Description

3,4,4',5-Tetrachlorobiphenyl is a specific, high-purity polychlorinated biphenyl (PCB) congener. This compound is critical for analytical and research applications where precise chemical standards are required for calibration, method development, and environmental analysis. It serves as an essential reference material for laboratories in environmental monitoring, toxicology studies, and regulatory compliance testing focused on persistent organic pollutants (POPs).

Application

• Analytical Reference Standard: Primary use as a certified reference material (CRM) for the quantification of PCBs in environmental samples via GC-MS or GC-ECD.
• Environmental Monitoring: Calibration standard for testing soil, water, sediment, and biota for PCB contamination as per EPA and international methods.
• Toxicological Research: Used in studies investigating the biochemical pathways, metabolic fate, and toxic effects of specific PCB congeners.
• Method Development & Validation: Essential for developing, optimizing, and validating analytical chromatography methods in contract research and testing laboratories.
• Quality Control/Assurance: Serves as an internal standard or spike for recovery studies in laboratory quality control protocols.
• Regulatory Compliance Testing: Used to ensure analytical systems meet the requirements for compliance with regulations like the Stockholm Convention on POPs.

Basic Information

Item	Detail
Product Name	3,4,4',5-Tetrachlorobiphenyl
CAS No.	70362-50-4
Molecular Formula	C12H6Cl4
Molecular Weight	291.99 g/mol
Synonyms	PCB 81; 3,4,4',5-Tetrachloro-1,1'-biphenyl; 1,1'-Biphenyl, 3,4,4',5-tetrachloro-; Tetrachlorobiphenyl (IUPAC); IUPAC No. 81; BZ No. 81; Congener 81; 3,4,4',5-TeCB
EINECS	Contact for details

Quality Control

Every batch of our 3,4,4',5-Tetrachlorobiphenyl is produced and analyzed to meet the exacting standards required for high-purity reference materials. Our rigorous quality testing includes identity confirmation by multiple spectroscopic techniques and purity assessment by high-resolution chromatography. A comprehensive Certificate of Analysis (COA) detailing batch-specific purity, chromatographic data, and storage conditions is provided with each shipment to ensure full traceability and support your quality systems.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). For long-term stability, storage at 2-8°C is recommended. Handle and store in accordance with all applicable laboratory safety regulations.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Identification (GC/MS)	Conforms to structure
Purity (HPLC)	≥ 98.0% (Area %)
Purity (GC)	≥ 98.0% (Area %)
Related Substances (HPLC/GC)	Total other PCBs ≤ 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.