2050-69-3

Basic information

• Product Name: 1,2-DICHLORONAPHTHALENE
• Synonyms: 1,2-dichloro-naphthalen;Naphthalene, 1,2-dichloro-;naphthalene,1,4-dichloro-;1,2-DICHLORONAPHTHALENE;PCN-3
• CAS NO: 2050-69-3
• Molecular Formula: C10H6Cl2
• Molecular Weight: 197.06
• EINECS: 218-097-5
• Mol File: 2050-69-3.mol
• Article Data: 4

Chemical Properties

• Melting Point: 36°C
• Boiling Point: 302.76°C (rough estimate)
• Flash Point: 141.555 °C
• Appearance: /
• Density: 1.3147
• Vapor Pressure: 0.00229mmHg at 25°C
• Refractive Index: 1.5338
• CAS DataBase Reference: 1,2-DICHLORONAPHTHALENE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-DICHLORONAPHTHALENE(2050-69-3)
• EPA Substance Registry System: 1,2-DICHLORONAPHTHALENE(2050-69-3)

Safety Data

• Hazardous Substances Data: 2050-69-3(Hazardous Substances Data)

Usage

General Description

1,2-Dichloronaphthalene is a toxic, colorless organic compound that is primarily used as a pesticide, insecticide, and moth repellent. It is formed by the chlorination of naphthalene and is commonly found in mothballs and other insect repellent products. 1,2-Dichloronaphthalene is known to have harmful effects on human health, including respiratory tract irritation, liver and kidney damage, and potential carcinogenic properties. Due to its toxic nature, it is important to handle and dispose of 1,2-Dichloronaphthalene carefully and according to safety guidelines.

InChI:InChI=1/C10H6Cl2/c11-9-6-5-7-3-1-2-4-8(7)10(9)12/h1-6H

Upstream product

• 2065-70-5 2,6-dichloronaphthalene 
• 633-99-8 1-chloro-2-naphthol 
• 16452-11-2 1-chloro-2-aminonaphthalene 
• 61572-63-2 2-diazonaphthalene-1-sulphonic acid 
• 606-57-5 1-nitro-2-naphthylamine 
• 865-47-4 potassium tert-butylate 
• 74925-45-4 1-chloro-3,4-benzo-6,6-dichlorobicyclo<3.1.0>hexane 
• 10026-13-8 phosphorus pentachloride 
• 135-19-3 β-naphthol 
• 91-20-3 naphthalene 
• 7782-50-5 chlorine 
• 7647-01-0 hydrogenchloride 
• 7732-18-5 water 
• 20020-02-4 1,2,3,4-tetrachloronaphthalene 

Relevant articles and documents

Formation of polychlorinated naphthalenes on fly ash

During the oxidative degradation of carbonaceous material on fly ash, besides PCDD/F, PCPh, PCBz, PCB, polychlorinated naphthalenes (PCN or Cl(x)N) are formed. Thermal experiments were carried out with fly ash from a municipal waste incinerator at 300°C and reaction times of 0.5 h up to 4 h. For the study an analytical method using GC/MS was developed similar to that, used in dioxin-analysis. Isomer specific identification of chloronaphthalenes formed on fly ash was realized by comparison of Cl(x)N from technical PCN- mixtures (Halowax). For quantification of the PCN formed, 13C- labelled PCB-standards were used as internal standards because no 13C- labelled PCN- compounds were available. Both, technical PCN-mixtures and PCN formed on fly ash show a characteristic pattern of Cl(x)N-congeners according to their difference in formation. Cl2N - Cl3N were formed most and Cl1N - Cl3N were also found in the gas phase in high amounts. A single isomer 1,2,3,5,6,7-Cl6N, known as a strongly bioaccumulating and toxic PCN, is formed in higher amounts together with 1,2,3,4,6,7-Cl6N.

Purification of N-methylpyrrolidone

Phenol is extracted with a chlorinated aromatic extractant, such as p-dichlorobenzene, from an aqueous mixture containing phenol and N-methylpyrrolidone. In an embodiment of this invention the purified N-methylpyrrolidone is recycled for use in a poly(phenylene sulfide) polymerization process.