Irritant
⚠️ For information only; not a substitute for the official Safety Data Sheet (SDS).
Aluminum hydroxide is an inorganic salt used as an antacid. It is a basic compound that acts by neutralizing hydrochloric acid in gastric secretions. Subsequent increases in pH may inhibit the action of pepsin. An increase in bicarbonate ions and prostaglandins may also confer cytoprotective effects.
| Physical Description | White solid in various forms; [ICSC] White odorless granules; Slightly soluble in water; [MSDSonline] |
| Color/Form | White, amorphous powder |
| Melting Point | 300 °C |
| Density | 2.42 g/cu cm |
| Solubility | Insoluble in water; soluble in alkaline solutions, acid solutions |
| Vapor Pressure | Vapor pressure, Pa at 20 °C: |
| Refractive Index | Monoclinic crystal system; Mohs hardness: 3; Index of refraction: 1.57 (least index); 1.57 (intermediate index); 1.59 (greatest index) /Gibbsite/ |
| Stability/Shelf Life | Forms gels on prolonged contact with water; absorbs acids, carbon dioxide. |
| IUPAC Name | aluminum trihydroxide |
| Molecular Formula | AlH3O3 |
| Molecular Weight | 78.004 g/mol |
| CAS | 21645-51-2 |
| SMILES | [OH-].[OH-].[OH-].[Al+3] |
| InChIKey | WNROFYMDJYEPJX-UHFFFAOYSA-K |
| Catalog No | KC.110135 |
| Pack sizes | 250GM · 500GM |
⚠️ For information only; not a substitute for the official SDS.
