Description

2,3,3',4,5,5',6-Heptachlorobiphenyl CAS NO 74472-51-8 is a specific, highly chlorinated congener of the polychlorinated biphenyl (PCB) family, characterized by its distinct hepta-chloro substitution pattern. This compound is of significant importance for analytical and research purposes, serving as a critical reference standard for environmental monitoring and toxicological studies. It is primarily needed by analytical laboratories, environmental testing facilities, and research institutions focused on persistent organic pollutant (POP) analysis, regulatory compliance, and the study of bioaccumulation and environmental fate.

Application

• Environmental Analysis Reference Standard: Used as a certified reference material (CRM) for the calibration of analytical instruments (GC-MS, GC-ECD) in the quantification of PCB congeners in soil, water, sediment, and biota samples.
• Toxicological Research: Serves as a precise congener for studying the specific toxicokinetics, metabolic pathways, and endocrine-disrupting effects of heptachlorinated biphenyls in model organisms.
• Regulatory Compliance Testing: Essential for laboratories conducting testing to comply with global regulations (e.g., Stockholm Convention, EPA methods) governing PCBs and persistent organic pollutants.
• Quality Control and Method Development: Employed in the development, validation, and ongoing quality assurance of analytical methods for complex PCB mixtures (Aroclors) and congener-specific analysis.
• Forensic Environmental Chemistry: Acts as a marker congener in source identification and fingerprinting studies to trace the origin and weathering of PCB contamination in the environment.
• Food and Feed Safety Analysis: Utilized in the accurate detection and quantification of PCB residues in food chains, ensuring compliance with maximum residue limits (MRLs).

Basic Information

Product Name	2,3,3',4,5,5',6-Heptachlorobiphenyl
CAS No.	74472-51-8
Molecular Formula	C₁₂H₃Cl₇
Molecular Weight	395.32 g/mol
Synonyms	PCB 190; 2,3,3',4,5,5',6-Heptachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,3,3',4,5,5',6-heptachloro-; Heptachlorobiphenyl (PCB-190); BZ# 190; Congener 190; 2,3,3',4,5,5',6-HeptaCB; CAS 74472-51-8
EINECS	Contact for details

Quality Control

Our high-purity reference standards are manufactured and handled under strict quality-controlled conditions to ensure identity, purity, and stability. Each batch is accompanied by a comprehensive Certificate of Analysis (COA) that includes data from orthogonal analytical techniques. We ensure compliance with relevant standards for certified reference materials, and our quality system supports traceability and data integrity for regulatory and research applications.

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. Handle and store in accordance with all applicable laboratory safety regulations.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Identification (GC-MS)	Conforms to reference
Purity (GC-FID/GC-ECD)	≥98.0% (area percentage)
Purity (HPLC)	≥97.0%
Related Substances (HPLC/GC)	Total impurities ≤3.0%
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.