Description

1,3,7,9-Tetrachlorodibenzo-p-Dioxin is a specific, high-purity chlorinated dioxin congener, identified by CAS NO 116889-70-4. This compound is of significant importance as a critical analytical standard and reference material for environmental monitoring and toxicological research. It is primarily needed by analytical laboratories, research institutions, and regulatory bodies involved in the detection, quantification, and study of persistent organic pollutants (POPs) and dioxin-like compounds.

Application

• Environmental Analysis Standard: Used as a certified reference material (CRM) for the calibration of GC-MS and HRGC-HRMS systems in the analysis of soil, water, and air samples for dioxin contamination.
• Toxicological Research: Serves as a precise chemical standard in studies investigating the structure-activity relationships, metabolic pathways, and biological impacts of chlorinated dioxins.
• Food and Feed Safety Testing: Employed as a quantitative standard in laboratories screening for dioxin and furan residues to ensure compliance with strict international food safety regulations (e.g., EU, FDA).
• Waste and Emission Monitoring: Essential for calibrating equipment used to monitor dioxin levels in industrial emissions, incinerator fly ash, and chemical waste.
• Method Development and Validation: Provides a known, pure substance for developing, optimizing, and validating new analytical methods for persistent organic pollutant detection.
• Quality Control and Proficiency Testing: Acts as a spike or control compound in inter-laboratory comparison studies and internal quality assurance programs for environmental testing labs.

Basic Information

Product Name	1,3,7,9-Tetrachlorodibenzo-p-Dioxin
CAS No.	116889-70-4
Molecular Formula	C₁₂H₄Cl₄O₂
Molecular Weight	321.97 g/mol
Synonyms	1,3,7,9-TCDD; 1,3,7,9-Tetrachlorodibenzo[b,e][1,4]dioxin; 1,3,7,9-Tetrachlorodibenzodioxin; NSC 174546; Tetrachlorodibenzo-p-dioxin (1,3,7,9- isomer); Dibenzo[b,e][1,4]dioxin, 1,3,7,9-tetrachloro-
EINECS	Contact for details

Quality Control

Our high-purity 1,3,7,9-Tetrachlorodibenzo-p-Dioxin is manufactured and handled under strict quality protocols to ensure integrity and traceability for analytical applications. Each batch is rigorously analyzed using state-of-the-art techniques including gas chromatography and mass spectrometry to confirm identity and purity. A comprehensive Certificate of Analysis (COA) detailing purity, chromatographic data, and storage conditions is provided with every shipment to support your compliance and research requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). For long-term stability, storage at -20°C under an inert atmosphere is recommended. Keep the container securely sealed in a dedicated, well-ventilated area.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 98.0%
Related Substances (GC)	Total impurities ≤ 2.0%
Solubility	Soluble in common organic solvents (e.g., toluene, DMSO)

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