour it into crushed ice and drain it, wash with water, in the air Drying; adding 1-chloronaphthalene-4-sulfonyl chloride to phosphorus pentachloride at one time, heating to 160-165°C for 4 hours, pour into crushed ice until neutral, finally vacuum distillation, ethanol recrystallization to obtain the finished product.
Used as an intermediate in organic synthesis.
Naphthalene, 1,4-dichloro-: INACTIVE|SP - indicates a substance that is identified in a proposed Significant New Use Rule.