Holmium sulfate octahydrate CAS 13473-57-9
| CAS No. | 13473-57-9 |
| Molecular Formula | Ho |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Holmium sulfate octahydrate.
Holmium sulfate octahydrate (CAS 13473-57-9) is a high-purity analytical reference standard with the molecular formula HoH2O4SH2O and a molecular weight of 281.02 g/mol.
Owing to a sulfone group, Holmium sulfate octahydrate is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 281.02 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.
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 Formula | Ho H2O4S H2O |
| Molecular Weight | 281.02 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.) | 1960 |
| Sulfur Atoms | 1 |
Related Holmium Standards
- Holmium(III) chloride (CAS 10138-62-2)
- Holmium(III) oxide (CAS 12055-62-8)
- Holmium, [10-[2-[[2-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)ethyl]amino]-2-(oxo-κO)ethyl]-1,4,7,10-tetraazacyclododecane-1,4,7-triacetato(3-)-κN1,κN4,κN7,κN10]- (CAS 1349103-97-4)
- Holmium(III) fluoride,99.99% (CAS 13760-78-6)
- Holmium(III) iodide (CAS 13813-41-7)
- Holmium(III) bromide (CAS 13825-76-8)
- Holmium trifluoromethanesulfonate (CAS 139177-63-2)
- Holmium(III) perchlorate solution (CAS 14017-54-0)
Recommended Standards
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- Methane-d4 (gas) (CAS 558-20-3)
- (3-Methylthiophen-2-yl)methanol (CAS 63826-56-2)
- (Perfluorooctyl)(phenyl)iodonium trifluoromethanesulfonate (CAS 77758-89-5)
- n1-(4-Methoxyphenyl)benzene-1,3-diamine (CAS 76754-71-7)
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- Chondroitin disaccharide δdi-0S sodium salt (CAS 136132-69-9)
- 5-Hydroxy-4-(4-methoxyphenyl)isoquinolin-1(2H)-one (CAS 656234-25-2)
- Xenopsin-Related Peptide 2 (XP-2) (H-9340.0005) (CAS 117442-29-2)
Why CATO?
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