Hi Jeffrey,
> If you do not find any specks in the print and the crystals are pure
> red, then you likely have made a pure K2PtCl4.
..no specks..
An important
> consideration to help prevent the formation K2PtCl6 is to keep the
> temperature below 140F (from chemist at Engelhard).
>
..through your manual I was aware of that..
> Both your guesses for the solariztion can be possible. One thing to
> remember that can cause too little metal is that the correct solution
> strength will likely require warming of the K2PtCl4 solution
> to keep it
> in solution. (I put the solution bottles in a mug with water on a
> coffee warmer.) The strengths typically used can precipitate out at
> typical room temperatures (crystals in bottom of bottle).
..that's my observation and workflow as well: warming the Pt(II) solution..(ik keep my Pt(II) solution in a clear bottle, storage in the dark though)
Best,
Cor
Received on Thu Dec 1 09:55:31 2005
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