Structure

Diammonium hydrogenphosphate

CAS
7783-28-0
Catalog Number
ACM7783280
Category
Metal & Ceramic Materials
Molecular Weight
132.06g/mol
Molecular Formula
(NH4)2HPO4;(NH4)3PO4;(NH4)2HPO4;H9N2O4P

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Specification

Description
DryPowder; Liquid; OtherSolid; PelletsLargeCrystals; PelletsLargeCrystals, OtherSolid;ODOURLESS WHITE CRYSTALS OR POWDER.
Synonyms
SEC-AMMONIUM HYDROGEN PHOSPHATE;SEC AMMONIUM PHOSPHATE;PHOSPHORUS ICP STANDARD;ammoniummonohydrogenorthophosphate;diammonium;diammoniumacidphosphate;diammoniummonohydrogenphosphate;diammoniumorthophosphate
IUPAC Name
diazanium;hydrogen phosphate
Canonical SMILES
[NH4+].[NH4+].OP(=O)([O-])[O-]
InChI
InChI=1S/2H3N.H3O4P/c;;1-5(2,3)4/h2*1H3;(H3,1,2,3,4)
InChI Key
MNNHAPBLZZVQHP-UHFFFAOYSA-N
Melting Point
155 °C with decomposition
Density
1.619 g/cu cm;Relative density (water = 1): 1.6
Solubility
Insoluble in ethanol, acetone;69.5 g/100 g water at 25 °C;1 g dissolves in 1.7 mL water, 0.5 mL boiling water;Solubility in water, g/100ml at 10 °C: 57.5
Application
Diammonium hydrogenphosphate, a white crystalline or powdery inorganic phosphate, serves as a versatile compound with multiple applications. It exhibits high water solubility, with around 57 grams dissolving in 100 grams of water at 0°C, and a 1% solution displays a pH of 7.6-8.2. Primarily used in the food industry, it functions as a dough strengthener, firming agent, leavening, and pH control agent, finding applications in baked goods, alcoholic beverages, condiments, and puddings. In the context of bakery products, up to 0.25 part per 100 parts by weight of flour is typically used. Diammonium hydrogenphosphate is also significant in agriculture as a fertilizer, with technical grades typically containing 16 to 18% nitrogen and 20 to 21% phosphorus. It plays a crucial role as both a fertilizer in its own right and as an intermediate in producing complex fertilizers and bulk blends.
Color/Form
White crystals;Crystals or crystalline powder
Complexity
46.5
Covalently-Bonded Unit Count
3
Decomposition
When heated to decomposition emits very toxic fumes ... of /phosphorus oxides, nitrgen oxides, and ammonia/.;100 °C
EC Number
231-987-8
Exact Mass
132.029994g/mol
Formal Charge
0
H-Bond Acceptor
4
H-Bond Donor
3
Heavy Atom Count
7
ICSC Number
0217
Monoisotopic Mass
132.029994g/mol
Odor
Odorless;Weak ammonia odor
Other Experimental
Heat of solution: 42 Btu/lb = 23 cal/g;Decomposes into ammonia and monoammonium phosphate at about 70 °C. Unstable at room temperature and exhibits an ammonium vapor pressure in the solid form and in solution.;Gradually loses about 8% ammonia on exposure to air.
Rotatable Bond Count
0
Stability
Gradually loses about 8% ammonium on exposure to air
UNII
10LGE70FSU
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