Hazard and Precautionary Statements (GHS)

Radium Phosphide Chemical Properties,Usage,Production

Description

Radium phosphide would have the molecular formula of Ra3P2 and the molecular weight of 740.0237 g/mol. It has no CAS number. It has never been prepared but could be formed by reacting the metal with red phosphorus at high temperature. The best way is to sublime the P4 at 450°C in an inert gas stream and react it with Ra metal at 600°C:
6Ra + 2P4 ? 2Ra3P4
It is expected to be a red–brown crystalline material with a high melting point and to readily react with water to form phosphine, PH3. There is absolutely no demand for such a compound and it is likely that it will never be prepared and its physical properties measured.