Aluminum sulfate (Al2(SO4)3)-Powder introduce:
Aluminium sulfate is a chemical compound with the formula Al2(SO4)3. It is soluble in water and is mainly used as a coagulating agent (promoting particle collision by neutralizing charge) in the purification of drinking waterand waste water treatment plants, and also in paper manufacturing.
Molar mass：342.15 g/mol
Appearance：white crystalline solid; hygroscopic
Density：2.672 g/cm3 (anhydrous)
Melting point：770 °C (1,420 °F; 1,040 K)
Solubility in water：31.2 g/100 mL (0 °C);36.4 g/100 mL (20 °C);89.0 g/100 mL (100 °C)
Solubility：slightly soluble in alcohol, dilute mineral acids
Magnetic susceptibility (χ)：-93.0·10−6 cm3/mol
Refractive index (nD)：1.47
Crystal structure：monoclinic (hydrate)
Aluminum sulfate acts as a flocculating agent in the purification of drinking water, and in waste water treatment plants. It acts as a mordant in dyeing, printing, textiles and also used in paper manufacturing. It is a waterproofing agent and accelerator in concrete. Further, it is used as a foaming agent in fire fighting foam, photographic film and in photochemicals. It is also used in styptic pencils, pain relief and in dentistry for gingival retraction cords.
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