215996

Ammonium phosphate dibasic

ACS reagent, ≥98%

• Synonym(s): Ammonium hydrogenphosphate, Diammonium hydrogenphosphate, di-Ammonium hydrogenphosphate (sec)
• Linear Formula: (NH₄)₂HPO₄
• CAS Number: 7783-28-0
• Molecular Weight: 132.06
• EC Number: 231-987-8
• MDL number: MFCD00010891
• UNSPSC Code: 12352300
• PubChem Substance ID: 329752180
• NACRES: NA.21

Properties

• grade: ACS reagent
• assay: ≥98%
• form: crystals or chunks; powder
• impurities: ≤0.005% NH₄OH pptd.; ≤0.005% insolubles
• pH: 7.7-8.1 (25 °C, 5%)
• mp: 155 °C (dec.) (lit.)
• anion traces: chloride (Cl^-): ≤0.001%; nitrate (NO₃^-): ≤0.003%; sulfate (SO₄^2-): ≤0.01%
• cation traces: Ca: 0.001%; Fe: ≤0.001%; K: ≤0.005%; Mg: 0.0005%; Na: ≤0.005%; heavy metals (as Pb): ≤0.001%
• SMILES string: N.N.OP(O)(O)=O
• InChI: 1S/2H3N.H3O4P/c;;1-5(2,3)4/h2*1H3;(H3,1,2,3,4)
• InChI key: MNNHAPBLZZVQHP-UHFFFAOYSA-N

Description

General description

Ammonium phosphate dibasic is a water-soluble ammonium phosphate salt. It is a key component of phosphate fertilizers. It is commonly used as a flame retardant for plywood, paper, and fabrics, as well as a corrosion inhibitor consolidant for degraded carbonatic materials found in old buildings.

Application

Ammonium phosphate dibasic can be used as a catalyst:

• To synthesize tetrahydrobenzo[b]pyranderivatives via three‐component condensation reaction.
• In the solvent-free Biginelli reactions.
• To synthesize bis(indolyl)methanes via solvent-free reaction of indole derivatives and aromatic or aliphatic aldehydes.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable