Description

2,2',3,3',4,5,6-Heptachlorobiphenyl CAS NO 68194-16-1 is a specific, high-purity congener of polychlorinated biphenyls (PCBs), a class of synthetic organic chemicals. This compound is of significant importance for analytical reference and research purposes, particularly in environmental monitoring and toxicological studies. It is primarily required by analytical laboratories, regulatory agencies, and research institutions for use as a certified reference material (CRM) in the calibration of equipment and the quantification of PCB contamination in various matrices.

Application

• Certified Reference Material (CRM): Serves as a primary standard for the accurate calibration of analytical instruments like GC-MS and HPLC for PCB analysis.
• Environmental Analysis: Used in the testing and quantification of PCB residues in soil, sediment, water, and air samples to assess environmental pollution and compliance.
• Food and Feed Safety Testing: Employed as an analytical standard to detect and measure PCB levels in food products, animal feed, and edible oils to ensure regulatory safety limits are met.
• Toxicological and Biomedical Research: Provides a defined congener for studying the metabolism, distribution, and specific toxic effects (e.g., endocrine disruption) of PCBs in biological systems.
• Method Development and Validation: Essential for developing, optimizing, and validating new analytical methods for the separation and detection of complex PCB mixtures.
• Quality Assurance/Quality Control (QA/QC): Used as a spike or control standard in laboratory proficiency testing and internal QA/QC programs to ensure data accuracy and reliability.
• Regulatory Compliance and Forensics: Supports enforcement activities by providing a definitive standard for the identification and source tracking of PCB contaminants in legal and forensic investigations.

Basic Information

Product Name	2,2',3,3',4,5,6-Heptachlorobiphenyl
CAS No.	68194-16-1
Molecular Formula	C₁₂H₃Cl₇
Molecular Weight	395.32 g/mol
Synonyms	PCB 174; 2,2',3,3',4,5,6-Heptachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,2',3,3',4,5,6-heptachloro-; Heptachlorobiphenyl (PCB 174); BZ# 174; 2,2',3,3',4,5,6-HeptaCB; Congener 174; Aroclor congener 174
EINECS	Contact for details

Quality Control

Our high-purity reference standards are produced and verified under strict quality management protocols. Each batch is characterized using orthogonal analytical techniques to ensure identity, purity, and stability. A comprehensive Certificate of Analysis (COA) is supplied, detailing the results from tests including identification (GC-MS, NMR), assay (by GC-FID or HPLC), and verification against certified reference values where available. Our quality system is designed to support ISO/IEC 17025 and GMP compliant laboratories.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C in a cool, dry place. For long-term storage, keep the sealed vial under an inert atmosphere (e.g., argon or nitrogen) at -20°C or below to ensure maximum stability. The compound is light-sensitive (store away from light) and should be handled in a controlled environment to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or solution (as specified)
Identification (IR / NMR)	Conforms to reference spectrum
Purity (GC / HPLC)	≥ 98.0% (Area Percent)
Assay (GC-FID)	≥ 97.0% (Weight Percent)
Related Substances (GC-MS)	Total other PCB congeners ≤ 2.0%
Solvent Content (GC)	As per COA (for solutions)
Water Content (KF)	≤ 0.5% w/w

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