Description

2,2'-Dicb (Pcb-4) (13C12, 99%) 40+/-2 Ug/Ml In Nonane is a high-purity, isotopically labeled standard solution essential for advanced analytical chemistry. This product provides a critical reference material for the precise quantification and method validation of polychlorinated biphenyl (PCB) congeners in complex matrices. It is primarily required by analytical laboratories, environmental testing facilities, and research institutions engaged in trace-level contaminant analysis, regulatory compliance monitoring, and forensic environmental studies.

Application

• Internal Standard for GC-MS/GC-ECD Analysis: Used as a quantitative reference for the analysis of PCBs in environmental samples (soil, water, sediment).
• Method Development and Validation: Critical for establishing and verifying the accuracy, precision, and detection limits of analytical procedures for halogenated contaminants.
• Quality Assurance/Quality Control (QA/QC): Employed in spike/recovery experiments and as a system performance check to ensure data integrity in compliance with ISO/IEC 17025.
• Environmental Monitoring and Forensics: Enables precise tracking and source identification of PCB contamination in compliance with regulations like the Stockholm Convention.
• Food and Feed Safety Testing: Used in the analysis of PCB residues to ensure compliance with maximum residue levels (MRLs) set by authorities such as the FDA and EFSA.
• Calibration Standard: For creating calibration curves with high accuracy, essential for instrument calibration in accredited laboratories.
• Research on PCB Metabolism and Fate: The carbon-13 (13C) labeled structure allows for differentiation from native compounds in metabolic and environmental degradation studies.

Basic Information

Product Name	2,2'-Dicb (Pcb-4) (13C12, 99%) 40+/-2 Ug/Ml In Nonane
CAS No.	234432-86-1
Molecular Formula	13C12H8Cl4
Molecular Weight	~299.98 (for 13C12 labeled)
Synonyms	2,2'-Dichlorobiphenyl-13C12; PCB 4-13C12; 2,2'-Dichloro-1,1'-biphenyl-13C12; IUPAC: 1,1'-Biphenyl-13C12, 2,2'-dichloro-; Isotopically Labeled PCB Congener 4; [13C12]-2,2'-DCB; 2,2'-DCB-13C12; EC 000-000-0 (Placeholder - Contact for EINECS)

Quality Control

Every batch of our isotopically labeled standards is manufactured and analyzed under strict quality systems. The product undergoes rigorous testing to ensure identity, purity (99% isotopic and chemical), and precise concentration (40 ±2 µg/mL in nonane). Our quality commitment aligns with the needs of accredited laboratories. Comprehensive Certificates of Analysis (COA) are provided with each shipment, detailing batch-specific results from techniques like GC-MS, NMR, and quantitative NMR (qNMR) for concentration verification.

Storage

Preserve in the original tightly closed container, protected from light. Store at 2-8°C (refrigerated). Due to its high volatility and the nonane solvent, ensure containers are securely sealed and stored upright in a well-ventilated area. For long-term stability, storage at -20°C is recommended. Allow the solution to reach room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	Clear, colorless solution
Concentration	40 ± 2 µg/mL in Nonane
Chemical Purity (by GC)	≥ 99%
Isotopic Purity (13C)	≥ 99%
Isotopic Enrichment	≥ 99 atom % 13C
Solvent (Nonane) Purity	≥ 99%
Identification (NMR/GC-MS)	Conforms to structure
Water Content (KF)	< 0.1%

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