2,2',5,5'-Tetrachlorobiphenyl
Synonyms: PCB 52, "2,5,2',5'-Tetrachlorobiphenyl", "TCBP", "2,2',5,5'-TCB", "2,3',5,6'-Tetrachlorobiphenyl", "PCB-52", "2,2',5,5'-Tetrachloro-1,1'-biphenyl", "PCB No 52", "1,4-dichloro-2-(2,5-dichlorophenyl)benzene", "PCB No. 52"
Source: 2,2',5,5'-tetrachlorobiphenyl is a member of the polychlorinated biphenyls (PCBs), a group of industrial chemicals used as dielectrics, coolants and lubricants in electrical equipment. PCBs contaminate water by leaching from landfills or other waste deposits.
Identifiers:
IUPAC Name: 1,4-dichloro-2-(2,5-dichlorophenyl)benzene
CAS Number: 35693-99-3
PubChem ID: 37248
InChiKey: HCWZEPKLWVAEOV-UHFFFAOYSA-N
Canonical SMILES: C1=CC(=C(C=C1Cl)C2=C(C=CC(=C2)Cl)Cl)Cl
Structural Properties:
Molecular Formula: C12H6Cl4
Molecular Weight: 292,000
Pharmacophore Features:
Number of bond donors: 0
Number of bond acceptors: 0
Number of atoms different from hydrogen: 16
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Evidence Supporting This Chemical as an Emerging Contaminant
Mailler, R., Gasperi, J., Patureau, D., Vulliet, E., Delgenes, N., Danel, A., ... & Chebbo, G. (2017). Fate of emerging and priority micropollutants during the sewage sludge treatment: Case study of Paris conurbation. Part 1: Contamination of the different types of sewage sludge. Waste management, 59, 379-393.