| abstract |
A solid composition comprising: a) from 15 to 90 wt. %, based on the total weight of the solid composition, free acid equivalent of aminopolycarboxylate; and b) from 1 to 25 wt. %, based on the total weight of the solid composition, free acid equivalent of inorganic acid; and c) from 2 to 30 wt. %, based on the total weight of the solid composition, of water; and wherein the pH of a solution made by dissolving the solid in water at 1 wt. % is at least 5.0 as measured at 25 degrees Celsius; and wherein the pH of a solution made by dissolving the solid in water in a 1:1: weight ratio is at most 10 as measured at 25 degrees Celsius, wherein at least 10 wt. % of the ingredient a), based on the total weight of the ingredient a) is non-crystalline; and wherein at least 10 wt. % of ingredient b), based on the total weight of the ingredient b) is non-crystalline. |