Chromium(III) oxide CAS 1308-38-9

Purity 97%+In StockPharmaceutical Standards
CAS No.1308-38-9
Molecular FormulaCr2O3
Molecular Weight151.99 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Chromium(III) oxide CAS 1308-38-9 chemical structure

Description

Owing to an inorganic composition, Chromium(III) oxide is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 151.99 g/mol — guide the selection of appropriate sample preparation and analytical techniques.

Chromium(III) oxide (CAS 1308-38-9), molecular formula Cr2O3 and molecular weight 151.99 g/mol, is a CATO reference standard with documented purity and traceability.

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.

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.

Physical & Chemical Properties

Molecular FormulaCr2O3
Molecular Weight151.99 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.)1957

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Why CATO?