Description

2,3,3',4,4',5',6-Heptachlorobiphenyl is a specific, high-purity congener of polychlorinated biphenyls (PCBs) identified by CAS NO 74472-50-7. This compound is of critical importance for analytical and research applications, serving as a certified reference material for accurate calibration, method validation, and environmental monitoring. It is primarily needed by analytical laboratories, environmental testing facilities, and research institutions focused on persistent organic pollutant (POP) analysis, regulatory compliance, and toxicological studies.

Application

• Certified Reference Standard (CRM) for the calibration of gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) systems.
• Analytical Method Development and Validation for the precise quantification of PCB congeners in complex matrices.
• Environmental Monitoring and Analysis of soil, water, sediment, and biota samples for regulatory compliance (e.g., EPA, EU directives).
• Quality Control/Quality Assurance (QC/QA) in commercial and regulatory laboratories to ensure accuracy and precision of PCB testing.
• Toxicological and Ecotoxicological Research to study the environmental fate, bioaccumulation, and health effects of specific PCB congeners.
• Forensic Analysis for source identification and fingerprinting of PCB contamination in environmental investigations.

Basic Information

Product Name	2,3,3',4,4',5',6-Heptachlorobiphenyl
CAS No.	74472-50-7
Molecular Formula	C₁₂H₃Cl₇
Molecular Weight	395.32 g/mol
Synonyms	PCB 191; 2,3,3',4,4',5',6-Heptachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,3,3',4,4',5',6-heptachloro-; Heptachlorobiphenyl (PCB 191); BZ# 191; Congener 191; Aroclor congener 191; NSC 89345
EINECS	Contact for details

Quality Control

Our high-purity 2,3,3',4,4',5',6-Heptachlorobiphenyl is manufactured and handled under strict quality protocols to ensure identity, purity, and stability. Each batch is rigorously analyzed using techniques such as GC-MS and HPLC to confirm congener specificity and meets stringent specifications for use as a reference material. Certificates of Analysis (COA) detailing lot-specific purity, chromatographic data, and storage conditions are provided to support your analytical integrity and compliance requirements.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C (refrigerated) or as indicated on the product label or Certificate of Analysis. For long-term storage under an inert atmosphere, please contact us for specific recommendations.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (GC-MS)	Conforms to reference spectrum
Purity (HPLC/GC)	≥ 98.0% (Area Percent)
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.