Sulfuric Acid → Sulfuric Acid

HRID 1578579Notes

Reaction equation

HRID 1578579 reaction equation
[O-][Si]([O-])=O.[Na+:5].[Na+].[S:7](=[O:11])(=[O:10])([OH:9])[OH:8]>O>[S:7]([OH:11])([OH:10])(=[O:9])=[O:8].[S:7]([O-:11])([OH:10])(=[O:9])=[O:8].[Na+:5]

Participants

5

Reactant 2

HCID 1118Sulfuric AcidHCID 23266Sodium Silicate

Product 2

HCID 1118Sulfuric AcidHCID 516919Sodium Bisulfate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

The chemical reaction involved in the above steps to produce monosilanal is complicated. When the first half of the sodium metasilicate is added to the concentrated sulfuric acid, it reacts with the acid to form silico-dihydrogen sulfate [SiO.(HSO4)2 ], sodium hydrogen sulfate and water. With the addition of the remaining sodium metasilicate it reacts with the silico-dihydrogen sulfate and sulfuric acid to form silico-formic acid and sodium hydrogen sulfate. Oxygen is evolved from the mixture in the later stage of the reaction. The sodium carbonate is then gradually mixed with the silico-formic acid and sodium hydrogen sulfate. Carbon dioxide and oxygen evolves from the semi-dry mixture and the hydrogen from the sodium hydrogen sulfate reacts with silico-formic acid to form monosilanal, sodium sulfate and water. It forms a solid mass in 1 to 2 hours. The solid mass is washed with water to remove the sodium sulfate, and the water reacts with monosilanal to form monosilandiol. Chemical reactions to form monosilanic acid (H.SiO.OH), monosilanal (H2SiO), and monosilandiol (H2Si(OH)2

Workup

  1. customreacts with the acid

Sources & evidence

ORD record
ord-fb6a8ba5145f49e19e46d33826e258a3
Source dataset
uspto-grants-1976_02
Patent number
US03937782

Reaction notes

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