Marek, what Dan can do to convert K2PtCl6 into K2PtCl4? Regards, Loris. 2010/1/9 Marek Matusz <marekmatusz at hotmail.com>: ... >From the chemistry standpoint it is a starting material in the preparation of proper platinum printing salt, K2PtCl4. As Loris noted all this because of different oxidation states of platinum.