Description

3,3',5,5'-Tetrachlorobiphenyl CAS NO 33284-52-5 is a specific, high-purity polychlorinated biphenyl (PCB) congener. This compound is of significant importance as a critical reference standard and analytical tool for environmental monitoring and toxicological research. It is primarily needed by analytical laboratories, research institutions, and environmental agencies involved in the detection, quantification, and study of PCB contamination and its biological impacts.

Application

• Environmental Analysis Reference Standard: Used as a certified reference material (CRM) for calibrating equipment and validating methods in the analysis of soil, water, and sediment samples.
• Food Safety Testing: Serves as a critical standard in the quantification of PCB residues in food products, fats, and oils to ensure regulatory compliance.
• Toxicological and Biomedical Research: Employed in studies investigating the metabolism, distribution, and health effects of specific PCB congeners.
• Waste and Material Analysis: Used for the identification and profiling of PCBs in industrial wastes, transformer oils, and other contaminated materials.
• Method Development and Validation: Essential for developing and confirming the accuracy of new analytical techniques such as GC-MS or GC-ECD for PCB detection.
• Quality Control and Assurance: Acts as an internal standard or spike in laboratory QC protocols to ensure the precision and accuracy of analytical results.

Basic Information

Product Name	3,3',5,5'-Tetrachlorobiphenyl
CAS No.	33284-52-5
Molecular Formula	C12H6Cl4
Molecular Weight	291.99 g/mol
Synonyms	PCB 80; 3,3',5,5'-Tetrachloro-1,1'-biphenyl; 1,1'-Biphenyl, 3,3',5,5'-tetrachloro-; 2,2',4,4'-Tetrachlorobiphenyl (incorrect numbering but common alias); Tetrachlorobiphenyl; 3,3,5,5-Tetrachlorobiphenyl; Aroclor component (trace); BZ# 80
EINECS	Contact for details

Quality Control

Our high-purity 3,3',5,5'-Tetrachlorobiphenyl is manufactured and handled under strict quality systems. Each batch is characterized using advanced analytical techniques including GC-FID, GC-MS, and NMR to confirm identity and purity. Certificates of Analysis (COA) detailing lot-specific purity, chromatographic data, and trace solvent content are provided to ensure full traceability and compliance with research and analytical standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Keep the container sealed under an inert atmosphere if possible to prevent potential degradation. Store away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Identification (GC-MS)	Conforms to reference
Purity (GC-FID)	≥ 98.0% (area percentage)
Related Substances (GC)	Total other PCB congeners ≤ 1.5%
Solvent Residue (GC)	Meets ICH guidelines

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