Description

2,2',3,4,4',5,6-Heptachlorobiphenyl CAS NO 74472-47-2 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 engaged in the quantification and study of persistent organic pollutants (POPs).

Application

• Environmental Analysis Reference Standard: Used as a certified reference material (CRM) for the calibration and validation of analytical instruments (GC-MS, HPLC) in the detection of PCBs in soil, water, and air samples.
• Toxicological and Biomedical Research: Serves as a precise congener standard in studies investigating the metabolism, bioaccumulation, and health effects of specific PCB congeners.
• Food and Feed Safety Testing: Employed as an analytical standard in laboratories to ensure compliance with maximum residue limits (MRLs) for PCBs in the food supply chain.
• Waste and Material Analysis: Essential for the accurate characterization of PCB contamination in industrial wastes, transformer oils, and building materials for remediation purposes.
• Regulatory Compliance and Method Development: Used by regulatory bodies and contract research organizations (CROs) to develop, verify, and enforce standardized testing methods for POPs under international treaties like the Stockholm Convention.
• Quality Control for Certified Reference Material Producers: Acts as a high-purity starting material for manufacturers producing secondary reference standards and proficiency testing samples.

Basic Information

Product Name	2,2',3,4,4',5,6-Heptachlorobiphenyl
CAS No.	74472-47-2
Molecular Formula	C₁₂H₃Cl₇
Molecular Weight	395.32 g/mol
Synonyms	PCB 183; 2,2',3,4,4',5,6-Heptachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,2',3,4,4',5,6-heptachloro-; Heptachlorobiphenyl (IUPAC); BZ# 183; Congener 183; Aroclor congener 183; 2,2',3,4,4',5,6-HeptaCB
EINECS	Contact for details

Quality Control

Our high-purity reference standards are manufactured and handled under strict quality-controlled conditions to ensure batch-to-batch consistency and traceability. Each lot is rigorously analyzed using state-of-the-art techniques including GC-MS and HPLC to confirm identity and purity. A comprehensive Certificate of Analysis (COA) is provided, detailing the analytical results, method of determination, and storage recommendations. We support 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. 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 away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Identification (GC-MS)	Conforms to reference
Purity (HPLC)	≥ 98.0%
Purity (GC-FID)	≥ 98.0%
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.