Description

2,2',3,4,5,6,6'-Heptachlorobiphenyl CAS NO 74472-49-4 is a specific, highly chlorinated congener of polychlorinated biphenyls (PCBs). This compound is of significant importance as a certified reference material and analytical standard for environmental monitoring, toxicological research, and regulatory compliance testing. It is primarily needed by analytical laboratories, research institutions, and environmental agencies involved in the precise quantification and study of persistent organic pollutants (POPs) to assess contamination and understand congener-specific toxicology.

Application

• Certified Reference Standard for the calibration of analytical instruments (GC-MS, GC-ECD) in environmental testing.
• Analytical Method Development and Validation for the detection and quantification of PCB congeners in complex matrices.
• Toxicological and Ecotoxicological Research to study the specific biological effects, metabolism, and environmental fate of heptachlorobiphenyl congeners.
• Quality Control and Assurance in laboratories performing PCB analysis to ensure accuracy and reliability of test results.
• Regulatory Compliance Testing for monitoring PCB levels in soil, water, sediment, and biological tissues against international standards (e.g., Stockholm Convention, EPA methods).
• Forensic Environmental Analysis for source identification and fingerprinting of PCB contamination.

Basic Information

Product Name	2,2',3,4,5,6,6'-Heptachlorobiphenyl
CAS No.	74472-49-4
Molecular Formula	C₁₂H₃Cl₇
Molecular Weight	395.32 g/mol
Synonyms	PCB 187; 2,2',3,4,5,6,6'-Heptachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,2',3,4,5,6,6'-heptachloro-; Heptachlorobiphenyl (IUPAC); BZ# 187; Congener 187; 2,2',3,4,5,6,6'-Heptachlorodiphenyl; Aroclor congener 187
EINECS	Contact for details

Quality Control

Our high-purity 2,2',3,4,5,6,6'-Heptachlorobiphenyl is manufactured and handled under strict quality protocols to ensure identity, purity, and stability for critical analytical applications. Each batch is characterized using advanced chromatographic and spectroscopic techniques. A comprehensive Certificate of Analysis (COA) is provided, detailing purity, congener-specific identity confirmation, and trace solvent levels, supporting compliance with ISO 17034 and ISO/IEC 17025 requirements for reference material producers and testing laboratories.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C (refrigerated) or as indicated on the certificate of analysis. For long-term storage under an inert atmosphere, please contact us for specific recommendations. Keep away from heat and open flame.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to reference spectrum
Identification (GC-MS)	Conforms to reference retention time and mass spectrum
Purity (GC-FID/GC-ECD)	≥ 98.0% (area percent)
Related Substances (HPLC/GC)	Total other PCB congeners ≤ 2.0%
Solvent Residue (GC)	Meets ICH guidelines

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