Polychlorinated biphenyl - Wikipedia
The coplanar group members have a fairly rigid structure, with their two phenyl rings in the same plane. It renders their structure similar to polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans, and allows them to act like PCDDs, as an agonist of the aryl hydrocarbon receptor (AhR) in organisms.
2,2',3,3',4-Pentachlorobiphenyl | C12H5Cl5 | CID 40470 - PubChem
2,2',3,3',4-Pentachlorobiphenyl | C12H5Cl5 | CID 40470 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
Physical and chemical properties of the Aroclors are summarized in Table 4-3. An important property of PCBs is their general inertness; they resist both acids and alkalis and have thermal stability.
2,2',3,3',4,4'-Hexachlorobiphenyl | C12H4Cl6 - PubChem
Aroclor 1260 is a commercial mixture of PCBs with an average chlorine content of 60%. It is composed of mainly pentachlorobiphenyls (43.35%) and hexachlorobuphenyls (38.54%) and also includes mono-, bi-, tri, tetra-, hexa-, octa- and nonachlorinated homologs.
3,3',5-Trichlorobiphenyl | C12H7Cl3 | CID 38037 - PubChem
Aroclor 1016 is a commercial mixture of PCBs with an average chlorine content of 41.5%. It is composed of mainly trichlorobiphenyls (54.67%), and also includes mono-, bi-, tetra-, and pentachlorinated homologs.
Aroclor - an overview | ScienceDirect Topics
The first two digits of the name of each Aroclor refer to the number of carbon atoms (12 in the biphenyl skeleton) and the last two digits represent the chlorine weight percentage in the mixture (e.g., 60% in Aroclor 1260) (the exception is Aroclor 1016, which has a biphenyl structure and is 41% chlorine by weight).
A detailed analyses of the PCB congener distributions present in Aroclors 1016, 1242, 1248, 1254, and 1260. Note that the most abundant homologue groups are the di- and tri-chlorinated biphenyls for the low chlorinated Aroclors (1016 and 1242)
PCBs made in the United States were marketed under the trade name Aroclor and most are identified by a four-digit numbering code in which the first two digits indicate that the parent molecule is a biphenyl and for the 1200 series Aroclors the last two digits indicate the chlorine content by weight. For example, Aroclor 1260 has 60 percent ...
Aroclor 1260 - an overview | ScienceDirect Topics
The relationship between the structure of individual PCDD, PCDF, and PCB congeners and their toxicity is the basis of TEFs and the TEQ approach. The TEQ approach is used to determine the toxic potency of complex mixtures of PCDDs, PCDFs, and PCBs found in the environment.
Aroclor - an overview | ScienceDirect Topics
Specific Aroclors carried a four-digit reference number (e.g., Aroclor 1242, 1248, 1254, and 1260), which indicates the molecule size and the weight percent of chlorine in the formulation. For example, Aroclor 1242 is so named because the PCB molecule has 12 carbons (corners of the biphenyl rings) and is composed of a mixture of congeners such ...