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发明公开
CN101495439A 有机酸铬（Ⅲ）水溶液及其制造方法 有权

有机酸铬（Ⅲ）水溶液及其制造方法
摘要：
本发明公开一种包含通式Crm(Ax)n所示的有机酸铬(III)的水溶液(式中，A表示从有机酸除去质子的残基，x表示A的电荷，m和n分别表示满足3m+xn＝0的整数)。水溶液中的有机酸铬(III)的浓度以Crm(Ax)n计为6重量％以上。并且，换算成以Crm(Ax)n计20重量％时，杂质离子的浓度Na≤30ppm、Fe≤20ppm、Cl≤0.001、SO4≤0.03％、NO3≤20ppm。此外，基本上不含铬(VI)。
摘要（英）：

The invention discloses an aqueous solution containing an organic acid chromium (III) salt represented by general formula: Crm(A)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 Crm(A) n , has impurity ion concentrations of Na <= 30 ppm, Fe <= 20 ppm, Cl <= 0.001%, SO4 <= 0.03%, and NO3 <= 20 ppm per 20 wt% concentration of Crm(A)n, and is substantially free from chromium (VI).

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