Acids & Salts Available to Source

Diammonium Phosphate

CAS 7783-28-0 · MF H9N2O4P · MW 132.06 g/mol

Diammonium Phosphate (DAP) is a widely used nitrogen-phosphorus fertilizer that provides both essential plant nutrients. It is the world's most widely used

SDS / TDS Download
CAS Number
7783-28-0
Molecular Formula
H9N2O4P
Molecular Weight
132.06 g/mol
Material Family
Acids & Salts
Functional Roles
Physical Properties
melting_point
155 u00b0C with decomposition
density
Diammonium: 1.8 at 68.0 u00b0F Monoammonium: 1.6 at 20 u00b0C (USCG, 1999)
solubility
Insoluble in ethanol, acetone
ph
pH about 8
GHS / SDS Safety Warning
Irritant
  • H315 (18.5%): Causes skin irritation [Warning Skin corrosion/irritation]
  • H335 (15.6%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
  • H319 (18.7%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
Chemical Identity
CAS Number7783-28-0
IUPAC Namediazanium;hydrogen phosphate
InChI KeyMNNHAPBLZZVQHP-UHFFFAOYSA-N
PubChem CID 24540
INCI NameDIAMMONIUM PHOSPHATE
Synonyms & Trade Names
Diammonium hydrogen phosphate DIAMMONIUM PHOSPHATE Ammonium phosphate dibasic Phosphoric acid, diammonium salt Akoustan A Fyrex Pelor Dibasic ammonium phosphate Ammonium phosphate, dibasic Coaltrol LPA 445 Diammonium orthophosphate Diammonium acid phosphate K2 (phosphate) Diammonium hydrogen orthophosphate Secondary ammonium phosphate
Full Description

Diammonium Phosphate (DAP) is a widely used nitrogen-phosphorus fertilizer that provides both essential plant nutrients. It is the world’s most widely used