1,2,6,8-Tetrachlorodibenzo-p-dioxin CAS 67323-56-2

Purity 97%+In StockPharmaceutical Standards
CAS No.67323-56-2
Molecular FormulaC12H4Cl4O2
Molecular Weight321.97 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1,2,6,8-Tetrachlorodibenzo-p-dioxin CAS 67323-56-2 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1,2,6,8-Tetrachlorodibenzo-p-dioxin.

1,2,6,8-Tetrachlorodibenzo-p-dioxin (CAS 67323-56-2) is a high-purity analytical reference standard with the molecular formula C12H4Cl4O2 and a molecular weight of 321.97 g/mol.

1,2,6,8-Tetrachlorodibenzo-p-dioxin (C12H4Cl4O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC12H4Cl4O2
Molecular Weight321.97 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1976
Halogen ContentCl-containing

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