37680-65-2

Basic information

• Product Name: 2,2',5-TRICHLOROBIPHENYL
• Synonyms: 2,2',5-TRICHLOROBIPHENYL;BZ NO 18;2,5,2'-CB;CB-18;2.2'.5-Trichlorobiphenyl 25mg [37680-65-2];2,2',5-TRICB UNLABELED CERTIFIED STANDARD;2,2',5-Trichlorobiphenyl-d5;CB 18 (chlorocarbon)
• CAS NO: 37680-65-2
• Molecular Formula: C₁₂H₇Cl₃
• Molecular Weight: 257.54
• Mol File: 37680-65-2.mol
• Article Data: 3

Chemical Properties

• Melting Point: 44℃
• Boiling Point: 334.36°C (rough estimate)
• Flash Point: 216.1°C
• Appearance: /
• Density: 1.3510 (rough estimate)
• Refractive Index: 1.6040 (rough estimate)
• Storage Temp.: room temp
• Water Solubility: 0.64mg/L(25 oC)
• CAS DataBase Reference: 2,2',5-TRICHLOROBIPHENYL(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2',5-TRICHLOROBIPHENYL(37680-65-2)
• EPA Substance Registry System: 2,2',5-TRICHLOROBIPHENYL(37680-65-2)

Safety Data

• Hazard Codes: N,Xn
• Statements: 33-50/53
• Safety Statements: 35-60-61
• RIDADR: UN 3432 9/PG 2
• RTECS: DV8820000
• Hazardous Substances Data: 37680-65-2(Hazardous Substances Data)

Usage

Uses

2,2'',5-Trichlorobiphenyl is a polychlorinated biphenyl (PCB) congeners.

Safety Profile

Moderately toxic byintraperitoneal route. When heated to decomposition itemits toxic vapors of Clí.

Upstream product

• 41464-39-5 2,2',3,5'-Tetrachlorobiphenyl 
• 35693-99-3 2,2',5,5'-Tetrachlorobiphenyl 

Relevant articles and documents

METHOD FOR SEPARATING AND CLEANING UP POLYHALOGENATED BIPHENYLS

The method for separating and cleaning up polyhalogenated biphenyls (PHBs) is characterized by comprising the following three steps: (1) the step of bringing a sample containing PHBs into contact with a fibrous activated carbon; (2) the step of washing the fibrous activated carbon with hexanes; and (3) the step of eluting PHBs from the fibrous activated carbon.

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.