Ammonium rhodium(III) sulfite CAS 68191-12-8
| CAS No. | 68191-12-8 |
| Molecular Formula | Rh |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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.
CATO supplies Ammonium rhodium(III) sulfite (CAS 68191-12-8), a certified reference material (molecular formula RhH2O3SH3N, MW 202.01 g/mol) for analytical method development and quality control.
Ammonium rhodium(III) sulfite (RhH2O3SH3N) contains a sulfone group. It is notably hygroscopic; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 Formula | Rh H2O3S H3N |
| Molecular Weight | 202.01 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Freely soluble in water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ammonium Standards
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- Rhodium(III) sulfate solution (CAS 10489-46-0)
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