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| | Process for the separation of a strong mineral acid from an aqueous solution - Patent 4291007 (Site not responding. Last check: 2007-11-06) |
 | | mineral acids present in an aqueous solution can be separated from each other by solvent extraction, nor do they suggest a general method having a wide range of applicability. |
 | | Especially preferred are strong organic acids selected from the group consisting of aliphatic and aromatic sulfonic acids and alpha-, beta- and gamma-chloro and bromo substituted carboxylic acids, e.g., hexadecylsulfonic acid, didodecylnaphthalene sulfonic acid, dinonylnaphthalene sulfonic acid, didodecylnaphthalene disulfonic acid, alpha-bromo lauric acid, beta-, beta-dichloro decanoic acid and gamma dibromo octanoic acid, etc. |
 | | It is obvious that the change in ratio between the amine and the organic acid does not change the essential character and ability of the extractant to extract the acid reversibly, though it modulates the equilibrium. |
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