Aqueous solutions of organic acid chromium(III) salts and process for preparation thereof
An aqueous solution containing an organic acid chromium (III) salt represented by general formula: Cr m (A x ) n , wherein A represents a residue left after proton removal from an organic acid; x represents a charge of A; and m and n represent integers satisfying equation 3m+xn=0, is disclosed. The...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | An aqueous solution containing an organic acid chromium (III) salt represented by general formula: Cr m (A x ) n , wherein A represents a residue left after proton removal from an organic acid; x represents a charge of A; and m and n represent integers satisfying equation 3m+xn=0, is disclosed. The aqueous solution contains the organic acid chromium (III) salt in a concentration of 6% by weight or higher in terms of Cr m (A x ) n , has impurity ion concentrations of Na¤30 ppm, Fe¤20 ppm, Cl¤0.001%, SO 4 ¤0.03%, and NO 3 ¤20 ppm per 20 wt% concentration of Cr m (A x ) n , and is substantially free from chromium (VI). |
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