Radium Silicate RaSiO₃

Radium salts are apparently adsorbed by gelatinous silica. It is possible that the silicate may be formed. The acidity of the solution plays an important part, since acid exerts a desorbent action, the process possibly being represented by the equation,

RaSiO₃ + 2HCl = RaCl₂ + H₂SiO₃.