467782

Ammonium phosphate monobasic

≥99.99% trace metals basis

• Synonym(s): mono-Ammonium phosphate, prim-Ammonium phosphate, Ammonium dihydrogenphosphate
• Linear Formula: NH₄H₂PO₄
• CAS Number: 7722-76-1
• Molecular Weight: 115.03
• EC Number: 231-764-5
• MDL number: MFCD00003396
• UNSPSC Code: 12352300
• PubChem Substance ID: 329757242
• NACRES: NA.55

Properties

• grade: for inorganic trace analysis
• assay: ≥99.99% trace metals basis
• form: solid
• impurities: ≤0.005% insolubles; <100 ppm total metallic impurities
• pH: 3.8-4.4
• mp: 190 °C (dec.) (lit.)
• solubility: water: soluble(lit.)
• anion traces: chloride (Cl^-): ≤5 ppm; nitrate (NO₃^-): ≤0.001%; sulfate (SO₄^2-): ≤0.01%
• cation traces: Ca: 0.001%; Fe: ≤0.001%; K: ≤0.005%; Mg: 0.0005%; Na: ≤0.005%; heavy metals: ≤5 ppm
• SMILES string: N.OP(O)(O)=O
• InChI: 1S/H3N.H3O4P/c;1-5(2,3)4/h1H3;(H3,1,2,3,4)
• InChI key: LFVGISIMTYGQHF-UHFFFAOYSA-N

Description

General description

Ammonium phosphate monobasic (APM) is an inorganic salt widely used in fertilizer, baking powder and yeast production. It is also employed as an agent to control pH of a solution, in corrosion inhibition. APM can be prepared by reacting phosphoric acid with anhydrous ammonia maintaining the pH below 5.8. The change in some of the physical characteristics on its addition to a high carbonate containing unfired and fired illitic shale has been studied.

Application

Employed in the synthesis of the first example of a mixed-valence ammonium iron phosphate, NH₄Fe₂(PO₄)₂.

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable