33979-03-2

Basic information

• Product Name: 2,2',4,4',6,6'-HEXACHLOROBIPHENYL
• Synonyms: BZ NO 155;2,2',4,4',6,6'-HEXACHLOROBIPHENYL;1,1'-Biphenyl, 2,2',4,4',6,6'-hexachloro-;2,2',4,4',6,6'-Hexachloro-1,1'-biphenyl;2,2',4,4',6,6'-Hexachlorodiphenyl;2,2’,4,4’,6,6’-hcb;2,2’,4,4’,6,6’-hexachloro-1,1’-biphenyl;2,2’,4,4’,6,6’-hexachloro-1’-biphenyl
• CAS NO: 33979-03-2
• Molecular Formula: C₁₂H₄Cl₆
• Molecular Weight: 360.88
• EINECS: 251-773-8
• Mol File: 33979-03-2.mol

Chemical Properties

• Melting Point: 112.5°C
• Boiling Point: 446.99°C (rough estimate)
• Flash Point: 170.5 °C
• Appearance: /
• Density: 1.5940 (rough estimate)
• Refractive Index: 1.6270 (rough estimate)
• Water Solubility: 2.266ug/L(25 oC)
• CAS DataBase Reference: 2,2',4,4',6,6'-HEXACHLOROBIPHENYL(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2',4,4',6,6'-HEXACHLOROBIPHENYL(33979-03-2)
• EPA Substance Registry System: 2,2',4,4',6,6'-HEXACHLOROBIPHENYL(33979-03-2)

Safety Data

• Hazardous Substances Data: 33979-03-2(Hazardous Substances Data)

Usage

Uses

2,2'',4,4'',6,6''-Hexachlorobiphenyl is a polychlorinated biphenyl (PCB) congeners.

Definition

ChEBI: A hexachlorobiphenyl that is biphenyl in which both of the phenyl rings are substituted at positons 2, 4, and 6 by chlorines.

Hazard

A poison.

Upstream product

• 6324-50-1 1,3,5-trichloro-2-iodobenzene 
• 108-70-3 1,3,5-trichlorobenzene 
• 634-93-5 2,4,6-trichloroaniline 
• 618-62-2 3,5-dichloro-1-nitrobenzene 
• 25179-49-1 1,2-bis(3,5-dichlorophenyl)diazene 
• 863098-32-2 1-(4-(bromoethynyl)phenyl)-ethan-1-one 
• 73852-18-3 (2,4,6-trichlorophenyl)boronic acid 
• 87483-30-5 N,N′-bis-(3,5-dichlorophenyl)hydrazine 
• 67-56-1 methanol 
• 104891-98-7 3-Amino-3-(2,4,6-trichlor-phenylazo)propensaeuremethylester 
• 46860-72-4 2,6,2',6'-tetrachloro-benzidine 

Downstream Products

• 64560-17-4 1,3,7,9-tetrachlorodibenzofuran 

Relevant articles and documents

A Suzuki-type cross-coupling reaction of arylacetylene halides with arylboronic acids

A PdCl2-catalyzed direct alkynylation of arylboronic acids to give diarylacetylenes is described. The optimal conditions using PdCl 2 as catalyst, MeOH-PhMe-H2O as solvent and K 2CO3 as base effectively suppressed the formation of homo-coupling product and afforded moderate to good yield of the desired unsymmetrical coupling product. This reaction represents a Suzuki-type sp 2(C-B)-sp(C-X) cross-coupling. Copyright

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.

Physical, spectral and chromatographic properties of all 209 individual PCB congeners

Through the use of two capillary GC columns: 40% octadecyl/ 15% phenyl methyl siloxane and 50% phenyl methyl siloxane, it was possible to separate 201 PCB congeners with only four unresolved pairs. The data compiled in this study for all 209 congeners will aid in the identification of selected individual components of these environmental pollutants. The use of this data also presents the opportunity for the improved quantification of the commercial PCB formulations. -from Authors

27. Magnetic-Field Effect in Aromatic Dediazoniation

Homolytic dediazoniation of tribromo- and trichloro-benzenediazonium tetrafluoroborates in highly ionizing, low-nucleophilicity solvents (trifluoroethanol and trifluoromethanesulfonic acid (TfOH)) exhibits a strong magnetic-field dependency of dediazoniation products; a more facile singlet-to-triplet intersystem crossing results in increased radical-escape products at higher magnetic fields.

New Azoolefines and their Acidic Cleavage to Aryldiimines

3-Amino-1-aryl-3',3'-dimethyl-pyrazolin-4-spiro-2'-oxiran-5-ones (3a-c) undergo ring opening with methoxide forming methyl 3-amino-3-arylazo-propenoates (5a-c). 5a-c are cleaved under acidic conditions.The main products of the cleavage of 5c with methanolic hydrochloric acid are nitrogen, 2,4,6-trichloro-benzene (6), 2,4,6-trichloro-aniline (9) and 2,4,6-trichloro-phenylhydrazine (10).Intermediates of the cleavage of 5 are aryldiimines trapped with benzaldehyde as the corresponding benzhydrazides (12a,b).