| 摘要 |
The use, in conjunction with a devaluing agent for valuable objects, of a solvent composition comprising at least one organic acid having a total number of carbon atoms less than or equal to five and having one carboxylic group, at least one organic salt having a total number of carbon atoms less than or equal to five, a surfactant and a solvent, devaluing composition thus obtained and method of devaluing valuable objects, making use of said devaluing composition. |
