Sodium aluminate. Magnesium carbonate and lime. Ferrous sulphate and lime. Sodium aluminate – sodium aluminate is alkaline in reaction and is used very much less often than alum because of its cost. It reacts with salts of calcium and magnesium. Na 2 Al 2 O 4 +CA(HCO 3) 2 – > CaAl 2 O 4 + Na 2 CO 3 + CO 2 + H 2 O. Na 2 Al 2 O 4 +CaCl 2read more
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