Claims
- 1. A method for adjusting the pH of swimming pool or hot tub water comprising lowering the pH of the swimming pool or hot tub water by adding to the swimming pool or hot tub water an effective amount of a salt of urea and sulfuric acid formed in a molar ratio of urea to sulfuric acid of from 1:4 to 4:1.
- 2. The method of claim 1, wherein the ratio of acid to base is approximately 1:1.
- 3. A method for adjusting the pH of drinking water comprising lowering the pH of the drinking water by adding to the drinking water a salt urea and sulfuric acid formed in a molar ratio of urea to sulfuric acid of from 1:4 to 4:1.
- 4. The method of claim 3, wherein the ratio of acid to base is approximately 1:1.
- 5. A method for adjusting the pH of swimming pool, or hot tub water comprising lowering the pH of the swimming pool or hot tub water by adding to the swimming pool or hot tub water a salt selected from the group consisting of: salts of aryl sulfamic acids with urea, mono-, di-, or triethanolamine, or guanidine carbonate; and the salt of urea with sulfamic acid, wherein the molar ratio used to form the salt is from 1:4 to 4:1 acid:base equivalent units.
- 6. A method for adjusting the pH of drinking water comprising lowering the pH of the drinking water by adding to the drinking water a salt selected from the group consisting of: salts of aryl sulfonic acids with urea mono-, di-, or triethanolamine, or guanidine carbonate; and the salt of urea with sulfamic acid, wherein the molar ratio used to form the salt is from 1:4 to 4:1 acid:base equivalent units.
Parent Case Info
This application is (1) a divisional of U.S. Ser. No. 08/280,189, filed Jul. 25, 1994, which is a continuation-in part of U.S. Ser. No. 08/233,348, filed on Apr. 25, 1994 now U.S. Pat. No. 5,672,279, and a continuation-in-part of U.S. Ser. No. 08/090,797, filed Jul. 12, 1993, now abandoned which is a divisional of U.S. Ser. No. 07/919,523, filed Jul. 24, 1992, now U.S. Pat. No. 5,234,466.
US Referenced Citations (20)
Foreign Referenced Citations (4)
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Date |
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37811 |
Feb 1986 |
HUX |
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Jun 1989 |
HUX |
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JPX |
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Non-Patent Literature Citations (4)
Entry |
Gyori, Erzebet et al., "Household Scale Solvent," Chemical Abstracts, 105(14):117062z (1986). |
The Merck Index, 10th Edition, p. 657 (1983). |
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Divisions (2)
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Number |
Date |
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Parent |
280189 |
Jul 1994 |
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Parent |
919523 |
Jul 1992 |
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Continuation in Parts (1)
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Date |
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233348 |
Apr 1994 |
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