Hafnium(IV) sulfate,99.90% CAS 15823-43-5
| CAS No. | 15823-43-5 |
| Molecular Formula | Hf |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Hafnium(IV) sulfate,99.90% (CAS 15823-43-5), molecular formula HfH2O4S and molecular weight 276.56 g/mol, is a CATO reference standard with documented purity and traceability.
Hafnium(IV) sulfate,99.90% (HfH2O4S) contains a sulfone group. It is notably hygroscopic; these physicochemical properties determine the optimal preparation and storage of its standard solutions.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Hafnium(IV) sulfate,99.90% 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 Formula | Hf H2O4S |
| Molecular Weight | 276.56 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Freely soluble in water |
| Stability | Hygroscopic; reseal immediately after opening |
| CAS Registry Year (est.) | 1961 |
| Sulfur Atoms | 1 |
Related Hafnium Standards
- Hafnium boride (CAS 12007-23-7)
- Hafnium(IV) oxide (CAS 12055-23-1)
- Hafnium(IV) carbide (CAS 12069-85-1)
- Hafnium silicide (HfSi2) (CAS 12401-56-8)
- Hafnium tetrachloride (CAS 13499-05-3)
- Hafnium fluoride (CAS 13709-52-9)
- Hafnium(IV) bromide, anhydrous, 98% (99.7%-Hf) (CAS 13777-22-5)
- Hafnium(IV) iodide,99.00% (CAS 13777-23-6)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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