Potassium nitridotrioxoosmate(VIII)

Potassium nitridotrioxoosmate(VIII) K[OsO₃N], also known as potassium osmiate, CAS 21774-03-8

Substance identification

The systematic name for K[OsO₃N] is potassium nitridotrioxoosmate(VIII); the traditional name «potassium osmiate» is retained as a synonym. The formula, CAS 21774-03-8, and oxidation state +8 are confirmed by chemical reference works and publications.

Confirmed characteristics

• CAS: 21774-03-8
• Formula: K[OsO₃N]
• Osmium: oxidation state +8
• Main substance: not less than 90% per TU 5P-129-67
• Catalog number: 5162752

Applications and preparation

The compound is used as a specialized osmium(VIII) reagent in research inorganic and coordination chemistry. It should not be considered interchangeable with osmium tetroxide or osmates: the composition, counterion, and reactivity differ.

Stoichiometry is calculated based on K[OsO₃N] and the actual purity from the CoA. Before scaling up, check solubility, stability in the chosen medium, and possible formation of volatile osmium species. Minimize open operations. For quantitative analysis, a separate certified reference material is required; this card describes a reagent, not a standard sample.

What to confirm before ordering

Request the CoA and SDS with CAS 21774-03-8, formula K[OsO₃N], main substance, water, impurities, and appearance. Clarify the analytical method, pack size, and transport restrictions. Evaluate any color discrepancy with the literature sample based on the batch certificate and identification analysis.

Safe handling

Osmium compounds require enhanced control: avoid inhalation, contact, and conversion to volatile products. Perform all operations in a properly functioning fume hood on a small scale, using PPE per the SDS and an emergency response plan. Do not heat or mix the material without assessing compatibility. Collect waste and rinse liquids tightly sealed and separately.