Aluminum nitrate nonahydrate

Aluminum nitrate nonahydrate (CAS 7784-27-2, EC 616-523-8) is an inorganic aluminum salt supplied as Al(NO3)3·9H2O, also referenced commercially as aluminium nitrate 9H2O or hydrous aluminum nitrate. It carries no assigned E-code and is classified under HS code 28342980 within the Salts & Minerals category.

In water treatment, it functions as a coagulant, destabilising suspended colloidal particles through charge neutralisation to enable efficient flocculation and solids removal. In textile and leather processing, it serves as a mordant and pH buffer, fixing dyes to fibres and regulating bath acidity. Personal care formulators use it as a mild astringent and corrosion inhibitor in aluminium-containing preparations.

This material is available in technical and industrial grades as a white crystalline solid. It falls under REACH registration requirements for EU supply and should be handled in accordance with applicable GHS classifications. Standard packaging includes 25 kg bags and bulk quantities; documentation including SDS and CoA is available on request.