Main Component: Aluminum sulfate (Al(SO))
Purity: Typically, the alum powder should contain at least 99% pure aluminum sulfate.
Appearance: White crystalline powder
Odor: Odorless
Solubility: Soluble in water; insoluble in organic solvents
pH (1% Solution): Approximately 3.0 to 4.0
Aluminum Content: Typically, around 17-18% by weight of aluminum oxide (AlO) in the compound
Sulfur Dioxide Content: Usually present as a sulfate (SO²») in the compound
Mesh Size: Typically passes through a 100-mesh sieve (fine powder), but granulation can vary depending on the intended use.
Moisture: Should be less than 2% to ensure stability and effectiveness.
Lead (Pb): Typically less than 10 ppm (parts per million)
Arsenic (As): Typically less than 5 ppm
Applications: Used in water treatment, paper sizing, dyeing, and other industrial processes.