Aluminium Sulfate CAS#16828-11-8
Aluminium Sulfate (CAS#16828-11-8), also known as Alum, is a white crystalline inorganic compound widely used for water treatment and various industrial applications. With the chemical formula Al₂(SO₄)₃, it exhibits excellent coagulation properties and effectively removes suspended particles and impurities from water, making it an important material in purification processes.
Key Features:
Appearance: Aluminium Sulfate appears as a white, odorless, crystalline solid with stable physical properties.
Solubility: It is readily soluble in water and insoluble in ethanol, featuring fast dissolution behavior in aqueous solutions.

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:
In addition to water purification, Aluminium Sulfate is widely used as a coagulant in the paper industry, a dye-fixing agent in textile processing, and a firming agent in food applications. It is also applied in the production of fire-resistant materials and construction-related fields, including cement manufacturing.
Usage:
Aluminium Sulfate is mainly used in water treatment plants for coagulation and flocculation processes, helping to improve water clarity by removing suspended particles. It is also an important raw material in the manufacture of industrial products, including paper and textiles.
Storage and Handling:
Aluminium Sulfate should be stored in a cool, dry environment and kept away from incompatible substances. Appropriate personal protective equipment, such as gloves and safety goggles, is recommended during handling to avoid direct contact with skin and eyes.
Aluminium Sulfate is a dependable and efficient material widely applied in water treatment and various industrial fields, contributing to improved quality and performance in different processes and products.
Aluminum sulfate (Al₂(SO₄)₃) is a colorless aluminum salt composed of monoclinic crystals with a specific gravity of 2.71. It is soluble in water and decomposes upon heating. It is commonly used in the production of dyes, paint products, and varnish removers.
As a widely used aluminum compound, aluminum sulfate is also applied as an astringent ingredient and shares similar characteristics with other aluminum-based materials.


