Description

2,2',5-Trichlorobiphenyl is a specific congener of polychlorinated biphenyls (PCBs), a well-studied class of synthetic organic chemicals. This compound is of significant importance for research, analytical, and regulatory compliance purposes, serving as a critical reference standard and a subject for environmental fate studies. It is primarily needed by analytical laboratories, environmental testing facilities, and chemical manufacturers engaged in research, method development, and quality control for legacy pollutant analysis.

Application

• Analytical Reference Standard: Primary use as a certified reference material (CRM) for the calibration of gas chromatography (GC) and mass spectrometry (MS) instruments in environmental and food safety testing.
• Environmental Fate and Toxicology Research: Used in scientific studies to understand the degradation, bioaccumulation, and toxicological profile of specific PCB congeners in ecosystems.
• Method Development and Validation: Essential for developing and validating analytical methods for the detection and quantification of PCBs in complex matrices like soil, water, sediment, and biological tissues.
• Quality Control/Quality Assurance (QC/QA): Serves as a spike or internal standard in laboratory QC protocols to ensure accuracy and precision in PCB analysis for regulatory compliance.
• Regulatory Compliance Testing: Used by industries and consultancies to test for PCB contamination to comply with regulations such as TSCA in the US and POPs regulations globally.
• Chemical Synthesis Intermediate: Employed in specialized organic synthesis for the preparation of other halogenated aromatic compounds for research purposes.

Basic Information

Product Name	2,2',5-Trichlorobiphenyl
CAS No.	37680-65-2
Molecular Formula	C₁₂H₇Cl₃
Molecular Weight	257.54 g/mol
Synonyms	PCB 18; 2,2',5-Trichloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,2',5-trichloro-; 2,2',5-Trichlorodiphenyl; 2,5,2'-Trichlorobiphenyl; Biphenyl, 2,2',5-trichloro-; NSC 17920; Trichlorobiphenyl (mixed isomers reference)
EINECS	253-602-6

Quality Control

Our 2,2',5-Trichlorobiphenyl is produced and handled under strict quality management protocols. Each batch undergoes rigorous identity confirmation and purity analysis using advanced chromatographic and spectroscopic techniques. Certificates of Analysis (COA) detailing lot-specific purity, chromatographic data, and storage conditions are available upon request to support your research and compliance documentation needs.

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 heat, sparks, and open flame. For long-term storage under inert atmosphere, please contact us for specific recommendations.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or powder
Identification (IR)	Conforms to structure
Assay (HPLC/GC)	≥ 98.0% (Area %)
Related Substances (HPLC/GC)	Total impurities ≤ 2.0%
Melting Point	Contact for details
Solubility	Soluble in common organic solvents (e.g., hexane, acetone, methanol)

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