Hexanatriumtetraphosphat

SODIUM TETRAPHOSPHATE Chemische Eigenschaften,Einsatz,Produktion Methoden

• Chemische Eigenschaften

  Na6P4O13 ? H2O . Formula weight of the anhydrous salt is 469.85. The crystalline salt cannot be obtained. On standing for four weeks, the dried oil is partially transformed to Na3HP2O7 . H2O. Heating of this mixture to 200°C for two hours produces a quantitative yield of Na3HP2O7.

• Synthese

  Hexasodium tetraphosphate is formed by careful hydrolysis of sodium tetrametaphosphate(method of Thilo and Ratz):
  
  A solution of 4.8 g. of Na 4 P4 O 12 ? 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, placed in an oven at 40°C. The rat e 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 colorless oil formed is dissolved in some water and reprecipitated with acetone.
  

Hexanatriumtetraphosphat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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