Aluminium Sulfate CAS#16828-11-8
Aluminium Sulfate (CAS#16828-11-8)—also known as Alum—is a white crystalline inorganic compound that's widely used in water treatment and many other industrial settings. Its chemical formula is Al₂(SO₄)₃. It works as a great coagulant, pulling suspended particles and impurities out of water, which makes it a key ingredient in purification.
Key Features、Appearance: A white, odorless crystalline solid that's physically stable.
Solubility: Dissolves easily in water (and does so quickly), but won't dissolve in ethanol.
aluminium sulfate hexadecahydrate Chemical Properties
| Melting point | 770 °C (dec.)(lit.) |
| density | 2.71 g/mL at 25 °C(lit.) |
| storage temp. | Sealed in dry,Room Temperature |
| LogP | -1.031 (est) |
| CAS DataBase Reference | 16828-11-8(CAS DataBase Reference) |
| Hazard Codes | Xi |
| Risk Statements | 37/38-41 |
| Safety Statements | 26-39 |
| RIDADR | UN3260 - class 8 - PG 3 - RQ - Corrosive solid, acidic, inorganic, n.o.s., HI: all |
| WGK Germany | 1 |
| RTECS | BD1700000 |
Product Applications
Aside from cleaning up water, Aluminium Sulfate is also used as a coagulant in papermaking, a fixing agent in textile dyeing, and a firming agent in some foods. It's also found in fire-resistant materials and construction applications like cement manufacturing.
Its main job is in water treatment plants, where it helps with coagulation and flocculation to clear up water by removing suspended particles. It's also a key ingredient in making industrial products like paper and textiles.
