Description

2,2',3,3',5,5',6,6'-Octachlorobiphenyl is a specific, highly chlorinated congener of the polychlorinated biphenyl (PCB) family. This compound is of significant importance for analytical and research purposes, serving as a critical reference standard and a model compound in environmental fate and toxicology studies. It is primarily needed by analytical laboratories, environmental testing facilities, and research institutions focused on persistent organic pollutant (POP) analysis, regulatory compliance, and method development.

Application

• Analytical Reference Standard: Primary use as a certified reference material (CRM) for the calibration of GC-MS, GC-ECD, and other analytical instruments in environmental testing.
• Environmental Monitoring: Used in the quantification and confirmation of PCB congeners in soil, water, sediment, and biota samples to assess contamination levels.
• Method Development & Validation: Essential for developing, optimizing, and validating analytical methods for PCB detection and quantification in complex matrices.
• Toxicological Research: Serves as a model compound in studies investigating the biochemical, metabolic, and toxic effects of specific PCB congeners.
• Quality Control & Assurance: Employed in laboratory proficiency testing and internal quality control programs to ensure accuracy and precision of PCB analyses.
• Regulatory Compliance Testing: Used by industries and consultancies to test materials and waste streams for compliance with international regulations like the Stockholm Convention on POPs.

Basic Information

Product Name	2,2',3,3',5,5',6,6'-Octachlorobiphenyl
CAS No.	2136-99-4
Molecular Formula	C₁₂H₂Cl₈
Molecular Weight	429.79 g/mol
Synonyms	PCB 204; 2,2',3,3',5,5',6,6'-OctaCB; Octachlorobiphenyl; 2,2',3,3',5,5',6,6'-Octachlorodiphenyl; 2,3,2',3',5,6,5',6'-Octachlorobiphenyl; 3,3',4,4',5,5',6,6'-Octachlorobiphenyl (alternate numbering); OctaCB; CAS 2136-99-4
EINECS	218-383-8

Quality Control

Our high-purity 2,2',3,3',5,5',6,6'-Octachlorobiphenyl is manufactured and handled under strict quality protocols to ensure identity, purity, and stability for critical analytical applications. Each batch is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, chromatographic data, and confirmatory identification. We support compliance with relevant standards for reference materials and can provide data packages for method validation.

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, storage at 2-8°C is recommended. Keep the container securely sealed in a well-ventilated area.

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/GC)	≥ 98.0% (Area %)
Related Substances (HPLC/GC)	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.