Description

2,2',3,4,5,5'-Hexachlorobiphenyl is a specific, high-purity congener of polychlorinated biphenyls (PCBs). This compound is critical for analytical and research applications where precise chemical identity and purity are paramount. It is primarily utilized by environmental testing laboratories, regulatory agencies, and academic researchers for use as an analytical reference standard in the calibration of equipment and the quantification of PCBs in complex matrices.

Application

• Analytical Reference Standard: Primary use for calibrating GC-MS, GC-ECD, and HPLC systems in environmental and food safety testing.
• Environmental Monitoring: Used in method development and validation for detecting and quantifying PCB congeners in soil, water, sediment, and air samples.
• Toxicological Research: Serves as a precise congener for studying the specific biological effects, metabolic pathways, and persistence of PCBs.
• Quality Control & Assurance: Employed as a certified reference material (CRM) in laboratory proficiency testing and internal quality control programs.
• Regulatory Compliance Testing: Essential for laboratories performing analyses to comply with global regulations (e.g., EPA, EU) concerning PCB contamination.
• Forensic Analysis: Aids in chemical fingerprinting for source identification and tracking of PCB contamination in environmental forensic investigations.

Basic Information

Product Name	2,2',3,4,5,5'-Hexachlorobiphenyl
CAS No.	51908-16-8
Molecular Formula	C₁₂H₄Cl₆
Molecular Weight	360.88 g/mol
Synonyms	PCB 138; 2,2',3,4,5,5'-Hexachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,2',3,4,5,5'-hexachloro-; BZ# 138; IUPAC Name: 1,2,3,5-tetrachloro-4-(2,3,5-trichlorophenyl)benzene; Congener 138; Aroclor congener 138
EINECS	Contact for details

Quality Control

Our high-purity 2,2',3,4,5,5'-Hexachlorobiphenyl is produced and handled under strict quality protocols to ensure identity, purity, and stability for critical analytical work. Each batch is characterized using advanced analytical techniques including GC-MS and HPLC. A comprehensive Certificate of Analysis (COA) detailing purity, congener-specific identity confirmation, and chromatographic data is provided to guarantee traceability and meet the stringent requirements of ISO/IEC 17025 accredited laboratories.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (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 crystalline solid or solution
Identification (GC-MS)	Conforms to reference spectrum
Purity (GC-FID/ECD)	≥ 98.0% (area percentage)
Related Congeners (GC)	≤ 1.0% (total)
Solvent (if applicable)	Specified on COA (e.g., Isooctane, Toluene)
Concentration (if solution)	As specified on label (e.g., 10 µg/mL ± 5%)

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