Description

2,2',3,3',4',5,6-Heptachlorobiphenyl CAS NO 52663-70-4 is a specific, high-purity congener of polychlorinated biphenyls (PCBs), a 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 needed by analytical laboratories, environmental testing facilities, and research institutions focused on persistent organic pollutant (POP) analysis, method development, and quality control.

Application

• Environmental Analysis Reference Standard: Used as a certified reference material (CRM) for the quantification and identification of PCB congeners in soil, water, sediment, and air samples.
• Food and Feed Safety Testing: Serves as a calibration standard in GC-MS or GC-ECD systems for monitoring PCB contamination in the food chain to ensure regulatory compliance.
• Toxicological and Biomedical Research: Employed in studies investigating the metabolism, distribution, and health effects of specific PCB congeners.
• Method Development and Validation: Essential for developing, optimizing, and validating analytical methods for PCB detection and congener-specific analysis.
• Quality Assurance/Quality Control (QA/QC): Used as an internal standard or spike in laboratory proficiency testing and to ensure the accuracy and precision of analytical data.
• Waste and Industrial Material Analysis: Applied in the characterization of PCB content in transformer oils, capacitors, and other industrial wastes for proper disposal and remediation.

Basic Information

Product Name	2,2',3,3',4',5,6-Heptachlorobiphenyl
CAS No.	52663-70-4
Molecular Formula	C₁₂H₃Cl₇
Molecular Weight	395.32 g/mol
Synonyms	PCB 170; 2,2',3,3',4',5,6-Heptachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,2',3,3',4',5,6-heptachloro-; Heptachlorobiphenyl (IUPAC); BZ# 170; Congener 170; Aroclor congener 170; 2,2',3,3',4',5,6-HeptaCB
EINECS	Contact for details

Quality Control

Our high-purity reference standards are produced and handled under strict quality protocols. Each batch of 2,2',3,3',4',5,6-Heptachlorobiphenyl is rigorously analyzed using state-of-the-art chromatographic and spectroscopic techniques to ensure identity, purity, and stability. A comprehensive Certificate of Analysis (COA) is provided, detailing the analytical results, including assay purity (typically ≥98% by GC), chromatographic profile, and confirmation of structure. Our quality system supports compliance with relevant standards for reference materials.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C (refrigerated) or as indicated on the label or Certificate of Analysis. For long-term storage, keep desiccated at -20°C. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Identification (GC/MS)	Conforms to structure
Purity (GC-FID/GC-ECD)	≥ 98.0%
Related Substances (GC)	Total other PCBs ≤ 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.