Aqua regia, nitric acid: hydrochloric acid 1:3 ratio. But it only dissolves some of the plastic. High corrosion resistant plastics require special solvents.
Because the card material is made of PVC, it is a flame retardant material, there is another way, you can bake the card for a long time, the card is multi-layer pvc integrated together, after baking there will be cracks between each layer, you can slowly uncover, but be sure to note that the IC card coil is very thin, if not careful, it will break. There are coils and chips where the use of fine copper wire connection, that place is the most easy to break, the success rate is not large, but also careful operation!
Good afternoon, the specific depends on the IC card chip on the outer layer of the card is what kind of polymer and not all can be dissolved in organic solvents.
If it is PS (polystyrene), PMMA (acrylic) or PVC, they can be dissolved in toluene, methylene chloride, THF and cyclohexanone, which are good solvents.
However, if PA-6 (nylon), PET, PE, PP and PC are insoluble because there is no good solvent at room temperature, please refer to it as appropriate. It is recommended to use xylene sold in chemical reagent stores to soak IC cards, and the aromatic hydrocarbon compounds do not corrode metal circuits and silicon chips.
Aqua regia, nitric acid: hydrochloric acid in a ratio of 1:3.