150224-18-3

Basic information

• Product Name: 1,2,3,5,6-pentachloronaphthalene
• Synonyms: Naphthalene, 1,2,3,5,6-pentachloro; naphthalene, 1,2,3,5,6-pentachloro-
• CAS NO: 150224-18-3
• Molecular Formula: C₁₀H₃Cl₅
• Molecular Weight: 300.3958
• Mol File: 150224-18-3.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 378.1°C at 760 mmHg
• Flash Point: 189.8°C
• Density: 1.638g/cm³
• Vapor Pressure: 1.4E-05mmHg at 25°C
• Refractive Index: 1.671
• CAS DataBase Reference: 1,2,3,5,6-pentachloronaphthalene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2,3,5,6-pentachloronaphthalene(150224-18-3)
• EPA Substance Registry System: 1,2,3,5,6-pentachloronaphthalene(150224-18-3)

Safety Data

• Hazardous Substances Data: 150224-18-3(Hazardous Substances Data)

Usage

Molecular weight

326.48 g/mol

Physical state

Solid

Color

Pale yellow to light brown

Melting point

108-111°C

Boiling point

435-440°C

Solubility

Insoluble in water, soluble in organic solvents such as benzene, toluene, and xylene

Persistence

Highly persistent in the environment

Bioaccumulation

High potential for bioaccumulation in the food chain

Toxicity

Highly toxic to humans and the environment

Health effects

Reproductive and developmental issues, various forms of cancer

Environmental impact

A potent environmental pollutant

Industrial production

Byproduct of industrial processes, particularly in the production of chlorine and chlorinated solvents

Regulation

Production and use are strictly regulated in many countries due to its status as a persistent organic pollutant (POP)

Upstream product

• 58877-88-6 1,2,3,4,6,7-hexachloronaphthalene 
• 191-07-1 Coronene 
• 227-09-8 1,2:8,9-dibenzopentacene 
• 191-24-2 Benzo[ghi]perylene 
• 198-55-0 PERYLENE 
• 190-26-1 ovalene 

Relevant articles and documents

Emission factors and importance of PCDD/Fs, PCBs, PCNs, PAHs and PM 10 from the domestic burning of coal and wood in the U.K.

This paper presents emission factors (EFs) derived for a range of persistent organic pollutants (POPs) when coal and wood were subject to controlled burning experiments, designed to simulate domestic burning for space heating. A wide range of POPs were emitted, with emissions from coal being higher than those from wood. Highest EFs were obtained for particulate matter, PM10, (～ 10 g/kg fuel) and polycyclic aromatic hydrocarbons (～ 100 mg/ kg fuel for ΣPAHs). For chlorinated compounds, EFs were highest for polychlorinated biphenyls (PCBs), with polychlorinated naphthalenes (PCNs), dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) being less abundant. EFs were on the order of 1000 ng/kg fuel for ΣPCBs, 100s ng/ kg fuel for ΣPCNs and 100 ng/kg fuel for ΣPCDD/Fs. The study confirmed that mono- to trichlorinated dibenzofurans, Cl1,2,3DFs, were strong indicators of low temperature combustion processes, such as the domestic burning of coal and wood. It is concluded that numerous PCB and PCN congeners are routinely formed during the combustion of solid fuels. However, their combined emissions from the domestic burning of coal and wood would contribute only a few percent to annual U.K. emission estimates. Emissions of PAHs and PM 10 were major contributors to U.K. national emission inventories. Major emissions were found from the domestic burning for Cl1,2,3DFs, while the contribution of PCDD/F-ΣTEQ to total U.K. emissions was minor.

Selective reduction of polychlorinated naphthalenes with zinc

Reduction of polychlorinated naphthalenes with zinc in acetic acid requires the presence of three chlorine atoms in positions 1, 2, and 8, the chlorine atom in position 1 being reduced. The relative rates of reduction of various polychloronaphthalenes were measured.