Przemysl Chemiczny, Vol.95, No.10, 1866-1871, 2016
The concept of production of sodium tripolyphosphate with high bulk density as an example of cleaner production
Na5P3O10 was sepd. from com. solns. of NaH2PO4 and Na2HPO4 by calcination at 350-550 degrees C and subsequent crystn. at 400-450 degrees C. The product showed d. 0.90-0.95 kg/L and met the std. requirements. A process flow-sheet was proposed. Neither by-products nor wastes were formed in the process.