METHOD OF PREPARING SODIUM PYROPHOSPHATE

摘要

FIELD: chemical industry. SUBSTANCE: disodium phosphate is thermally decomposed at 330-470 C in the presence of catalytic nitroammophos additive in amount of 0.3-3.0 wt % calculated for anhydrous disodium phosphate. Method makes it possible to increase yield of the desired product by about 2-4%, power consumption remaining unchanged. EFFECT: more efficient preparation method. 3 cl, 1 tbl