Description

2,2',3,3',4,5,5'-Heptachlorobiphenyl CAS NO 52663-74-8 is a specific, high-purity congener of polychlorinated biphenyls (PCBs), a class of synthetic organic chemicals. This compound is of significant interest for analytical reference standards and environmental research, enabling precise calibration and quantification. It is primarily required by analytical laboratories, environmental testing facilities, and research institutions focused on legacy pollutant analysis and regulatory compliance.

Application

• Analytical Reference Standard: Used as a certified reference material (CRM) for the calibration of GC-MS, GC-ECD, and HPLC systems in environmental analysis.
• Environmental Monitoring: Critical for the accurate quantification of PCB congeners in soil, water, sediment, and biota samples to assess contamination levels.
• Toxicological Research: Serves as a precise congener for studying the specific biological effects, metabolism, and persistence of heptachlorinated biphenyls.
• 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): Employed as an internal standard or spike in laboratory proficiency testing and inter-laboratory comparison studies.
• Regulatory Compliance Testing: Used to ensure analytical procedures meet the stringent requirements of environmental regulations (e.g., EPA, EU directives) concerning PCB monitoring.

Basic Information

Product Name	2,2',3,3',4,5,5'-Heptachlorobiphenyl
CAS No.	52663-74-8
Molecular Formula	C₁₂H₃Cl₇
Molecular Weight	395.32 g/mol
Synonyms	PCB 180; 2,2',3,3',4,5,5'-Heptachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,2',3,3',4,5,5'-heptachloro-; Heptachlorobiphenyl (IUPAC); 2,2',3,3',4,5,5'-Heptachlorodiphenyl; BZ# 180; PCB Congener 180; Aroclor 1260 Component
EINECS	Contact for details

Quality Control

Every batch of our high-purity 2,2',3,3',4,5,5'-Heptachlorobiphenyl is manufactured and handled under strict quality protocols. We guarantee identity, purity, and stability through comprehensive analytical testing, including GC-MS, HPLC, and NMR. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting the exact congener purity, solvent content (if applicable), and analytical results. Our quality system is designed to support GLP/GMP compliant research and meets the needs of accredited analytical laboratories.

Storage

Preserve in a tightly closed container, protected from light. For long-term stability, store at 2-8°C. Allow the sealed vial to equilibrate to room temperature before opening to prevent moisture condensation. Store in a cool, dry, and well-ventilated area dedicated for reference standards.

Specification

Item	Specification
Appearance	White to off-white solid or solution (as specified)
Identification (IR / NMR)	Conforms to structure
Purity (GC / HPLC)	≥ 98.0% (Congener-specific)
Solvent Content (GC)	As specified on COA
Water Content (KF)	< 0.5%

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