Description

2,2',3,4,5,5'-Hexachlorobiphenyl CAS NO 52712-04-6 is a specific, highly chlorinated congener of the polychlorinated biphenyl (PCB) family, known for its stable chemical structure. This compound is of significant interest for research, analytical, and regulatory compliance purposes due to its persistence and environmental impact profile. It serves as a critical reference standard and calibrant for laboratories involved in environmental monitoring, toxicology studies, and the analysis of legacy pollutants.

Application

• Environmental Analysis Reference Standard: Primary use as an analytical standard for the quantification and confirmation of PCB congeners in soil, water, sediment, and biological samples via GC-MS or GC-ECD.
• Toxicological Research: Used in scientific studies to investigate the specific toxicokinetics, metabolic pathways, and health effects of individual PCB congeners.
• Method Development & Validation: Essential for developing, calibrating, and validating analytical methods in compliance with EPA, EU, and other international regulatory frameworks for persistent organic pollutants (POPs).
• Quality Control/Quality Assurance (QC/QA): Serves as a spike or recovery standard in laboratory QC procedures to ensure accuracy and precision in PCB analysis.
• Regulatory Compliance Testing: Used by commercial testing laboratories and industrial facilities to monitor and demonstrate compliance with environmental regulations concerning PCB contamination.
• Educational & Forensic Analysis: Applied in academic settings for teaching advanced analytical chemistry and in forensic investigations to identify pollutant sources.

Basic Information

Product Name	2,2',3,4,5,5'-Hexachlorobiphenyl
CAS No.	52712-04-6
Molecular Formula	C₁₂H₄Cl₆
Molecular Weight	360.88 g/mol
Synonyms	PCB 138; 2,2',3,4,5,5'-Hexachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,2',3,4,5,5'-hexachloro-; BZ# 138; IUPAC No. 138; Congener 138; 2,2',3,4,5,5'-HexaCB; Hexachlorobiphenyl (isomer not specified).
EINECS	Contact for details

Quality Control

Every batch of our high-purity 2,2',3,4,5,5'-Hexachlorobiphenyl is manufactured and handled under strict quality protocols. The material undergoes rigorous identity confirmation and purity analysis using advanced techniques such as GC-MS, HPLC, and NMR to ensure it meets the exacting requirements for use as a reference material. A comprehensive Certificate of Analysis (COA) detailing purity, chromatographic data, and storage conditions is provided with each shipment to support your research and compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). For long-term stability, consider storage at 2-8°C. Keep the container tightly sealed in a well-ventilated area and handle with appropriate personal protective equipment due to the compound's hazardous nature.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or powder
Identification (IR)	Conforms to reference spectrum
Identification (GC-MS)	Conforms to reference retention time and mass spectrum
Purity (HPLC/GC)	≥ 98.0% (Area %)
Related Substances (HPLC/GC)	Individual impurity ≤ 1.0%; 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.