| abstract |
An aqueous composition having a viscosity of 1 to 100 cP (0.001-0.1 Pa · s) at 20 ° C is described, said composition comprising: (i) an oligodynamic metal or its ions; (ii) a chelating agent; and (iii) free alkali in an amount of less than 1 wt.%, with the specified composition containing from 0.01 to 2 wt.% salt of an organic acid; The pH of the composition is from 9 to 12, and the molar ratio of said oligodynamic metal to said chelating agent is from 1: 0.25 to 1:10. The composition provides a reliable solution to the technical problems of discoloration and instability. |