Description

C-132,3,7,8-Tcdd is a high-purity, specialized chlorinated dibenzo-p-dioxin compound, identified by CAS No. 76523-40-5. This compound is of critical importance for analytical and research applications, serving as a certified reference material for the precise calibration of instruments and validation of methods in environmental and toxicological analysis. It is primarily required by analytical laboratories, environmental testing facilities, and research institutions focused on persistent organic pollutant (POP) detection, dioxin analysis, and regulatory compliance monitoring.

Application

• Primary use as a certified reference standard (CRM) for the quantification of dioxins and furans.
• Calibration of high-resolution gas chromatography/mass spectrometry (HRGC/HRMS) systems in environmental analysis.
• Method development and validation for regulatory compliance testing (e.g., EPA Method 1613, 8290).
• Quality control and assurance in analytical laboratories performing food and feed safety analysis for dioxin contamination.
• Research applications in environmental chemistry and toxicology studies on the fate and transport of chlorinated dioxins.
• Preparation of spiked samples for proficiency testing and laboratory inter-comparison exercises.

Basic Information

Product Name	C-132,3,7,8-Tcdd
CAS No.	76523-40-5
Molecular Formula	C₁₂H₄Cl₄O₂
Molecular Weight	321.97 g/mol
Synonyms	1,3,7,8-Tetrachlorodibenzo-p-dioxin; 1,3,7,8-TCDD; 1,3,7,8-Tetrachlorodibenzodioxin; 1,3,7,8-Tetrachlorooxanthrene; 1,3,7,8-Tetrachlorodibenzo[b,e][1,4]dioxin; 1,3,7,8-Tetrachlorodibenzo[1,4]dioxin; 1,3,7,8-T4CDD; 1,3,7,8-TetraCDD
EINECS	Contact for details

Quality Control

Every batch of C-132,3,7,8-Tcdd is manufactured and analyzed under strict quality management systems to ensure the highest standards of purity and traceability required for reference materials. Our products undergo rigorous quality testing, including identity confirmation by multiple orthogonal methods and precise purity determination. Certificates of Analysis (COA) are provided, detailing batch-specific results, certified concentration, and measurement uncertainty.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Keep away from strong acids and organic solvents. Due to its light-sensitive nature, all handling should minimize exposure to light.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to reference spectrum
Identification (GC/MS)	Conforms to reference retention time and mass spectrum
Purity (HPLC)	≥ 98.0%
Certified Concentration	Typically 10 - 50 µg/mL in nonane or toluene (Batch-specific)
Expanded Uncertainty (k=2)	< 5% of stated concentration

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