Description

3,4,4'-Trichlorobiphenyl is a specific polychlorinated biphenyl (PCB) congener identified by the CAS number 38444-90-5. This compound is of significant interest in industrial research and analytical chemistry, particularly for environmental testing and method development. It serves as a critical reference standard for laboratories involved in the identification, quantification, and study of PCB contamination and toxicology.

Application

• Analytical Reference Standard: Primary use as a certified standard for calibrating equipment (GC, GC-MS, HPLC) in environmental and food safety testing.
• Environmental Analysis: Critical for the accurate quantification of PCB congeners in soil, water, sediment, and air samples to assess contamination levels.
• Toxicological Research: Used in scientific studies to investigate the metabolism, environmental fate, and specific toxic effects of individual PCB congeners.
• Method Development & Validation: Essential for developing, optimizing, and validating new analytical methods for PCB detection and separation.
• Quality Control: Serves as an internal or external standard in laboratory QC/QA protocols to ensure accuracy and precision in PCB analysis.
• Regulatory Compliance Testing: Supports testing to comply with international regulations (e.g., EPA, EU directives) concerning persistent organic pollutants (POPs).

Basic Information

Product Name	3,4,4'-Trichlorobiphenyl
CAS No.	38444-90-5
Molecular Formula	C12H7Cl3
Molecular Weight	257.54 g/mol
Synonyms	PCB 37; 1,2,4-Trichlorobiphenyl; 3,4,4'-Trichloro-1,1'-biphenyl; 3,4,4'-Trichlorodiphenyl; Biphenyl, 3,4,4'-trichloro-; IUPAC: 1,2,4-Trichlorobiphenyl
EINECS	Contact for details

Quality Control

We supply high-purity 3,4,4'-Trichlorobiphenyl suitable for use as an analytical standard. Every batch is produced and handled under strict quality protocols to ensure identity, purity, and stability. Comprehensive analysis is performed using advanced chromatographic and spectroscopic techniques. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming the specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Recommended long-term storage at 2-8°C. Keep away from heat and open flame.

Specification

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

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