7784-31-8 Al2(SO4)3.18H2O CHEBI:74779 aluminium sulfate octadecahydrate aluminium sulfate--water (1/18) aluminium sulfate.18H2O aluminium(III) sulfate octadecahydrate aluminum sulfate.18H2O aluminum(III) sulfate octadecahydrate cake alum cake alum octadecahydrate dialuminium sulfate octadecahydrate dialuminum sulfate octadecahydrate patent alum CAS 7784-31-8
| CAS No. | 7784-31-8 |
| Molecular Formula | H2O4S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 7784-31-8 Al2(SO4)3.18H2O CHEBI:74779 aluminium sulfate octadecahydrate aluminium sulfate--water (1/18) aluminium sulfate.18H2O aluminium(III) sulfate octadecahydrate aluminum sulfate.18H2O aluminum(III) sulfate octadecahydrate cake alum cake alum octadecahydrate dialuminium sulfate octadecahydrate dialuminum sulfate octadecahydrate patent alum (CAS 7784-31-8), a certified reference material (molecular formula H2O4SH4Al2H2O, MW 174.08 g/mol) for analytical method development and quality control.
7784-31-8 Al2(SO4)3.18H2O CHEBI:74779 aluminium sulfate octadecahydrate aluminium sulfate--water (1/18) aluminium sulfate.18H2O aluminium(III) sulfate octadecahydrate aluminum sulfate.18H2O aluminum(III) sulfate octadecahydrate cake alum cake alum octadecahydrate dialuminium sulfate octadecahydrate dialuminum sulfate octadecahydrate patent alum (H2O4SH4Al2H2O) 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.
CATO manufactures 7784-31-8 Al2(SO4)3.18H2O CHEBI:74779 aluminium sulfate octadecahydrate aluminium sulfate--water (1/18) aluminium sulfate.18H2O aluminium(III) sulfate octadecahydrate aluminum sulfate.18H2O aluminum(III) sulfate octadecahydrate cake alum cake alum octadecahydrate dialuminium sulfate octadecahydrate dialuminum sulfate octadecahydrate patent alum under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | H2O4S H4Al2 H2O |
| Molecular Weight | 174.08 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Freely soluble in water |
| Stability | Hygroscopic; reseal immediately after opening |
| CAS Registry Year (est.) | 1959 |
| Sulfur Atoms | 1 |
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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
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com