Aminopolycarboxylic acid aqueous solution composition and stabilization method of aminopolycarboxlic acid
AssigneeNippon Shokubai Co., Ltd.
InventorsYasutaka Sumida, Mitsuhiro Kitajima
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Abstract
The present invention is to provide a stabilized aqueous aminopolycarboxylate solution composition and a method of stabilizing the aminopolycarboxylate through preventing the same from caking. An aqueous aminopolycarboxylate solution composition containing an aminopolycarboxylate represented by the following general formula (1): 1 in the formula, X may be the same or different and represents a hydrogen atom, an alkali metal atom, or an ammonium group, which has a D-form/L-form molar ratio of an aspartic acid skeleton of the aminopolycarboxylate of 1/0 to 0.7/0.3 or 0.3/0.7 to 0/1, has a solid concentration of 25 to 60 mass %, and has a pH value of not more than 11.
Claims4
An aqueous aminopolycarboxylate solution composition containing an aminopolycarboxylate represented by the following general formula (1):
- 4
- in the formula, X may be the same or different and represents a hydrogen atom, an alkali metal atom, or an ammonium group,
- which has a D-form/L-form molar ratio of an aspartic acid skeleton of the aminopolycarboxylate of 1/0 to 0.7/0.3 or 0.3/0.7 to 0/1,
- has a solid concentration of 25 to 60 mass %, and
- has a ph value of not more than 11.
Dependencies are inferred from the claim text.