Barium Tetracyanoplatinate II Tetrahydrate

The Ba(CN)2 used contains metal cation impurities limited to sodium, aluminum, strontium, and 0.05% potassium, plus traces of iron, magnesium and lithium. Each platinum electrode is a 90-100 cm2 heavy sheet with purity 99%. During the electrolysis, half of each electrode is submerged in the solution. All water used is distilled, and all filters are medium-pore fritted-glass filters. The electrolysis apparatus consists of a variable ac voltage supply with an ac ammeter included in the circuit. 

TResearch participant sponsored by the Argonne Center for Educational Affairs from Whitman College, Walla Walla, WA. 

The electrolysis is discontinued when the mixture visibly begins to change to a grayish color as a result of the formation of platinum black. After the platinum electrodes are disconnected, they are washed in concentrated HC1 until clean, and weighed (Pt loss = 30-35 g). 

The compound Ba[Pt(CN)4] -4H20 is a colorless crystalline material with a measured density of 3.09 g/mL (calculated density 3.13 g/mL). The first 12 

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AIH28NO20S2 aluminum ammonium sulfate dodecahydrate 7784-26-1 25.00 1.6500 1 439 BaC4H8N404Pt barium tetracyanoplatinate (ii) tetrahydrate 13755-32-3 25.00 2.0760 1... 

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