SODIUM TETRAPHOSPHATE Chemische Eigenschaften,Einsatz,Produktion Methoden
Vorbereitung Methode
Hexasodium tetraphosphate is formed by careful hydrolysis of sodium tetrametaphosphate (Thilo and Ratz method). A solution of 4.8 g of Na4P4O12 ? 4H2O in 85 ml of hot water is prepared, and after cooling, a solution of 0.8 g of NaOH in some water is added. The mixture is kept over H2SO4 in a vacuum desiccator and placed in an oven at 40°C. The rate of evaporation should be such that after about 100 hours, no less than 8 to 10 ml remains. The solution is then diluted to 30 ml, and acetone is added. The colourless oil formed is dissolved in some water and reprecipitated with acetone.
SODIUM TETRAPHOSPHATE Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
