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09839

Sigma-Aldrich

Ammonium phosphate dibasic

BioUltra, ≥99.0% (T)

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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
PubChem Substance ID:
329748847
NACRES:
NA.25

product line

BioUltra

Quality Level

200

Assay

≥99.0% (T)

impurities

insoluble matter, passes filter test

pH

7.5-9.0 (25 °C, 1 M in H2O)

mp

155 °C (dec.) (lit.)

solubility

H2O: 1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤5 mg/kg
nitrate (NO3-): ≤10 mg/kg
sulfate (SO42-): ≤20 mg/kg

cation traces

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

1 M in H2O

UV absorption

λ: 260 nm Amax: 0.065
λ: 280 nm Amax: 0.065

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

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A576479762215996
Ammonium phosphate dibasic BioUltra, ≥99.0% (T)

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Ammonium phosphate dibasic

Ammonium phosphate dibasic reagent grade, ≥98.0%

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Ammonium phosphate dibasic ACS reagent, ≥98%

Sigma-Aldrich

215996

Ammonium phosphate dibasic

impurities

insoluble matter, passes filter test

impurities

-

impurities

-

impurities

≤0.005% NH4OH pptd., ≤0.005% insolubles

pH

7.5-9.0 (25 °C, 1 M in H2O)

pH

7.5-9.0 (25 °C, 132.1 g/L)

pH

-

pH

7.7-8.1 (25 °C, 5%)

mp

155 °C (dec.) (lit.)

mp

155 °C (dec.) (lit.)

mp

155 °C (dec.) (lit.)

mp

155 °C (dec.) (lit.)

solubility

H2O: 1 M at 20 °C, clear, colorless

solubility

water: soluble 132 g/L at 20 °C

solubility

H2O: 50 mg/mL, clear, colorless

solubility

-

anion traces

chloride (Cl-): ≤5 mg/kg, nitrate (NO3-): ≤10 mg/kg, sulfate (SO42-): ≤20 mg/kg

anion traces

-

anion traces

-

anion traces

chloride (Cl-): ≤0.001%, nitrate (NO3-): ≤0.003%, sulfate (SO42-): ≤0.01%

Application

Ammonium phosphate dibasic can be used to study x-ray crystallography, biological buffers, optimization reagents, proteomics and protein structural analysis. Ammonium phosphate dibasic has been used in a study for the development and validation of a stability-indicating HPLC method for determination of voriconazole and its related substances. Ammonium phosphate dibasic has also been used to crystallize the native enzyme cellobiohydrolase IB using the hanging-drop vapour-diffusion method.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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