Sulfurous Acid CAS 7782-99-2

Purity 14.1mg/L in WaterIn StockPharmaceutical Standards
CAS No.7782-99-2
Molecular FormulaH2O3S
Molecular Weight82.08 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Sulfurous Acid CAS 7782-99-2 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 82.08 g/mol gives Sulfurous Acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Sulfurous Acid (CAS 7782-99-2) is a high-purity analytical reference standard with the molecular formula H2O3S and a molecular weight of 82.08 g/mol.

Structurally, Sulfurous Acid (H2O3S) contains a sulfone group. The molecule exhibits a degree of unsaturation (DBE) of 0, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 82.08 g/mol, it falls into the low-molecular-weight range.

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.

As a certified reference material (CRM), Sulfurous Acid 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 FormulaH2O3S
Molecular Weight82.08 g/mol
Purity14.1mg/L in Water
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 Atoms1

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