FIELD: chemistry.
SUBSTANCE: method of obtaining anhydrous monosodium phosphate lies in neutralization of phosphoric acid with soda in two stages in presence of saturated solution of monosodium phosphate in form of mother waters, with supply at first stage of 0.45 part of phosphoric acid, with further stand during 30 minutes, and at second stage with even supply of remaining 0.55 part during 80 minutes.
EFFECT: increasing economy of process and reduction of admixture part of arsenic up to 1,6 times and heavy metals up to 1,2 times in product.
7 ex
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