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Merck
CN

216003

Ammonium phosphate monobasic

ACS reagent, ≥98%

Synonym(s):

APM, mono-Ammonium phosphate, prim-Ammonium phosphate, Ammonium dihydrogenphosphate

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About This Item

Linear Formula:
NH4H2PO4
CAS Number:
7722-76-1
Molecular Weight:
115.03
NACRES:
NA.21
PubChem Substance ID:
329752181
UNSPSC Code:
12352300
EC Number:
231-764-5
MDL number:
MFCD00003396
Assay:
≥98%
Grade:
ACS reagent
Form:
crystals or chunks

Key Documents

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Product Name

Ammonium phosphate monobasic, ACS reagent, ≥98%

InChI key

LFVGISIMTYGQHF-UHFFFAOYSA-N

InChI

1S/H3N.H3O4P/c;1-5(2,3)4/h1H3;(H3,1,2,3,4)

SMILES string

N.OP(O)(O)=O

grade

ACS reagent

vapor pressure

<0.001 hPa ( 20 °C)

assay

≥98%

form

crystals or chunks

impurities

≤0.005% NH4OH pptd.
≤0.005% insolubles

pH

3.8-4.4 (25 °C, 5%)

mp

190 °C (dec.) (lit.)

anion traces

chloride (Cl-): ≤5 ppm
nitrate (NO3-): ≤0.001%
sulfate (SO42-): ≤0.01%

cation traces

Ca: 0.001%
Fe: ≤0.001%
K: ≤0.005%
Mg: 0.005%
Na: ≤0.005%
heavy metals (as Pb): ≤5 ppm

Quality Level

200

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Application

Employed in the synthesis of the first example of a mixed-valence ammonium iron phosphate, NH4Fe2(PO4)2.

Other Notes

Go to Redi-Dri™ Product Listing 795461

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCZ7476
0000499857
0000499857
0000478483
0000478466

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Milne GWA.
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