Description

2,2',3,4',5,6-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, toxicological studies, and regulatory compliance testing. It is primarily required by analytical laboratories, environmental testing facilities, and research institutions focused on persistent organic pollutant (POP) analysis 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 confirmation of PCB congeners in soil, water, sediment, and air samples for environmental impact assessments.
• Food and Feed Safety Testing: Used in methods to detect and quantify PCB residues to ensure compliance with international food safety regulations.
• Toxicological Research: Serves as a precise standard in studies investigating the metabolism, distribution, and chronic health effects of specific PCB congeners.
• Method Development and Validation: Essential for developing, optimizing, and validating new analytical protocols for PCB detection in complex matrices.
• Quality Control/Quality Assurance (QC/QA): Employed in laboratory QC procedures to ensure the accuracy and precision of routine PCB analysis.
• Regulatory Compliance: Supports testing mandated by global regulations such as the Stockholm Convention on POPs, EPA methods, and EU directives.

Basic Information

Product Name	2,2',3,4',5,6-Hexachlorobiphenyl
CAS No.	68194-13-8
Molecular Formula	C₁₂H₄Cl₆
Molecular Weight	360.88 g/mol
Synonyms	PCB 138; 2,2',3,4,5,5'-Hexachlorobiphenyl (IUPAC inverted numbering); 2,2',3,4',5,6-Hexachlorobiphenyl; 2,3,4,2',5',6-Hexachlorobiphenyl; BZ# 138; Congener 138; Hexachlorobiphenyl (mixed isomers); Polychlorinated Biphenyl 138
EINECS	Contact for details

Quality Control

Our high-purity 2,2',3,4',5,6-Hexachlorobiphenyl is manufactured and handled under strict quality management systems. Each batch is characterized using advanced analytical techniques to ensure identity, purity, and stability. A comprehensive Certificate of Analysis (COA) is provided, detailing results from tests including assay (by GC or HPLC), identity confirmation (by GC-MS, NMR, or IR), and impurity profiling. We support compliance with relevant analytical standards and can provide materials traceable to NIST where applicable.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). For long-term stability, storage at 2-8°C is recommended. Keep the container tightly sealed in a well-ventilated area and away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or solution (as specified)
Identification (IR / NMR)	Conforms to reference spectrum
Assay (HPLC / GC)	≥ 98.0% (or as per grade)
Related Substances (HPLC / GC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%
Solvent Content (GC)	As per COA (for solutions)
Water Content (KF)	≤ 0.5%

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