Water → Orthosilicic acid

HRID 839493Notes

Reaction equation

HRID 839493 reaction equation
[O-:1][Si:2]([O-:4])=[O:3].[K+:5].[K+].O.[S:8]([O-:12])([OH:11])(=[O:10])=[O:9].[K+].O=O>>[Si:2]([OH:9])([OH:4])([OH:1])[OH:3].[S:8]([O-:12])([O-:11])(=[O:10])=[O:9].[K+:5].[K+:5]

Participants

6

Reactant 4

HCID 962WaterHCID 977OxygenHCID 66200Silicic acid (H2SiO3), potassium salt (1:2)2×HCID 516920Potassium bisulfate

Product 2

HCID 14942Orthosilicic acidHCID 24507Potassium Sulfate

Procedure

About 1 part by weight of dry granular potassium metasilicate, containing less than 6 mols of water per mol of potassium metasilicate, and 12 mols of potassium hydrogen sulfate are mixed. The mixture is agitated at ambient pressure and chemical reaction causes oxygen to evolve in 1 to 3 minutes; considerable heat is produced, the chemical reaction is complete in 1 to 2 hours, thereby producing white granules of a silicic acid compound and potassium sulfate. The mixture is washed with water and filtered to remove the salt. The silicic acid compound is air dired at 25° to 75° C.

Workup

  1. additionare mixed
  2. temperatureconsiderable heat
  3. customis produced
  4. customthe chemical reaction
  5. waitis complete in 1 to 2 hours

Sources & evidence

ORD record
ord-33b1932fde5f4061a5cb5226635f3494
Source dataset
uspto-grants-1978_06
Patent number
US04096121

Reaction notes

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