4-Ethoxybenzenesulfonic acid CAS 46204-52-8

Purity 97%+In StockPharmaceutical Standards
CAS No.46204-52-8
Molecular FormulaC8H10O4S
Molecular Weight202.23 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Ethoxybenzenesulfonic acid CAS 46204-52-8 chemical structure

Description

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.

CATO supplies 4-Ethoxybenzenesulfonic acid (CAS 46204-52-8), a certified reference material (molecular formula C8H10O4S, MW 202.23 g/mol) for analytical method development and quality control.

4-Ethoxybenzenesulfonic acid (C8H10O4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

Physical & Chemical Properties

Molecular FormulaC8H10O4S
Molecular Weight202.23 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1970
Sulfur Atoms1

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