Description

2,2',3,3',4,5',6,6'-Octachlorobiphenyl is a specific, highly chlorinated congener of the polychlorinated biphenyl (PCB) family, identified by the CAS number 40186-71-8. This compound is of significant importance for environmental analysis, toxicological research, and regulatory compliance testing due to its persistence and bioaccumulative potential. It serves as a critical reference standard and analytical standard for laboratories in environmental monitoring, food safety, and industrial hygiene sectors, enabling precise quantification and method validation.

Application

• Environmental Analysis Reference Standard: Used for the calibration and validation of analytical instruments (GC-MS, HPLC) in testing soil, water, and sediment for PCB contamination.
• Toxicological and Biomedical Research: Employed in studies investigating the metabolism, distribution, and chronic health effects of specific PCB congeners.
• Food and Feed Safety Testing: Acts as a critical standard in the analysis of PCB residues in food products, animal feed, and edible oils to ensure regulatory compliance.
• Quality Control and Method Development: Serves as a certified reference material (CRM) for developing and verifying analytical methods in commercial and regulatory laboratories.
• Industrial Hygiene Monitoring: Used to calibrate equipment for workplace air monitoring and exposure assessment in industries dealing with historical electrical equipment.
• Regulatory Compliance and Proficiency Testing: Essential for laboratories participating in proficiency testing schemes to demonstrate analytical competency for PCBs as mandated by global regulations (e.g., Stockholm Convention, EU directives).

Basic Information

Product Name	2,2',3,3',4,5',6,6'-Octachlorobiphenyl
CAS No.	40186-71-8
Molecular Formula	C₁₂H₂Cl₈
Molecular Weight	429.77 g/mol
Synonyms	PCB 198; 2,2',3,3',4,5',6,6'-Octachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,2',3,3',4,5',6,6'-octachloro-; Octachlorobiphenyl (IUPAC); Congener 198; Aroclor component (trace); Polychlorinated Biphenyl 198
EINECS	Contact for details

Quality Control

Our high-purity 2,2',3,3',4,5',6,6'-Octachlorobiphenyl is manufactured and handled under strict quality protocols to ensure identity, purity, and stability. Each batch is characterized using advanced analytical techniques including GC-MS, HPLC, and NMR to confirm congener-specific identity and purity. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and chromatographic data is provided with every shipment, supporting GLP and ISO 17025 compliant laboratory work.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). For long-term stability, store under inert atmosphere at -20°C. Keep the container sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or powder
Identification (IR)	Conforms to reference spectrum
Identification (GC-MS)	Conforms to reference retention time and mass spectrum
Purity (HPLC)	≥ 98.0% (Area Percent)
Related Substances (HPLC)	Total other PCB congeners ≤ 2.0%
Solubility	Soluble in common organic solvents (e.g., hexane, toluene, acetone)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.