Diammonium phosphate

  • Ammonium hydrogen phosphate
  • Di - ammonium phosphate
  • Ammonium phosphate dibasic
  • Fermentation Salt

White solid with a pungent odor

Fixed

1.62 g · cm -3 ( at 20 ° C)

155 ° C ( decomposition)

Well in water ( 690 g · l-1 at 20 ° C)

6500 mg · kg -1 ( LD50, rat, oral)

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Diammonium hydrogen phosphate is an ammonium salt of phosphoric acid. In agriculture, (0 % K2O 18% N, 46% P2O5 ) are the names of diammonium phosphate, diammonium phosphate, DAP 18-46-0 and consistently. It has the formula ( NH4) 2HPO4 and belongs to the class of hydrogen phosphates.

Properties

Diammonium hydrogen phosphate is readily soluble in water. Its aqueous solutions are slightly basic with a pH of: 7.6 to 8.2 (100 g / l H2O).

Representation

Can be produced diammonium hydrogen phosphate of ammonia and phosphoric acid:

Use

It is mainly used as a fertilizer, in addition to the impregnation of matches and as a flame retardant for wood (eg for forest fire fighting ), as nitrogen and phosphorus source in the yeast breeding ( commercially available as Hefenährsalz available ), as a flux in soldering, as a catalyst in the production of aminoplasts, for dyeing wool and chromium is a component of special glasses and enamel locations. In the analysis, it applies separation process for the detection of magnesium ions using.

CAS registry number PubChem Base (chemistry)
11113
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