Tetrachlorophthalic Anhydride CAS 117-08-8

Purity >95%In StockPharmaceutical Standards
CAS No.117-08-8
Molecular FormulaC8Cl4O3
Molecular Weight285.90 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Tetrachlorophthalic Anhydride CAS 117-08-8 chemical structure

Description

Tetrachlorophthalic Anhydride (CAS 117-08-8) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C8Cl4O3. Molecular weight: 285.90 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.

Physical & Chemical Properties

Molecular FormulaC8Cl4O3
Molecular Weight285.90 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, low volatility)
Purity>95%
StorageStore at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Halogen ContentCl-containing

Related Tetrachlorophthalic Standards

Recommended Standards

Why CATO?