Description

2,3,4,4',5-Pentachlorobiphenyl is a specific congener of polychlorinated biphenyls (PCBs), a well-studied class of synthetic organic chemicals. This compound is of significant importance for analytical and research purposes, serving as a critical reference standard for environmental monitoring, toxicological studies, and regulatory compliance testing. It is primarily needed by analytical laboratories, environmental testing facilities, and research institutions focused on persistent organic pollutant (POP) analysis, legacy contamination assessment, and method development.

Application

• Analytical Reference Standard: Primary use as a certified reference material (CRM) for the calibration of analytical instruments like GC-MS and HPLC in environmental and food testing.
• Environmental Monitoring: Quantification and congener-specific analysis of PCB contamination in soil, sediment, water, and air samples to assess pollution levels and track sources.
• Toxicological Research: Used in laboratory studies to investigate the specific biological effects, metabolic pathways, and toxicity profiles of individual PCB congeners.
• Quality Control & Method Validation: Essential for developing, validating, and ensuring the accuracy and precision of analytical methods for PCB detection in compliance with EPA, EU, and other international standards.
• Forensic Analysis: Aiding in the chemical fingerprinting of PCB mixtures to identify the origin and history of contamination events.
• Regulatory Compliance Testing: Supporting industries and consultancies in testing products and waste streams to ensure adherence to strict global regulations on POPs like the Stockholm Convention.

Basic Information

Product Name	2,3,4,4',5-Pentachlorobiphenyl
CAS No.	74472-37-0
Molecular Formula	C12H5Cl5
Molecular Weight	326.43 g/mol
Synonyms	PCB 118; 2,3,4,4',5-Pentachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,3,4,4',5-pentachloro-; 2,3,4,4',5-PentaCB; 2,3,4,4',5-Pentachlorodiphenyl; Pentachlorobiphenyl (congener 118); BZ# 118; IUPAC Name: 1,2,3,4,5-Pentachloro-4'-chlorobiphenyl (alternate numbering)
EINECS	Contact for details

Quality Control

Every batch of our 2,3,4,4',5-Pentachlorobiphenyl is manufactured and handled under strict quality protocols to ensure the highest purity and consistency required for reference standard applications. Our quality assurance includes rigorous identity confirmation, purity verification, and stability testing. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing batch-specific results for purity, related substances, and analytical methods. We support compliance with relevant guidelines 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 in a freezer (-20°C).

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR / NMR)	Conforms to structure
Purity (HPLC / GC)	≥ 98.0% (Area %)
Related Substances (HPLC)	Total impurities ≤ 2.0%
Individual Unknown Impurity	≤ 0.5%
Solubility	Soluble in common organic solvents (e.g., hexane, toluene, DMSO)

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