Sodium tetrathionate dihydrate CAS 13721-29-4

Purity 97%+In StockPharmaceutical Standards
CAS No.13721-29-4
Molecular FormulaO6S4
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Sodium tetrathionate dihydrate CAS 13721-29-4 chemical structure

Description

Sodium tetrathionate dihydrate (CAS 13721-29-4) is a high-purity analytical reference standard with the molecular formula O6S4NaH2O and a molecular weight of 265.24 g/mol.

Sodium tetrathionate dihydrate (O6S4NaH2O) contains a sulfone group. It is notably hygroscopic; these physicochemical properties determine the optimal preparation and storage of its standard solutions.

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 FormulaO6S4 2*Na 2*H2O
Molecular Weight265.24 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Freely soluble in water
StabilityHygroscopic; reseal immediately after opening
CAS Registry Year (est.)1960
Sulfur Atoms4

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