Acid water and process for its preparation
AssigneeOxy Japan Corporation
InventorsYoshifumi Torimoto, Nobuharu Kotani
Life of this patent
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Abstract
Acid water containing negative charge oxygen atoms and showing an acidity level higher than pH 5 is provided. Acid water of a pH level not lower than pH 5 is prepared by conveying negative charge oxygen atoms produced by heating a composite oxide enclosing active oxygen by themselves or by means of gas not reacting with water and contacting them with water.
Claims5
Acid water containing negative charge oxygen atoms and showing an acidity level higher than pH 5.
Sterilizing water containing negative charge oxygen atoms and showing an acidity level higher than pH 5.
An aqueous solution containing negative charge oxygen atoms and dissolving silicon nitride film to show an acidity level higher than pH 5.
A process for the preparation of acid water of a pH level not lower than pH 5 by conveying negative charge oxygen atoms produced by heating a composite oxide enclosing active oxygen by themselves or by means of gas not reacting with water and contacting them with water.
Dependencies are inferred from the claim text.