Description

2,2',3,5-Tetrachlorobiphenyl is a specific congener of polychlorinated biphenyls (PCBs), a class of synthetic organic chemicals. This compound is primarily utilized as a critical analytical standard and reference material for environmental monitoring, toxicological research, and regulatory compliance testing. It is essential for laboratories and research institutions focused on persistent organic pollutant (POP) analysis, environmental forensics, and the development of remediation strategies.

Application

• Analytical Reference Standard: Primary use as a certified standard for the calibration and quantification of PCBs in environmental samples (soil, water, sediment, biota) via GC-MS or GC-ECD.
• Toxicological Research: Used in studies to investigate the specific congener's metabolism, bioaccumulation potential, and toxic effects (e.g., endocrine disruption, neurotoxicity).
• Method Development & Validation: Serves as a key component in developing and validating new analytical methods for POP detection and separation.
• Environmental Forensics: Acts as a marker for source identification and fate/transport modeling of PCB contamination in the environment.
• Quality Control & Assurance: Employed in laboratory QC protocols to ensure accuracy and precision in PCB analysis for regulatory reporting.
• Regulatory Compliance Testing: Essential for testing laboratories to comply with global regulations concerning PCB monitoring (e.g., Stockholm Convention, EPA methods).

Basic Information

Product Name	2,2',3,5-Tetrachlorobiphenyl
CAS No.	70362-46-8
Molecular Formula	C12H6Cl4
Molecular Weight	291.99 g/mol
Synonyms	PCB 44; 2,2',3,5-Polychlorinated Biphenyl; 2,2',3,5-TCB; Biphenyl, 2,2',3,5-tetrachloro-; 2,3,2',5-Tetrachlorobiphenyl; 2,2',3,5-Tetrachloro-1,1'-biphenyl; Aroclor congener (PCB 44)
EINECS	Contact for details

Quality Control

Every batch of 2,2',3,5-Tetrachlorobiphenyl is produced and analyzed under strict quality protocols to ensure the highest standard of purity and congener specificity required for analytical applications. Our products undergo rigorous identity confirmation and purity verification using advanced chromatographic and spectroscopic techniques. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing batch-specific data including purity, congener profile, and solvent content.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (typically 15-25°C). Keep away from heat and incompatible materials. For long-term storage, consider storage at 2-8°C.

Specification

Item	Specification
Appearance	White to off-white solid or solution (as specified)
Identification (IR / NMR)	Conforms to structure
Purity (GC / HPLC)	≥98.0% (Area %) or as per customer grade
Congener Specificity	Confirmation of 2,2',3,5-Tetrachlorobiphenyl isomer
Solvent Content (if applicable)	Specified on COA

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