Beryllium Chromate, BeCrO₄.H₂O

Beryllium Chromate, BeCrO₄.H₂O, and the basic compound, BeCrO₄.6Be(OH)₂, have been described by Glassmann, whose results, however, have not been confirmed by subsequent workers. It appears to be established that a solution of chromic acid absorbs beryllium hydroxide in the exact ratio of 1Be(OH)₂:1CrO₃, which points to the formation of the neutral chromate. When solutions of beryllium salts are treated with equivalent quantities of chromates, the precipitates at first formed redissolve; but if the chromate is added in excess, yellow precipitates of strongly basic beryllium chromates of uncertain composition are obtained.