Description

2,3',4,4',5,5'-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, particularly in environmental monitoring, toxicology studies, and the development of reference standards. It is primarily needed by analytical laboratories, environmental testing facilities, and research institutions focused on persistent organic pollutant (POP) analysis, regulatory compliance, and method validation.

Application

• Analytical Reference Standard: Used as a certified reference material (CRM) for the calibration of analytical instruments like GC-MS and HPLC in environmental and food testing laboratories.
• Environmental Monitoring: Serves as a critical standard for the quantification and confirmation of PCB congeners in soil, sediment, water, and air samples to assess contamination levels.
• Toxicological Research: Employed in scientific studies to investigate the specific biological effects, metabolic pathways, and toxicity profiles of individual PCB congeners.
• Method Development and Validation: Essential for developing, optimizing, and validating analytical methods to ensure accuracy, precision, and regulatory compliance for PCB detection.
• Quality Control/Quality Assurance (QC/QA): Used in laboratory proficiency testing and internal quality control programs to ensure the reliability of analytical data.
• Regulatory Compliance Testing: Provides a benchmark for testing against international regulations concerning POPs, such as the Stockholm Convention.

Basic Information

Product Name	2,3',4,4',5,5'-Hexachlorobiphenyl
CAS No.	52663-72-6
Molecular Formula	C₁₂H₄Cl₆
Molecular Weight	360.88 g/mol
Synonyms	PCB 138; 2,3,4,2',4',5'-Hexachlorobiphenyl; 2,3',4,4',5,5'-Hexachlorodiphenyl; BZ# 138; IUPAC Name: 1,2,4-Trichloro-5-(2,4,5-trichlorophenyl)benzene; CAS 52663-72-6; UN 2315 (as PCBs, regulated)
EINECS	258-103-5

Quality Control

Our high-purity 2,3',4,4',5,5'-Hexachlorobiphenyl is manufactured and handled under strict quality protocols to ensure identity, purity, and stability. Each batch is accompanied by a comprehensive Certificate of Analysis (COA) detailing results from advanced chromatographic and spectroscopic analyses. We adhere to relevant guidelines for reference material production to support reliable and reproducible scientific and regulatory work.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place, preferably at controlled room temperature (15-25°C). Keep away from heat and incompatible materials. Due to the regulated nature of PCBs, ensure storage complies with local environmental and safety regulations.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or powder
Identification (IR)	Conforms to structure
Purity (HPLC/GC)	≥ 98.0% (Area %)
Related Substances (HPLC)	Total impurities ≤ 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.