Al₂(SO₄)₃ (aq) + 3 Ca(OH)₂ (s) → 3 CaSO₄ (s) + 2 Al(OH)₃ (s)

Reactants:

• Al₂(SO₄)₃ – Aluminium sulfate
  • Other names: Aluminum sulfate , Aluminium sulphate , Cake alum ... show moreFilter alum , Papermaker's alum , Alunogenite , Aluminum salt (3:2) , Al2(SO4)3 , Alum , Aluminium sulfate (2:3) , Aluminium(III) sulfate , Aluminum(III) sulfate , Sulfuric acid, aluminium salt (3:2) , Aluminum sulfate (2:3) , Sulfatodialuminium disulfate , Sulfatodialuminum disulfate , Aluminium sulfate (anhydrous) , Dialuminium trisulfate , Aluminium sesquisulfate , Aluminium sulfate anhydrous , Dialuminum trisulfate , Aluminium sulfate (anh.) , Sulfuric acid, aluminum salt (3:2) , Aluminum sulfate anhydrous , Aluminum sulphate anhydrous , Dialuminum sulfate , Aluminium trisulfate show less
  • Appearance: White crystalline solid | hygroscopic ; Odourless white hygroscopic lustrous crystals or powder
• Ca(OH)₂ – Calcium hydroxide
  • Other names: {{ubl , Slaked lime , Calcium hydrate ... show moreCaustic lime , Hydrated lime , Ca(OH)2 , Hydralime , Calcium dihydroxide show less
  • Appearance: White powder ; Colourless crystals or white powder ; White, odorless powder. [Note: Readily absorbs CO2 from the air to form calcium carbonate.]

Products:

• CaSO₄
  • Names: Calcium sulfate , Plaster of Paris , Drierite ... show moreGypsum , Calcium sulfate (anhydrous) , Anhydrous calcium sulfate , Anhydrous gypsum , Anhydrous sulfate of lime , Calcium salt of sulfuric acid , CaSO4 , Calcium sulphate , Calcium sulfate anhydrous , Sulfuric acid, calcium salt (1:1) , [Note: Gypsum is the dihydrate form and Plaster of Paris is the hemihydrate form.] show less
  • Appearance: White solid ; White hygroscopic powder or crystalline powder ; Odorless, white powder or colorless, crystalline solid. [Note: May have blue, gray, or reddish tinge.]
• Al(OH)₃ – Aluminium hydroxide , Aluminium(3+) trioxidanide
  • Other names: Aluminic acid , Aluminum hydroxide , Al(OH)3 ... show moreAmphojel , Dialume , Aluminium hydroxide gel, dried , Aluminium hydroxide, dried , Aluminum hydroxide gel, dried , Aluminum hydroxide, dried , Dried aluminium hydroxide , Dried aluminum hydroxide gel , Alumina hydrate , Aluminum oxide trihydrate , Trihydroxyaluminum show less
  • Appearance: White amorphous powder ; Odourless white solid in various forms