Basic information
- CAS
52663-68-0- Standard SMILES
Clc1cc(Cl)c(-c2c(Cl)c(Cl)cc(Cl)c2Cl)cc1Cl- InChIKey
UDMZPLROONOSEF-UHFFFAOYSA-N- Molecular formula
- C12H3Cl7
- Average molar mass
- 395.3 g/mol
- Monoisotopic mass
- 391.805444
Overview
2,2',3,4',5,5',6-Heptachlorobiphenyl is one of 209 polychlorinated biphenyls (PCBs). PCBs are a group of synthetic organic compounds with 1-10 chlorine atoms attached to biphenyl. They were manufactured as commercial mixtures but banned in the 1970's because they were found to bioaccumulate and cause harmful health effects. However, PCBs do not break down readily and are still found in the environment. (L4)
Names & identifiers
- Preferred name
- Pcb 187
- IUPAC
- 1,2,4,5-tetrachloro-3-(2,4,5-trichlorophenyl)benzene
- English name
- 2,2',3,4',5,5',6-Heptachlorobiphenyl
- Molecular formula
- C12H3Cl7
- Molecular weight
- 395.32
Names & synonyms
2,2',3,4',5,5',6-HEPTACHLOROBIPHENYL52663-68-0PCB 1872,2',3,4',5,5',6-Heptachloro-1,1'-biphenyl1,2,4,5-tetrachloro-3-(2,4,5-trichlorophenyl)benzeneDTXSID5052832CB187 cpdCIP7BRA48EDTXCID7031375RefChem:53438621-519-4PCB No. 187
Show more names
BZ NO 187PCB NO 187PCB187 in CyclohexaneC20018700 PCB No. 187Lactic Acid Impurity 32PCB No. 187 10 μg/mL in IsooctaneL20018700IO PCB No. 187 10μg/mLin Isooctane
1,1'-Biphenyl, 2,2',3,4',5,5',6-heptachloro-UNII-CIP7BRA48ESCHEMBL4449767CHEMBL3560538SCHEMBL29624835MSK3785UDMZPLROONOSEF-UHFFFAOYSA-NTox21_303787
Database identifiers
- CAS
52663-68-0- PubChem CID
- 40475
- DTXSID
DTXSID5052832- ChEMBL
CHEMBL3560538
Properties
Computed structural properties
- XLogP
- 7.5
- Topological polar surface area
- 0 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 0
- Rotatable bonds
- 1
- Heavy atoms
- 19
- Formal charge
- 0
- Complexity
- 298
Experimental & physicochemical properties
LogP6.92
Endocrine DisruptorsPotential endocrine disrupting compound
Collision Cross Section171.9 Ų [M]+ [CCS Type: TIMS, Method: calibration with PAHs]
Physicochemical properties
- Melting point
- 149 °C · 149°C
- Boiling point
- 479.43 °C · 479.43°C (rough estimate)
- Density
- 1.658 · 1.6580 (rough estimate)
- refractive index
- 1.633 · 1.6330 (rough estimate)
- storage temp.
- room temp
- Water Solubility
- 4.51 ug/L · 4.51ug/L(20 ºC)
- Henry's Law Constant
- 1.6 · 1.6×10-2 mol/(m3Pa) at 25℃, Bamford et al. (2000)
- FDA UNII
- 7 BRA48E · CIP7BRA48E
- EPA Substance Registry System
- 2 · 2,2',3,4',5,5',6-Heptachlorobiphenyl (52663-68-0)
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 7.1% (3 of 42) of reports.
Warning
H373 (92.9%): May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
P260, P273, P319, P391, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 42 reports by companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Regulatory InformationHazard Traits - Carcinogenicity; Dermatotoxicity; Developmental Toxicity; Endocrine Toxicity; Hepatotoxicity and Digestive System Toxicity; Immunotoxicity; Neurotoxicity; Reproductive Toxicity
Hazard Classes and CategoriesSTOT RE 2 (92.9%)
Safety & protection
Minimum Risk LevelIntermediate Oral: 0.03 ug/kg/day (L134)
Toxicology
Treatment
There are no specific treatments for PCB poisoning, since it is not usually recognized until after substantial chronic exposure. Only preventing further exposure and treating the observed symptoms can be done. Acute inhalation can be treated by administering oxygen. (L4)
Health Effects
The most common health effects of PCBs are skin conditions such as chloracne and rashes. Chronic PCB exposure has also been shown to cause liver, stomach and kidney, damage, jaundice, edema, anemia, changes in the immune system, behavioral alterations, and impaired reproduction. (L4)
Chemistry & industry
Pharmacology
Metabolism/Metabolites
PCBs are absorbed via inhalation, oral, and dermal routes of exposure. They are trasported in the blood, often bound to albumin. Due to their lipophilic nature they tend to accumulate in lipid-rich tissues, such as the liver, adipose, and skin. Metabolism of PCBs is very slow and varies based on the degree and position of chlorination. PCBs are metabolized by the microsomal monooxygenase system catalyzed by cytochrome P-450 enzymes to polar metabolites that can undergo conjugation with glutathione and glucuronic acid. The major metabolites are hydroxylated products which are excreted in the bile and faeces. The slow metabolism of PCBs means they tend to accumulate in body tissues. (L4, T6)
Uses & manufacturing
Uses
PCBs were used as coolants and lubricants in transformers, capacitors, and other electrical devices (such as fluorescent lights and refridgerators) produced before 1977. PCBs may contaminate the air and water near hazardous waste sites. In addition, PCBs bioaccumulate in the environment and may be found in fish, meat, and dairy products. (L4)
Applications
Uses2,2'',3,4'',5,5'',6-Heptachlorobiphenyl is a polychlorinated biphenyl (PCB) congeners.
Upstream & downstream products
Downstream products
Suppliers13 total
上海阿拉丁生化科技股份有限公司400-6206333 13167063860 · [email protected]
上海稳同科技有限公司
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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