Description

2,2',3,3',4,4',6-Heptachlorobiphenyl is a specific, high-purity congener of polychlorinated biphenyls (PCBs), a class of synthetic organic chemicals. This compound is of significant importance for analytical and research purposes, serving as a critical reference standard for environmental monitoring, toxicological studies, and regulatory compliance testing. It is primarily needed by analytical laboratories, environmental testing facilities, and research institutions focused on persistent organic pollutant (POP) analysis, PCB fate and transport studies, and method development and validation.

Application

• Analytical Reference Standard: Primary use as a certified reference material (CRM) for the calibration of GC-MS, GC-ECD, and other analytical instrumentation.
• Environmental Analysis: Quantification and congener-specific profiling of PCBs in soil, water, sediment, and air samples for environmental impact assessments.
• Food and Feed Safety Testing: Used in methods to detect and quantify PCB residues in food products, animal feed, and edible oils to ensure regulatory compliance.
• Toxicological Research: Serves as a precise congener in studies investigating the metabolism, bioaccumulation, and specific toxic effects (e.g., endocrine disruption) of PCBs.
• Method Development & Validation: Essential for developing, optimizing, and validating new analytical protocols for PCB detection and quantification in complex matrices.
• Quality Control/Quality Assurance (QC/QA): Used as a spike or internal standard to monitor the accuracy, precision, and recovery of analytical procedures within laboratory workflows.
• Regulatory Compliance: Supports testing mandated by global regulations concerning POPs (Stockholm Convention), PCBs in waste, and consumer product safety.

Basic Information

Product Name	2,2',3,3',4,4',6-Heptachlorobiphenyl
CAS No.	52663-71-5
Molecular Formula	C₁₂H₃Cl₇
Molecular Weight	395.32 g/mol
Synonyms	PCB 170; 2,2',3,3',4,4',6-Heptachloro-1,1'-biphenyl; 1,1'-Biphenyl, 2,2',3,3',4,4',6-heptachloro-; Heptachlorobiphenyl (IUPAC); BZ# 170; Congener 170; Aroclor congener 170; 2,2',3,3',4,4',6-HeptaCB
EINECS	258-102-8

Quality Control

Our high-purity reference standards are produced and verified under strict quality management protocols. Each batch is characterized using orthogonal analytical techniques including GC-MS, GC-ECD, and NMR to confirm identity and establish purity. A comprehensive Certificate of Analysis (COA) is provided, detailing the certified purity value, analytical methods, batch-specific chromatograms, and traceability information. Our quality system is designed to meet the exacting requirements of ISO 17034 for reference material producers.

Storage

Preserve in a tightly closed container, protected from light. Store the sealed vial or ampoule in a cool, dry place at a recommended temperature of -20°C to -10°C for long-term stability. For short-term or working standard solutions, store at 2-8°C. Allow the sealed container to reach ambient temperature before opening to prevent moisture condensation. Solutions should be prepared in appropriate organic solvents and stored under inert atmosphere if necessary.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or solution
Identification (IR)	Conforms to reference spectrum
Identification (GC-MS)	Retention time and mass spectrum conform to reference
Purity (GC-ECD/FID)	≥98.0% (Certified value provided on COA)
Purity (HPLC)	≥98.0%
Related Substances (GC)	Total other PCB congeners <2.0%
Solvent (for solutions)	Isooctane, Toluene, or as specified
Concentration (for solutions)	10 µg/mL, 50 µg/mL, or as specified (±5% uncertainty)

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