Aluminium potassium sulfate

CAS: 7784-24-9
Molecular Formula: AlH24KO20S2
Molecular Weight: 474.39
Product description:Colorless cubic crystal, appearance is octahedron, or in connection with the cube, formed a dodecahedron diamond shape, sometimes with {111} surface attached to the container wall and shaped like a six-party plate, belong to the type of alpha alum class double salts, have glass luster. 1.757 g/cm3 density, melting point of 92.5 ℃. 64.5 ℃ when losing nine crystallization water molecules, 200 ℃ lost 12 molecular crystal water, soluble in water, insoluble in ethanol. Alum sexual flavour acidity, cold, poison. Reason has antibacterial function, convergence effect, etc., can be used as traditional Chinese medicine. Alum can also be used for the preparation of aluminum salt, baking powder, paint, tanning, clarifying agent, mordant, papermaking, waterproofing agent, etc., can also be used for food additives.