Description

2,3',4,5,5'-Pentachlorobiphenyl is a specific congener of polychlorinated biphenyls (PCBs), a class of synthetic organic chemicals. This compound is of significant interest for analytical reference standards and environmental research, enabling precise identification and quantification in complex matrices. It is primarily required by analytical laboratories, environmental testing facilities, and research institutions focused on legacy pollutant analysis and regulatory compliance.

Application

• Environmental Analysis Reference Standard: Used as a certified reference material (CRM) for the calibration of analytical instruments like GC-MS and HPLC in the detection of PCBs in soil, water, and sediment samples.
• Toxicological Research: Serves as a pure congener for studying the specific biological effects, metabolic pathways, and persistence of individual PCB compounds in ecological and health studies.
• Method Development and Validation: Essential for developing, optimizing, and validating new analytical methods to meet stringent regulatory requirements for PCB monitoring.
• Quality Control/Quality Assurance (QC/QA): Employed in laboratory proficiency testing and as an internal standard to ensure the accuracy and precision of analytical data in commercial testing labs.
• Regulatory Compliance Testing: Used to verify compliance with international regulations (e.g., Stockholm Convention, EPA methods) concerning permissible levels of PCBs in industrial discharges and consumer products.
• Forensic and Source Identification Studies: Aids in chemical fingerprinting to trace the source and history of PCB contamination in environmental forensic investigations.

Basic Information

Product Name	2,3',4,5,5'-Pentachlorobiphenyl
CAS No.	68194-12-7
Molecular Formula	C₁₂H₅Cl₅
Molecular Weight	326.43 g/mol
Synonyms	PCB 118; 2,3',4,4',5-Pentachlorobiphenyl (IUPAC); 2,3,4,4',5-Pentachlorobiphenyl; 3,4,4',5-Tetrachloro-2-biphenylyl chloride; BZ# 118; PCB Congener 118; Aroclor 1254 Component; Polychlorinated Biphenyl 118
EINECS	Contact for details

Quality Control

Our high-purity 2,3',4,5,5'-Pentachlorobiphenyl is manufactured and handled under strict quality protocols to ensure identity, purity, and stability for critical analytical applications. Each batch is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, chromatographic data, and spectroscopic confirmation. We support compliance with ISO 17034 and ISO/IEC 17025 requirements for reference material producers and testing laboratories.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) in a dry, well-ventilated area dedicated for reference standards. Keep the container sealed under an inert atmosphere if opened to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to reference spectrum
Identification (GC-MS)	Conforms to reference retention time and mass spectrum
Purity (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total other PCB congeners ≤ 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.