Diammonium phosphate

Basic Information

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CAS Number

7783-28-0

Molecular Formula

H9N2O4P

Molecular Weight

132.06 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Basic Chemical Raw Materials Organic Chemicals Amines

Agricultural Chemicals Pesticides Insecticides

Water Treatment Chemicals Coagulants and Flocculants Inorganic Coagulants

Basic Physical Properties

Melting Point

155 °C (dec.)

Boiling Point

158 °C at 760 mmHg

Density

1.619

Water Solubility

58 g/ 100mL (10 ºC)

Solubility

H2O: 1 M at 20 °C, clear, colorless

Refractive Index

1.53

SMILES

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[O-]P(=O)(O)[O-].[NH4+].[NH4+]

InChI

1S/2H3N.H3O4P/c;;1-5(2,3)4/h2*1H3;(H3,1,2,3,4)

InChIKey

MNNHAPBLZZVQHP-UHFFFAOYSA-N

LogP

-0.28080

Complexity

46.5

Safety Information

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GHS Hazard Pictograms

H315

H319

H335

Hazard Statement

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Stability

Stable. Incompatible with strong acids, strong bases, strong oxidizing agents.

Synonyms & References

English

Ammonium phosphate
AMMONIUM HYDROGENPHOSPHATE
AMMONIUM HYDROGEN PHOSPHATE DIBASIC
AMMONIUM MONOHYDROGEN PHOSPHATE
AMMONIUM PHOSPHATE DIBASIC
DAP
DI-AMMONIUM HYDROGEN ORTHOPHOSPHATE
DIAMMONIUM HYDROGEN PHOSPHATE
DI-AMMONIUM HYDROGENPHOSPHATE (SEC)
DIAMMONIUM PHOSPHATE
FYREX
PHOSPHORUS ICP STANDARD
SEC-AMMONIUM HYDROGEN PHOSPHATE
SEC AMMONIUM PHOSPHATE
ammoniummonohydrogenorthophosphate
diammonium
diammoniumacidphosphate
diammoniummonohydrogenphosphate
diammoniumorthophosphate
Ammonium hydrogen orthophosphate
Ammoniumphosphate-dibasic
DIAMMONIUM PHOSPHATE (DAP)
diazanium,hydrogen phosphate
Phosphoric Acid Diam
Phosphoric Acid Diammonium Salt
ACS
AMMoniuM Phosphate Dibasic (AS)
AMMONIUM PHOSPHATE TS
Diammonium hydrogenorthophosphate
Ammonium hydrogen phosphate
Diammonium hydrogenphosphate

MDL Number

MFCD00010891

FAQ

What is Diammonium Phosphate (CAS: 7783-28-0)?

Diammonium phosphate (DAP), with CAS number 7783-28-0, is a white, crystalline inorganic compound composed of ammonium and phosphate ions. Its chemical formula is (NH4)2HPO4, making it a dual-source of nitrogen and phosphorus. DAP is highly soluble in water, stable under normal conditions, and commonly used in agriculture, food, and industry. It serves as a fertilizer, acidulant, and buffering agent, offering balanced nutrient delivery for plant growth and pH regulation in various applications.

What are the main uses of Diammonium Phosphate (CAS: 7783-28-0)?

Diammonium phosphate (CAS: 7783-28-0) is widely used as a fertilizer in agriculture to provide nitrogen and phosphorus for crops. In the food industry, it acts as a leavening agent and acidulant in processed foods. It also finds applications in pharmaceuticals for drug formulation and in research as a buffering solution. Additionally, DAP is used in fire retardants and as a stabilizer in industrial processes, highlighting its versatility across sectors.

Is Diammonium Phosphate (CAS: 7783-28-0) safe?

Diammonium phosphate (CAS: 7783-28-0) is generally safe when handled properly. It has low acute toxicity but may cause skin or eye irritation if exposed directly. Safety standards recommend avoiding inhalation of dust and using protective gloves and goggles. Proper ventilation is essential during handling. It is non-flammable and stable under normal conditions, making it a reliable chemical for industrial and agricultural use.

How should Diammonium Phosphate (CAS: 7783-28-0) be stored?

Diammonium phosphate (CAS: 7783-28-0) should be stored in a cool, dry place, away from moisture and direct light. Keep in airtight containers to prevent hygroscopic absorption. Maintain storage temperatures between 15-25°C and ensure humidity levels are low. Avoid exposure to incompatible materials like strong acids. Proper storage ensures stability and prolongs shelf life for industrial and agricultural applications.