Calcium sulfite hemihydrate CAS 29501-28-8

Purity 97%+In StockPharmaceutical Standards
CAS No.29501-28-8
Molecular Formula2*H2O3S
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Calcium sulfite hemihydrate CAS 29501-28-8 chemical structure

Description

Based on its molecular formula H2O3SCaH2O, Calcium sulfite hemihydrate contains a sulfone group; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 140.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.

Calcium sulfite hemihydrate (CAS 29501-28-8) is a high-purity analytical reference standard with the molecular formula H2O3SCaH2O and a molecular weight of 140.17 g/mol.

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

As a certified reference material (CRM), Calcium sulfite hemihydrate 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 Formula2*H2O3S 2*Ca H2O
Molecular Weight140.17 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Freely soluble in water
StabilityHygroscopic; reseal immediately after opening
CAS Registry Year (est.)1965
Sulfur Atoms1

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