Sodium Thiosulfate CAS 7772-98-7

Purity N/AIn StockPharmaceutical Standards
CAS No.7772-98-7
Molecular FormulaO3S2
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Sodium Thiosulfate CAS 7772-98-7 chemical structure

Description

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.

Sodium Thiosulfate (CAS 7772-98-7) is a high-purity analytical reference standard with the molecular formula O3S2Na and a molecular weight of 135.11 g/mol.

Based on its molecular formula O3S2Na, Sodium Thiosulfate contains a sulfone group; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 135.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.

As a certified reference material (CRM), Sodium Thiosulfate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaO3S2 2*Na
Molecular Weight135.11 g/mol
PurityN/A
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Freely soluble in water
StabilityHygroscopic; reseal immediately after opening
CAS Registry Year (est.)1959
Sulfur Atoms2

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