Description

2',3,4,5,5'-Pentachlorobiphenyl is a specific, high-purity congener of polychlorinated biphenyls (PCBs), a well-studied class of synthetic organic chemicals. This compound is of significant value for research, analytical, and regulatory compliance applications due to its use as a certified reference material and an analytical standard. It is primarily needed by analytical laboratories, environmental testing facilities, and chemical manufacturers engaged in method development, quality control, and the calibration of instrumentation for the detection of persistent organic pollutants.

Application

• Primary use as a Certified Reference Material (CRM) for the calibration of analytical equipment like GC-MS and HPLC.
• Critical component in analytical method development and validation for PCB detection and quantification.
• Preparation of calibration standards and spiking solutions for environmental and food safety testing.
• Use in toxicological and environmental fate studies to understand the behavior of specific PCB congeners.
• Quality control standard for manufacturers producing or handling PCB-related chemicals or remediation materials.
• Supporting regulatory compliance testing for agencies monitoring POPs (Persistent Organic Pollutants) under international treaties like the Stockholm Convention.

Basic Information

Product Name	2',3,4,5,5'-Pentachlorobiphenyl
CAS No.	70424-70-3
Molecular Formula	C₁₂H₅Cl₅
Molecular Weight	326.43 g/mol
Synonyms	PCB 120; 2,3,4,5,5'-Pentachlorobiphenyl; 2,3,4,5,5'-Pentachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,3,4,5,5'-pentachloro-; Pentachlorobiphenyl (IUPAC); BZ# 120; Congener 120; Aroclor congener.
EINECS	Contact for details

Quality Control

Every batch of 2',3,4,5,5'-Pentachlorobiphenyl is produced and handled under strict quality management protocols to ensure identity, purity, and consistency. Our products undergo rigorous quality testing, including chromatographic purity analysis, to ensure compliance with the high standards required for reference materials. A comprehensive Certificate of Analysis (COA) detailing batch-specific results is provided with each shipment.

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 and incompatible materials. For long-term stability, storage under an inert atmosphere such as argon or nitrogen is recommended.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC/GC)	≥ 98.0% (Area %)
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility	Soluble in common organic solvents (e.g., hexane, acetone, toluene)

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