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P5379

Sigma-Aldrich

Potassium phosphate monobasic

ReagentPlus®

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Synonym(s):
Monopotassium phosphate, Potassium dihydrogen phosphate, prim.-Potassium phosphate
Linear Formula:
KH2PO4
CAS Number:
Molecular Weight:
136.09
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.25

Quality Level

product line

ReagentPlus®

assay

≥99.0%

form

powder or crystals

pKa (25 °C)

(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)

mp

252.6 °C (lit.)

solubility

water: 100 mg/mL, clear, colorless

density

2.338 g/mL at 25 °C (lit.)

SMILES string

[K+].OP(O)([O-])=O

InChI

1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1

InChI key

GNSKLFRGEWLPPA-UHFFFAOYSA-M

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This Item
6021860229P9791
vibrant-m

P5379

Potassium phosphate monobasic

-
vibrant-m

60218

Potassium phosphate monobasic

Premium Grade
vibrant-m

60229

Potassium phosphate monobasic

-
vibrant-m

P9791

Potassium phosphate monobasic

-
assay

≥99.0%

assay

≥99.5% (T)

assay

98-100.5% dry basis

assay

≥98.0%

product line

ReagentPlus®

product line

BioUltra

product line

-

product line

-

solubility

water: 100 mg/mL, clear, colorless

solubility

H2O: 1 M at 20 °C, clear, colorless

solubility

water: 208 g/L at 20 °C

solubility

H2O: 100 mg/mL

mp

252.6 °C (lit.)

mp

252.6 °C (lit.)

mp

252.6 °C (lit.)

mp

252.6 °C (lit.)

density

2.338 g/mL at 25 °C (lit.)

density

2.338 g/mL at 25 °C (lit.)

density

2.338 g/mL at 25 °C (lit.)

density

2.338 g/mL at 25 °C (lit.)

Application

Potassium phosphate monobasic has been used:
  • in calibration curve generation in electrical conductivity measurement of plasma-activated tap water (PATW).
  • as a component of dissection solution.
  • as a constituent of phosphate buffered saline.

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

ppe

Eyeshields, Gloves, type N95 (US)


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