Ammonium NH 4

Ammonium Phosphate Dibasic ACS Crystals

Jost Code: 2025

Ammonium Phosphate can be used as a laboratory reagent or buffer. Product specifications, SDSs and certifications are available under Additional Information.

Chemical Formula
(NH4)2HPO4
CAS Number
7783-28-0
Molecular Weight
132.1
Use
Laboratory reagent or buffer
Description
White crystals
Containers
150 lb. fiber drums; 25 kilogram packs EU only
Storage
Store in a clean, dry warehouse in the original unopened containers.
Revision Date
5/19/15
Assay
98.0% minimum
pH of a 5% Solution @ 25°C
7.7-8.1
Insoluble matter
0.005% maximum
Chloride (Cl)
0.001% maximum
Nitrate (NO3)
0.003% maximum
Sulfur compounds (as SO4)
0.01% maximum
Heavy Metals (as Pb)
0.001% maximum
Iron (Fe)
0.001% maximum
Potassium (K)
0.005% maximum
Sodium (Na)
0.005% maximum
Calcium
0.001% maximum
Magnesium
5 ppm maximum
Agglomeration
Ammonium Phosphate Dibasic crystals tend to agglomerate. Agglomeration is a normal occurrence for this chemical.