Description

2,3,3',4'-Tetrachlorobiphenyl CAS NO 41464-43-1 is a specific congener of polychlorinated biphenyls (PCBs), a class of synthetic organic chemicals known for their stability and insulating properties. This high-purity reference standard is critical for analytical and research applications, enabling precise calibration and method validation. It is primarily utilized by environmental testing laboratories, regulatory agencies, and academic researchers focused on persistent organic pollutant (POP) analysis, toxicology studies, and environmental fate modeling.

Application

• Analytical Reference Standard: Primary use for calibrating GC-MS, GC-ECD, and HPLC systems in environmental and food safety testing.
• Environmental Monitoring: Quantification and congener-specific analysis of PCBs in soil, sediment, water, and air samples for regulatory compliance.
• Toxicological Research: Used in laboratory studies to investigate the specific biochemical pathways, metabolic products, and toxic effects of individual PCB congeners.
• Method Development & Validation: Essential for developing, verifying, and accrediting analytical methods according to ISO, EPA, and other international standards.
• Quality Control/Quality Assurance (QC/QA): Serves as a spike or recovery standard to assess the accuracy and precision of analytical procedures in commercial testing labs.
• Forensic Analysis: Aiding in the source identification and "fingerprinting" of PCB contamination in environmental forensic investigations.
• Certified Reference Material (CRM) Production: Used as a primary material in the formulation of certified mixtures for proficiency testing and laboratory accreditation.

Basic Information

Product Name	2,3,3',4'-Tetrachlorobiphenyl
CAS No.	41464-43-1
Molecular Formula	C12H6Cl4
Molecular Weight	291.99 g/mol
Synonyms	PCB 56; 2,3,3',4'-Tetrachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,3,3',4'-tetrachloro-; 2,3,3',4'-Tetrachlorodiphenyl; BZ No. 56; Congener 56; 2,3,4'-Trichloro-3'-chlorobiphenyl (ambiguous); Tetrachlorobiphenyl (unspecified isomer)
EINECS	Contact for details

Quality Control

Every batch of 2,3,3',4'-Tetrachlorobiphenyl is produced and handled under strict quality protocols to ensure identity, purity, and stability. Our products undergo rigorous quality testing, including chromatographic purity analysis and confirmatory identification, to ensure compliance with the stringent requirements for analytical reference materials. A comprehensive Certificate of Analysis (COA) detailing batch-specific purity, analytical methods, and traceability is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C (refrigerated) or as specified on the label or Certificate of Analysis. For long-term storage under an inert atmosphere, please contact us. Keep away from heat and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or solution (as specified)
Identification (IR / NMR)	Conforms to structure
Purity (GC / HPLC)	≥ 98.0% (typical grade, higher purity available)
Related Substances (GC / HPLC)	Total other PCB congeners < 2.0%
Solvent (if applicable)	Specified on COA (e.g., Isooctane, Toluene, Methanol)
Concentration (if solution)	As specified (e.g., 10 µg/mL, 50 µg/mL, 100 µg/mL)

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