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A1645

Sigma-Aldrich

Ammonium phosphate monobasic

ReagentPlus®, ≥98.5%

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Synonym(s):
mono-Ammonium phosphate, prim-Ammonium phosphate, Ammonium dihydrogenphosphate
Linear Formula:
NH4H2PO4
CAS Number:
Molecular Weight:
115.03
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

vapor pressure

<0.001 hPa ( 20 °C)

Quality Level

product line

ReagentPlus®

assay

≥98.5%

form

powder

pH

3.8-4.4 (25 °C, 50 g/L)

mp

190 °C (dec.) (lit.)

solubility

water: soluble(lit.)

SMILES string

N.OP(O)(O)=O

InChI

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

InChI key

LFVGISIMTYGQHF-UHFFFAOYSA-N

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1 of 4

This Item
2160030970988431
Ammonium phosphate monobasic ReagentPlus&#174;, &#8805;98.5%

A1645

Ammonium phosphate monobasic

-
Ammonium phosphate monobasic ACS reagent, &#8805;98%

216003

Ammonium phosphate monobasic

Essential Grade
Ammonium phosphate monobasic BioUltra, &#8805;99.5% (T)

09709

Ammonium phosphate monobasic

Premium Grade
Ammonium phosphate monobasic analytical standard, for nitrogen determination according to Kjeldahl method, &#8805;99.5%

88431

Ammonium phosphate monobasic

-
solubility

water: soluble(lit.)

solubility

-

solubility

H2O: 0.1 M at 20 °C, clear, colorless

solubility

H2O: soluble, clear, colorless

assay

≥98.5%

assay

≥98%

assay

≥99.5% (T)

assay

≥99.5% (T)

Quality Level

200

Quality Level

-

Quality Level

200

Quality Level

100

pH

3.8-4.4 (25 °C, 50 g/L)

pH

3.8-4.4 (25 °C, 5%)

pH

4.0-5.0 (25 °C, 0.1 M in H2O)

pH

3.8-4.4 (25 °C, 50 mg/mL in H2O)

mp

190 °C (dec.) (lit.)

mp

190 °C (dec.) (lit.)

mp

190 °C (dec.) (lit.)

mp

190 °C (dec.) (lit.)

General description

Ammonium phosphate monobasic (APM) is an inorganic salt widely used in fertilizer, baking powder and yeast production. It is also employed as an agent to control pH of a solution and in corrosion inhibition. APM can be prepared by reacting phosphoric acid with anhydrous ammonia maintaining the pH below 5.8. The change in some of the physical characteristics on its addition to a high carbonate containing unfired and fired illitic shale has been studied.

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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