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

HRID 728092Notes

Reaction equation

HRID 728092 reaction equation
[Si:1]([OH:5])([OH:4])([OH:3])[OH:2].[OH-].[CH3:7][N+:8]([CH3:11])([CH3:10])[CH3:9]>>[Si:1]([O-:5])([O-:4])([O-:3])[O-:2].[CH3:7][N+:8]([CH3:11])([CH3:10])[CH3:9].[CH3:7][N+:8]([CH3:11])([CH3:10])[CH3:9].[CH3:7][N+:8]([CH3:11])([CH3:10])[CH3:9].[CH3:7][N+:8]([CH3:11])([CH3:10])[CH3:9]

Participants

3

Reactant 2

HCID 14942Orthosilicic acidHCID 60966Tetramethylammonium hydroxide

Product 1

HCID 71310495Tetrakis(N,N,N-trimethylmethanaminium) orthosilicate

Conditions

Temperature
50 °C

Procedure

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.

Workup

  1. customa clear solution was obtained
  2. concentrationThe solution was concentrated to two-thirds of its original volume
  3. customthe tetramethylammonium silicate contained therein was crystallized at 4° C

Sources & evidence

ORD record
ord-0305da4f66b74d538d0bcab68d2ce610
Source dataset
uspto-grants-1991_09
Patent number
US05047492

Reaction notes

Loading…