Description

3,4,4'-Tricb (Pcb-37) (13C12, 99%) 40+/-2 Ug/Ml In Nonane is a high-purity, stable-isotope-labeled analytical standard, specifically formulated as a solution in nonane. This product is essential for ensuring the accuracy and traceability of quantitative analyses in environmental and food safety testing. It is primarily required by analytical laboratories, regulatory bodies, and research institutions engaged in the precise detection and quantification of polychlorinated biphenyl (PCB) congeners.

Application

• Internal Standard for GC-MS/GC-ECD: Used as a quantitative reference for the analysis of PCB-37 and related congeners in complex matrices.
• Environmental Monitoring: Critical for calibrating instruments to detect PCB contamination in soil, sediment, and water samples as per EPA methods.
• Food and Feed Safety Testing: Enables accurate measurement of PCB residues to ensure compliance with global food safety regulations (e.g., EU, FDA).
• Method Development and Validation: Serves as a key component in developing, optimizing, and validating new analytical protocols for chlorinated hydrocarbons.
• Quality Assurance/Quality Control (QA/QC): Employed in laboratory proficiency testing and as a spike recovery standard to verify analytical method performance.
• Toxicological and Metabolic Studies: Used in research to track the fate, distribution, and transformation of specific PCB congeners using stable isotope tracing.

Basic Information

Product Name	3,4,4'-Tricb (Pcb-37) (13C12, 99%) 40+/-2 Ug/Ml In Nonane
CAS No.	208263-79-0
Molecular Formula	12C12H5Cl3 / 13C12H5Cl3 (Labeled)
Molecular Weight	~257.5 (Unlabeled) / ~269.5 (13C12 Labeled)
Synonyms	PCB 37; 3,4,4'-Trichlorobiphenyl; 3,4,4'-Trichloro-1,1'-biphenyl; 3,4,4'-Trichlorodiphenyl; [13C12]-3,4,4'-Trichlorobiphenyl; Carbon-13 labeled PCB 37; 3,4,4'-Tricb; IUPAC: 1,2-Dichloro-4-(4-chlorophenyl)benzene (unlabeled form).
EINECS	Contact for details

Quality Control

Every batch of this certified reference material is produced and analyzed under strict quality-controlled conditions. The concentration (40 ± 2 µg/mL in nonane) and isotopic purity (99% 13C12) are verified using a combination of GC-MS and NMR spectroscopy. A comprehensive Certificate of Analysis (COA) is supplied with each unit, detailing the exact concentration, purity, and analytical methods used to ensure traceability and compliance with ISO Guide 34 and ISO/IEC 17025 principles.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C (refrigerated) to minimize solvent evaporation and maintain long-term concentration stability. Due to the highly volatile nature of the nonane solvent, ensure containers are kept upright in a well-ventilated area and allowed to equilibrate to room temperature before opening.

Specification

Item	Specification
Product Form	Solution in Nonane
Certified Concentration	40 ± 2 µg/mL
Analyte	3,4,4'-Trichlorobiphenyl (PCB-37)
Isotopic Labeling	13C12 (Ring-labeled)
Isotopic Purity (13C)	≥ 99%
Chemical Purity (HPLC)	≥ 98%
Solvent	Nonane (HPLC/Residue Grade)
Identification (GC-MS)	Conforms

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