Description

2,3,3',4,4',6-Hexachlorobiphenyl CAS NO 74472-42-7 is a specific congener of polychlorinated biphenyls (PCBs), a class of synthetic organic chemicals characterized by their biphenyl structure with varying degrees of chlorination. This compound is of significant importance for research, analytical, and regulatory purposes, particularly in environmental monitoring and toxicology studies. It is primarily needed by analytical laboratories, environmental testing facilities, and research institutions focused on persistent organic pollutant (POP) analysis, method development, and calibration standards.

Application

• Analytical Reference Standard: Serves as a critical certified reference material (CRM) for the qualitative and quantitative analysis of PCB congeners in complex environmental and biological matrices.
• Environmental Monitoring: Used for calibrating equipment and validating methods in the testing of soil, water, sediment, and air samples for PCB contamination.
• Toxicological Research: Essential for studying the specific biological effects, metabolic pathways, and persistence of individual PCB congeners in laboratory settings.
• Method Development & Validation: Employed by laboratories to develop, optimize, and confirm the accuracy and precision of analytical techniques such as GC-MS or GC-ECD.
• Regulatory Compliance Testing: Used as a benchmark to ensure testing protocols meet the requirements of environmental protection agencies and international regulations concerning POPs.
• Quality Assurance/Quality Control (QA/QC): Acts as a spike or control standard in laboratory proficiency testing and internal quality control programs.

Basic Information

Product Name	2,3,3',4,4',6-Hexachlorobiphenyl
CAS No.	74472-42-7
Molecular Formula	C₁₂H₄Cl₆
Molecular Weight	360.88 g/mol
Synonyms	PCB 139; 2,3,3',4,4',6-Hexachlorobiphenyl; 2,3,3',4,4',6-HexaCB; 2,3,3',4,4',6-Hexachloro-1,1'-biphenyl; Biphenyl, 2,3,3',4,4',6-hexachloro-; 1,1'-Biphenyl, 2,3,3',4,4',6-hexachloro-; Hexachlorobiphenyl (PCB 139); PCB Congener 139
EINECS	Contact for details

Quality Control

Our high-purity reference materials are produced and handled under strict quality management protocols. Each batch undergoes rigorous analysis using advanced chromatographic and spectroscopic techniques to ensure identity, purity, and concentration are precisely defined. Certificates of Analysis (COA) are provided, detailing the analytical methods and results. We support compliance with relevant standards for reference materials, and specifications can be tailored to meet specific research or accreditation requirements.

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 recommended low temperatures (e.g., -20°C or as indicated on the label) is advised. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 98.0%
Related Substances (GC)	Total other PCBs ≤ 2.0%
Solubility	Soluble in common organic solvents

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