Rubidium perchlorate, RbClO4, is the perchlorate of rubidium. It is an oxidizing agent, as are all perchlorates.
Preparation and properties Rubidium perchlorate can be obtained through the careful heating of a rubidium chlorate solution, leading to a disproportionation reaction with the release of oxygen gas:
2 RbClO3 → RbClO4 + RbCl + O2
When heated, it decomposes into the chloride and oxygen:
RbClO4 → RbCl + 2 O2
It has two polymorphs. Below 279 °C, it crystallizes in orthorhombic crystal system with lattice constants a = 0.927 nm, b = 0.581 nm, c = 0.753 nm. Over 279 °C, it has a cubic structure with lattice constant a = 0.770 nm.
Table of solubility in water: Temperature (°C) 0 8.5 14 20 25 50 70 99 Solubility (g / 100 ml) 1.09 0.59 0.767 0.999 1.30 3.442 6.72 17.39
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