Description

2,4,4',5-Tetrachlorobiphenyl is a specific congener of polychlorinated biphenyls (PCBs), a well-studied 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 serves researchers, analytical laboratories, and quality control specialists in industries focused on environmental safety, chemical analysis, and legacy pollutant remediation who require high-purity, well-characterized substances for precise measurement and calibration.

Application

• Analytical Reference Standard: Primary use as a certified standard for the calibration of GC-MS, HPLC, and other analytical instruments in environmental testing.
• Environmental Monitoring & Research: Used to quantify and study the presence, fate, and transport of PCB congeners in soil, water, sediment, and biota samples.
• Toxicological Studies: Serves as a pure congener for investigating the specific biochemical, toxicological, and ecological effects of PCBs.
• Method Development & Validation: Essential for developing, optimizing, and validating analytical methods for PCB detection and quantification in complex matrices.
• Quality Control & Assurance: Employed in laboratory QC protocols to ensure the accuracy and precision of PCB analysis for regulatory reporting.
• Regulatory Compliance Testing: Used as a standard in testing to comply with international regulations (e.g., Stockholm Convention, EPA methods) governing persistent organic pollutants (POPs).
• Educational & Forensic Analysis: Applied in academic settings for teaching advanced analytical chemistry and in forensic investigations to identify pollutant sources.

Basic Information

Product Name	2,4,4',5-Tetrachlorobiphenyl
CAS No.	32690-93-0
Molecular Formula	C₁₂H₆Cl₄
Molecular Weight	291.98 g/mol
Synonyms	PCB 74; 2,4,4',5-Tetrachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,4,4',5-tetrachloro-; 2,4,5,4'-Tetrachlorobiphenyl; BZ# 74; Aroclor 1242/1254 Component; Congener 74; 2,4,4',5-TCB
EINECS	Contact for details

Quality Control

Our high-purity analytical standards are produced and verified under strict quality management protocols. Each batch of 2,4,4',5-Tetrachlorobiphenyl undergoes comprehensive analysis using techniques including GC-FID, GC-MS, and HPLC to confirm identity, purity, and congener specificity. We provide traceable Certificates of Analysis (COA) with each product, detailing batch-specific results. Our commitment ensures material suitability for demanding applications in regulatory compliance and research, aligning with principles of ISO 17034 for reference material producers.

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 strong acids and organic solvents. For long-term stability, consider storage under inert atmosphere at lower temperatures (e.g., -20°C).

Specification

Item	Specification
Appearance	White to off-white crystalline solid or powder
Identification (IR)	Conforms to reference spectrum
Purity (GC)	≥ 98.0% (Area Percent)
Purity (HPLC)	≥ 98.0% (Area Percent)
Related Congeners (GC-MS)	≤ 1.0% (Total)
Melting Point	Contact for details

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