Arsenic(III) sulfide (99.9%-As) CAS 1303-33-9

Purity 97%+In StockPharmaceutical Standards
CAS No.1303-33-9
Molecular FormulaAs2S3
Molecular Weight246.04 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Arsenic(III) sulfide (99.9%-As) CAS 1303-33-9 chemical structure

Description

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.

Arsenic(III) sulfide (99.9%-As) (CAS 1303-33-9), molecular formula As2S3 and molecular weight 246.04 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to sulfur-containing functionality, Arsenic(III) sulfide (99.9%-As) is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 246.04 g/mol — guide the selection of appropriate sample preparation and analytical techniques.

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

Physical & Chemical Properties

Molecular FormulaAs2S3
Molecular Weight246.04 g/mol
Purity97%+
StorageStore at room temperature
Solubility (reference)Freely soluble in water
StabilityStable under recommended storage conditions
CAS Registry Year (est.)1957
Sulfur Atoms3

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Why CATO?