37680-69-6

Basic information

• Product Name: 3,3',4-TRICHLOROBIPHENYL
• Synonyms: PCB 35;BZNO 35;3,3',4-TRICHLOROBIPHENYL;PCB NO 35;3,3',4-TRICB 100 UG/ML IN ISOOCTANE
• CAS NO: 37680-69-6
• Molecular Formula: C₁₂H₇Cl₃
• Molecular Weight: 257.54
• Mol File: 37680-69-6.mol
• Article Data: 1

Chemical Properties

• Melting Point: 87°C
• Boiling Point: 334.36°C (rough estimate)
• Appearance: /
• Density: 1.3510 (rough estimate)
• Refractive Index: 1.6040 (rough estimate)
• CAS DataBase Reference: 3,3',4-TRICHLOROBIPHENYL(CAS DataBase Reference)
• NIST Chemistry Reference: 3,3',4-TRICHLOROBIPHENYL(37680-69-6)
• EPA Substance Registry System: 3,3',4-TRICHLOROBIPHENYL(37680-69-6)

Safety Data

• Hazardous Substances Data: 37680-69-6(Hazardous Substances Data)

Usage

General Description

3,3',4-Trichlorobiphenyl, also known as PCB 37, is a chlorinated biphenyl compound that belongs to the family of polychlorinated biphenyls (PCBs). It is a persistent organic pollutant with potential toxic effects on human health and the environment. 3,3',4-Trichlorobiphenyl has been identified as a potential endocrine disruptor and has been found to accumulate in the fatty tissues of animals, leading to potential bioaccumulation and biomagnification in the food chain. It is also known to have detrimental effects on aquatic organisms and has been classified as a probable human carcinogen by the International Agency for Research on Cancer (IARC). Due to its harmful effects, the production and use of 3,3',4-Trichlorobiphenyl have been banned or heavily restricted in many countries.

Upstream product

• 32598-13-3 33'44'-tetrachlorinated biphenyl 

Relevant articles and documents

Relative resistance of positional isomers of polychlorinated biphenyls toward reductive dechlorination by zerovalent iron in subcritical water

Relative resistance of positional isomers within the same homologue of polychlorinated biphenyls (PCBs) was studied by comparing the reduction efficiencies (REs) of these isomers by 100-mesh zerovalent iron in subcritical water at 250 °C and 10 MPa. The REs for meta and para isomers were found to be significantly higher than that of the ortho's. These results revealed that variation in relative resistance of the positional isomers to reductive dechlorination does exist, and the order increases from para to meta to ortho substituents. This variation in relative resistance to reduction is correlated with the lowest unoccupied molecular orbital (LUMO) energy of individual PCB congeners. A model based on the empirical relative resistance of the PCBs to reductive dechlorination is developed, and an equation is established to predict the efficiency of a reductive dechlorination system that employs zerovalent iron and pressurized hot water. Relative resistance of positional isomers within the same homologue of polychlorinated biphenyls (PCBs) was studied by comparing the reduction efficiencies (REs) of these isomers by 100-mesh zerovalent iron in subcritical water at 250°C and 10 MPa. The REs for meta and para isomers were found to be significantly higher than that of the ortho's. These results revealed that variation in relative resistance of the positional isomers to reductive dechlorination does exist, and the order increases from para to meta to ortho substituents. This variation in relative resistance to reduction is correlated with the lowest unoccupied molecular orbital (LUMO) energy of individual PCB congeners. A model based on the empirical relative resistance of the PCBs to reductive dechlorination is developed, and an equation is established to predict the efficiency of a reductive dechlorination system that employs zerovalent iron and pressurized hot water.