Description

2,3',4',5-Tetrachlorobiphenyl is a specific, high-purity polychlorinated biphenyl (PCB) congener, identified by CAS NO 32598-11-1. This compound is of significant importance as a critical analytical standard and reference material for environmental testing and toxicological research. It is primarily needed by analytical laboratories, environmental monitoring agencies, and research institutions focused on persistent organic pollutant (POP) analysis, regulatory compliance, and method development.

Application

• Environmental Analysis Reference Standard: Used as a certified reference material (CRM) for the calibration and validation of analytical instruments (GC-MS, GC-ECD) in the detection of PCBs in soil, water, and sediment samples.
• Toxicological and Metabolic Studies: Serves as a precise congener standard in research investigating the biological fate, metabolic pathways, and toxic effects of specific PCB isomers.
• Regulatory Compliance Testing: Essential for laboratories performing congener-specific PCB analysis to comply with international regulations such as the Stockholm Convention, EPA methods (e.g., EPA 8082), and EU directives.
• Food and Feed Safety Testing: Employed as an analytical standard in the quantification of PCB residues in food products, animal feed, and edible oils to ensure safety standards.
• Quality Control and Method Development: Used by manufacturers of analytical standards and testing laboratories to develop, optimize, and verify new analytical methodologies for halogenated organic compounds.
• Forensic and Source Identification: Aids in environmental forensics for fingerprinting PCB sources and understanding contamination patterns in industrial sites.

Basic Information

Product Name	2,3',4',5-Tetrachlorobiphenyl
CAS No.	32598-11-1
Molecular Formula	C12H6Cl4
Molecular Weight	291.99 g/mol
Synonyms	PCB 70; 2,3',4',5-Tetrachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,3',4',5-tetrachloro-; 2,3,4',5-Tetrachlorobiphenyl; BZ# 70; Aroclor congener 70; 2,3',4',5-TCB
EINECS	Contact for details

Quality Control

Our high-purity 2,3',4',5-Tetrachlorobiphenyl is manufactured and handled under strict quality protocols to ensure batch-to-batch consistency and reliability as an analytical standard. Each lot is characterized using advanced chromatographic and spectroscopic techniques. A comprehensive Certificate of Analysis (COA) is provided, detailing purity, congener identity confirmation, and impurity profiles. Our quality system supports compliance with relevant standards for reference materials.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 15-25°C). Keep away from strong acids and organic solvents. For long-term stability, consider storage under inert atmosphere at lower temperatures (e.g., -20°C).

Specification

Item	Specification
Appearance	White to off-white crystalline solid or powder
Identification (IR)	Conforms to structure
Assay (HPLC/GC)	≥ 98.0% (by area normalization)
Purity (GC-FID/ECD)	≥ 97.0%
Related Substances (HPLC)	Total other PCB congeners ≤ 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.