Description

3,3',4,4'-Tetracb (Pcb-77) (13C12, 99%) 40+/-2 Ug/Ml In Nonane is a high-purity, isotopically labeled reference standard of a specific polychlorinated biphenyl congener. This product is essential for achieving precise and reliable analytical results in environmental and regulatory testing. It is primarily used by analytical laboratories, research institutions, and quality control facilities involved in trace-level contaminant analysis.

Application

• Quantitative Analytical Reference Standard for the calibration of GC-MS, GC-ECD, and HPLC systems in environmental testing.
• Internal Standard (IS) or Surrogate Standard in EPA and other international methods for PCB analysis to correct for recovery and matrix effects.
• Method Development and Validation for establishing detection limits, linearity, and accuracy in analytical procedures.
• Quality Assurance/Quality Control (QA/QC) in commercial testing laboratories to ensure compliance with ISO/IEC 17025 and other accreditation standards.
• Research on PCB Congener-Specific Toxicity, environmental fate, and metabolism studies, leveraging the 13C12 label for precise tracking.
• Proficiency Testing and inter-laboratory comparison programs to benchmark analytical performance.

Basic Information

Product Name	3,3',4,4'-Tetracb (Pcb-77) (13C12, 99%) 40+/-2 Ug/Ml In Nonane
CAS No.	105600-23-5
Molecular Formula	12C12H6Cl4 / 13C12H6Cl4 (labeled)
Molecular Weight	~291.99 (unlabeled); ~303.99 (13C12 labeled)
Synonyms	PCB 77; 3,3',4,4'-Tetrachlorobiphenyl; 3,3',4,4'-Tetrachlorobiphenyl-13C12; 3,3',4,4'-Tetrachloro-1,1'-biphenyl; 3,3',4,4'-TCB; [13C12]-PCB 77; Tetrachlorobiphenyl (3,3',4,4'-); Aroclor congener reference standard.
EINECS	Contact for details

Quality Control

Every batch of this isotopically labeled reference material is manufactured and verified under strict quality protocols. The 99% isotopic purity (13C12) and 40 +/-2 µg/mL concentration in nonane are critically controlled parameters. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) with detailed chromatographic data are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C (refrigerated) to maintain solution stability and minimize solvent evaporation due to the highly volatile nature of nonane. For long-term storage, consider freezing at -20°C. Allow the vial to equilibrate to room temperature before opening.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow solution
Identification (IR/MS)	Conforms to structure of 3,3',4,4'-Tetrachlorobiphenyl-13C12
Concentration	40 ± 2 µg/mL in Nonane
Isotopic Purity (13C12)	≥ 99%
Chemical Purity (HPLC/GC)	≥ 98%
Solvent (Nonane) Purity	Suitable for trace analysis

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