Aluminium Sulfate CAS#16828‑11‑8
Also referred to as Alum, Aluminium Sulfate (CAS#16828‑11‑8, chemical formula: Al₂(SO₄)₃) is a white crystalline inorganic compound. It is a premium raw material extensively applied in water treatment and multiple industrial sectors.
Thanks to its outstanding coagulation performance, it can efficiently separate suspended particles and impurities from water, playing a critical role in water purification operations.
Key Product Features
Appearance: White, odourless crystalline solid with stable physical properties.
Solubility: Highly soluble in water yet insoluble in ethanol. It dissolves rapidly in aqueous solutions for convenient on‑site operation.
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 |
Applications
Beyond water purification, Aluminium Sulfate serves multiple industrial sectors. It acts as an effective coagulant for papermaking, dye‑fixing agent for textile processing, and firming agent for food‑grade scenarios. It also participates in manufacturing fire‑resistant materials and construction products such as cement.
Usage
Commonly dosed in water treatment facilities for coagulation and flocculation, it eliminates suspended solids to enhance water clarity. Meanwhile, it functions as a key raw material for downstream production of paper, textiles and other industrial goods.
Storage & Handling
Store in cool and dry conditions, isolated from incompatible chemicals. Wear proper PPE including protective gloves and safety goggles during operation to prevent direct skin and eye contact.
Aluminium Sulfate (Al₂(SO₄)₃) is a monoclinic crystalline aluminium salt with specific gravity of 2.71. Soluble in water, it will decompose under high temperature. This versatile aluminium‑based compound is also utilised for dyes, paints, varnish removers, and as an astringent component.
It is a reliable, high‑efficiency material covering water treatment and diversified industrial segments, optimizing product quality and processing performance across numerous applications.
