Description

1,2,6,7-Tetrachlorodibenzo[1,4]Dioxin CAS NO 40581-90-6 is a specific chlorinated derivative of dibenzo-p-dioxin, a compound class of significant interest in environmental and analytical chemistry. This high-purity reference standard is critical for accurate identification, quantification, and toxicological research of dioxin-related compounds. It is primarily required by analytical laboratories, environmental testing facilities, and research institutions engaged in trace-level contaminant analysis and regulatory compliance monitoring.

Application

• Analytical Reference Standard: Primary use as a certified standard for the calibration of GC-MS and HRGC/HRMS systems in environmental analysis.
• Environmental Monitoring: Used in the quantification and confirmation of polychlorinated dibenzo-p-dioxin (PCDD) congeners in soil, water, air, and biological samples.
• Toxicological Research: Serves as a precise chemical entity for studying the structure-activity relationships, metabolism, and environmental fate of chlorinated dioxins.
• Quality Control & Method Development: Essential for developing, validating, and ensuring the accuracy of analytical methods in compliance with protocols like EPA Method 1613 and 8290.
• Regulatory Compliance Testing: Used by commercial and government labs to test industrial emissions, waste incineration outputs, and consumer products for dioxin contamination against international limits.
• Food and Feed Safety Analysis: Applied in the sensitive detection of dioxin congeners to ensure compliance with strict EU and global food safety regulations.

Basic Information

Product Name	1,2,6,7-Tetrachlorodibenzo[1,4]Dioxin
CAS No.	40581-90-6
Molecular Formula	C₁₂H₄Cl₄O₂
Molecular Weight	321.97 g/mol
Synonyms	1,2,6,7-Tetrachlorodibenzo-p-dioxin; 1,2,6,7-TeCDD; TCDD (isomer specific); NSC 406333; Tetrachlorodibenzodioxin (1,2,6,7-); Dibenzo[b,e][1,4]dioxin, 1,2,6,7-tetrachloro-
EINECS	Contact for details

Quality Control

Every batch of our 1,2,6,7-Tetrachlorodibenzo[1,4]Dioxin is manufactured and handled under strict quality protocols to ensure identity, purity, and stability. Our products undergo rigorous quality testing, including chromatographic purity verification, to ensure compliance with the stringent requirements for analytical reference materials. A comprehensive Certificate of Analysis (COA) detailing the exact congener purity, solvent content, and analytical methods (e.g., GC-MS, HPLC) is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below in a dedicated freezer. For long-term storage under an inert atmosphere, seal the original vial under nitrogen or argon. Allow the vial to equilibrate to room temperature in a desiccator before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	White to off-white solid or solution (as specified)
Identification (IR / NMR)	Conforms to structure
Purity (GC-MS / HPLC)	≥ 98.0% (congener-specific)
Solvent (for solutions)	Nonane, Toluene, or DMSO (as specified)
Concentration (for solutions)	10 µg/mL, 50 µg/mL, or custom (as specified)
Water Content (KF)	≤ 0.5%

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