Description

3,3',4-Trichlorobiphenyl is a specific, high-purity polychlorinated biphenyl (PCB) congener, identified by CAS NO 37680-69-6. This compound is critical for research, analytical, and industrial applications requiring precise chemical standards and reference materials. It is primarily utilized by analytical laboratories, environmental testing facilities, and chemical manufacturers engaged in method development, calibration, and quality control protocols.

Application

• Analytical Reference Standard: Used as a certified reference material (CRM) for the calibration of instruments like GC-MS and HPLC in environmental and food safety testing.
• Environmental Analysis: Serves as a critical standard for quantifying PCB contamination in soil, water, sediment, and air samples to comply with regulatory monitoring (e.g., EPA methods).
• Toxicological Research: Employed in scientific studies to investigate the metabolism, environmental fate, and specific toxicological effects of individual PCB congeners.
• Method Development & Validation: Essential for developing, optimizing, and validating new analytical methods for the detection and quantification of PCBs.
• Quality Control/Assurance: Used by manufacturers of electrical equipment and other industries to test for trace PCB presence in materials and products.
• Chemical Synthesis Intermediate: Acts as a building block or precursor in specialized organic synthesis for research purposes.

Basic Information

Product Name	3,3',4-Trichlorobiphenyl
CAS No.	37680-69-6
Molecular Formula	C₁₂H₇Cl₃
Molecular Weight	257.54 g/mol
Synonyms	PCB 35; 3,3',4-Trichloro-1,1'-biphenyl; 1,1'-Biphenyl, 3,3',4-trichloro-; 3,4,3'-Trichlorobiphenyl; Biphenyl, 3,3',4-trichloro-; NSC 89360; PCB No. 35; Trichlorobiphenyl (mixed isomers)
EINECS	253-633-8

Quality Control

Our 3,3',4-Trichlorobiphenyl is produced and handled under strict quality management protocols. Each batch is analyzed using advanced chromatographic techniques to ensure high purity and congener-specific identity. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and chromatographic profile is provided with every shipment to support your research and compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at 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 structure
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Melting Point	Contact for details

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