Antimony trioxide CAS 1309-64-4

Purity 97%+In StockPharmaceutical Standards
CAS No.1309-64-4
Molecular FormulaO3Sb2
Molecular Weight291.52 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Antimony trioxide CAS 1309-64-4 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.

Antimony trioxide (CAS 1309-64-4) is a high-purity analytical reference standard with the molecular formula O3Sb2 and a molecular weight of 291.52 g/mol.

Owing to an inorganic composition, Antimony trioxide is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 291.52 g/mol — guide the selection of appropriate sample preparation and analytical techniques.

As a certified reference material (CRM), Antimony trioxide 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 FormulaO3Sb2
Molecular Weight291.52 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.)1957

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