Description

3,3',4,4',5-Pentachlorobiphenyl is a specific congener of the polychlorinated biphenyl (PCB) family, identified by the CAS number 57465-28-8. This compound is of significant importance for research and analytical reference purposes, particularly in environmental monitoring and toxicological studies. It is primarily needed by analytical laboratories, environmental testing facilities, and research institutions focused on persistent organic pollutant (POP) analysis, regulatory compliance, and method development.

Application

• Analytical Reference Standard: Serves as a certified high-purity standard for the accurate quantification of PCBs in complex matrices via GC-MS or GC-ECD.
• Environmental Monitoring: Used for calibrating equipment and validating methods in the analysis of soil, water, sediment, and biota samples for PCB contamination.
• Toxicological Research: Employed in scientific studies to investigate the specific biological effects, metabolic pathways, and environmental fate of dioxin-like PCB congeners.
• Quality Control & Method Development: Essential for developing, verifying, and maintaining the accuracy and precision of analytical protocols in compliance with EPA, EU, and other international standards.
• Regulatory Compliance Testing: A critical component for laboratories performing mandatory testing to ensure products and environmental releases comply with global POPs regulations (e.g., Stockholm Convention).
• Forensic Analysis: Used in source identification and fingerprinting of PCB mixtures in environmental forensic investigations.

Basic Information

Product Name	3,3',4,4',5-Pentachlorobiphenyl
CAS No.	57465-28-8
Molecular Formula	C12H5Cl5
Molecular Weight	326.43 g/mol
Synonyms	PCB 126; 3,3',4,4',5-PentaCB; 1,1'-Biphenyl, 3,3',4,4',5-pentachloro-; Pentachlorobiphenyl (3,3',4,4',5-); IUPAC: 3,3',4,4',5-Pentachloro-1,1'-biphenyl; Aroclor congener 126; 3,4,5,3',4'-Pentachlorobiphenyl
EINECS	Contact for details

Quality Control

Our high-purity reference materials are produced and verified under strict quality management protocols. Each batch undergoes comprehensive analysis using advanced techniques including GC-MS and HPLC to confirm identity and purity. Certificates of Analysis (COA) are provided, detailing lot-specific purity, chromatographic data, and trace impurity profiles. We support compliance with relevant analytical standards, and specifications can be tailored to meet specific research or regulatory requirements.

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. Keep the container securely sealed in a well-ventilated area.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 98.0%
Purity (HPLC)	≥ 97.5%
Related Substances (GC)	Total impurities ≤ 2.0%
Solubility	Soluble in common organic solvents (e.g., toluene, hexane)

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