Water → Orthosilicic acid

HRID 1703746

Reaction equation

HRID 1703746 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+]>>[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

5

Reactant 3

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

Product 2

HCID 14942Orthosilicic acidHCID 24507Potassium Sulfate

Procedure

About equal parts by weight of a dry potassium metasilicate, containing less than 6 mols of water per mol of potassium metasilicate and potassium hydrogen sulfate, are mixed. The mixture is agitated at ambient pressure, the chemical reaction starts in 2 to 5 minutes and 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 dried at 25° to 75° C.

Workup

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

Sources & evidence

ORD record
ord-ffeb9f2c675d43ed90af564b3e07fbf1
Source dataset
uspto-grants-1978_11
Patent number
US04125498

Linked notes

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