Description

2,2',3,4,4',5'-Hexachlorobiphenyl is a specific congener of polychlorinated biphenyls (PCBs), a well-studied class of synthetic organic chemicals. This compound is of significant importance for analytical and research purposes, serving as a critical reference standard for environmental monitoring and toxicological 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 analytical instruments like GC-MS and HPLC.
• Environmental Analysis: Quantification and monitoring of PCB congeners in soil, water, sediment, and air samples to assess contamination levels.
• Food and Feed Safety Testing: Used in methods to detect and quantify PCB residues to ensure compliance with international safety regulations.
• Toxicological Research: Serves as a precise standard in studies investigating the metabolism, distribution, and health effects of specific PCB congeners.
• Method Development and Validation: Essential for developing, optimizing, and validating new analytical protocols for PCB detection and separation.
• Quality Control/Quality Assurance (QC/QA): Employed in laboratory proficiency testing and internal quality control programs to ensure accurate and reproducible results.
• Regulatory Compliance: Supports testing mandated by regulations such as the Stockholm Convention on POPs, EPA methods, and EU directives.

Basic Information

Product Name	2,2',3,4,4',5'-Hexachlorobiphenyl
CAS No.	35065-28-2
Molecular Formula	C₁₂H₄Cl₆
Molecular Weight	360.88 g/mol
Synonyms	PCB 138; 2,2',3,4,4',5'-Hexachlorobiphenyl; 2,2',3,4,4',5'-HexaCB; Biphenyl, 2,2',3,4,4',5'-hexachloro-; Hexachlorobiphenyl (IUPAC); PCB Congener 138; 2,3,4,2',4',5'-Hexachlorobiphenyl
EINECS	Contact for details

Quality Control

Our high-purity 2,2',3,4,4',5'-Hexachlorobiphenyl is manufactured and handled under strict quality management protocols. Each batch is subjected to rigorous analytical testing, including identity confirmation by multiple techniques and precise purity assay, to ensure it meets the exacting standards required for reference materials. A comprehensive Certificate of Analysis (COA) detailing purity, analytical methods, and traceability is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. For long-term stability, storage at temperatures between 2-8°C is recommended. Keep the container tightly sealed to prevent any potential contamination or degradation.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to reference spectrum
Identification (GC-MS)	Conforms to reference standard
Purity (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility	Soluble in common organic solvents (e.g., hexane, acetone)

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