Silico-dihydrogen sulfate is produced by reacting and slowly adding a dry alkali metal silicate or an alkaline earth metal silicate to concentrated sulfuric acid in the ratio of 1:4 mols, and then subsequently adding 2 mols of concentrated sulfuric acid to complete the reaction.
A dry alkaline earth metal metasilicate or an alkali metal metasilicate is chemically reacted with a concentrated mineral acid in the ratio of 1:3 mols to produce silicoformic hydrogen salts and an alkali hydrogen salt. The silicoformic hydrogen salt is washed with water then filtered to remove the salt and mineral acid, thereby producing silicoformic acid.
