Assertion: wet process phosphoric acid | /r/HasProperty | ammoniated to a ph of 1.5-2.5
Facets:
value: in the first stage
type: TEMPORAL
Source sentences:
text: In the first stage, wet process phosphoric acid which has been obtained by diluting concentrated phosphoric acid is ammoniated to a pH of 1.5-2.5 and the reaction mass is aged for about 30 minutes.