Orthosilicic acid → Tetrakis(N,N,N-trimethylmethanaminium) orthosilicate

Participants

Reaction Conditions

Reaction Steps

About 1250 ml of 10 percent aqueous tetramethylammonium hydroxide solution were added to 82.2 g of precipitated silicic acid. After the mixture had been stirred at 25° C. for 16 hours and at 50° C. for 8 hours, a clear solution was obtained. The solution was concentrated to two-thirds of its original volume and the tetramethylammonium silicate contained therein was crystallized at 4° C. About 359.5 g of tetramethylammonium silicate which still contained water were obtained.

Provenance & Evidence