Description

2,2',3,3',5,5'-Hexachlorobiphenyl is a specific, high-purity congener of polychlorinated biphenyls (PCBs). This compound is of significant interest for research, analytical, and regulatory compliance purposes due to its defined chemical structure. It is primarily utilized by analytical laboratories, environmental testing facilities, and research institutions engaged in method development, toxicology studies, and the calibration of detection equipment.

Application

• Analytical Reference Standard: Serves as a critical certified reference material (CRM) for the accurate quantification of PCBs in environmental and biological samples via GC-MS or HPLC.
• Environmental Monitoring: Used in the analysis of soil, water, and air samples to assess contamination levels and compliance with international regulations like the Stockholm Convention.
• Toxicological Research: Employed in scientific studies to investigate the specific metabolic pathways, bioaccumulation potential, and health effects of individual PCB congeners.
• Method Development & Validation: Essential for developing, optimizing, and validating new analytical methods for persistent organic pollutant (POP) detection.
• Quality Control & Assurance: Acts as an internal standard or spike in laboratory QC/QA protocols to ensure the accuracy and precision of analytical data.
• Calibration Standard: Used to calibrate chromatographic and spectrometric instrumentation for reliable and reproducible results in PCB analysis.

Basic Information

Product Name	2,2',3,3',5,5'-Hexachlorobiphenyl
CAS No.	35694-04-3
Molecular Formula	C₁₂H₄Cl₆
Molecular Weight	360.88 g/mol
Synonyms	PCB 128; 2,2',3,3',5,5'-Hexachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,2',3,3',5,5'-hexachloro-; Hexachlorobiphenyl (IUPAC); BZ# 128; Congener 128; Aroclor congener 128
EINECS	Contact for details

Quality Control

Every batch of 2,2',3,3',5,5'-Hexachlorobiphenyl is produced and handled under strict quality protocols to ensure identity, purity, and stability. Our products undergo rigorous analytical testing, including chromatographic purity verification, to meet the exacting standards required for reference materials. Certificates of Analysis (COA) detailing lot-specific purity, analytical methods, and traceability are available upon request to support your compliance and documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to reference spectrum
Purity (GC)	≥ 98.0%
Related Substances (GC)	Total other PCB congeners ≤ 2.0%

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