| 释义 |
sodium phosphate
noun
1. : an orthophosphate of sodium known in both anyhydrous and hydrated crystalline forms:
a. : the primary phosphate NaH2PO4 that with the secondary phosphate constitutes the principal buffer system of the urine and that is used chiefly in buffer compositions (as in acid cleaning compositions) — called also monobasic sodium phosphate, monosodium phosphate, sodium acid phosphate, sodium dihydrogen phosphate
b. : the secondary phosphate Na2HPO4 that is used chiefly in water treatment for precipitating polyvalent metals, in cleaning compositions, in process cheeses, in ceramic glazes and enamels, in the textile industry, and in medicine as a laxative and antacid — called also dibasic sodium phosphate, disodium hydrogen phosphate, disodium phosphate
c. : the tertiary phosphate Na3PO4 that is used chiefly in cleaning compositions and in water treatment — called also tribasic sodium phosphate, trisodium phosphate
2. : a phosphate of sodium that is not an orthophosphate — compare sodium metaphosphate, sodium pyrophosphate, sodium tripolyphosphate |