Merck
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P5655

Sigma-Aldrich

Potassium phosphate monobasic

powder, suitable for cell culture, suitable for insect cell culture, suitable for plant cell culture, ≥99.0%

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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

Assay

≥99.0%

form

powder

technique(s)

cell culture | insect: suitable
cell culture | mammalian: suitable
cell culture | plant: suitable

pH

4.2-4.6 (20 °C, 20 g/L)

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.)

application(s)

diagnostic assay manufacturing

storage temp.

room temp

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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1 of 4

This Item
P979157618RDD020
form

powder

form

powder

form

solid

form

crystalline

technique(s)

cell culture | insect: suitable, cell culture | mammalian: suitable, cell culture | plant: suitable

technique(s)

-

technique(s)

HPLC: suitable

technique(s)

-

pH

4.2-4.6 (20 °C, 20 g/L)

pH

-

pH

4.1-4.5

pH

-

mp

252.6 °C (lit.)

mp

252.6 °C (lit.)

mp

252.6 °C (lit.)

mp

252.6 °C (lit.)

solubility

water: 100 mg/mL, clear, colorless

solubility

H2O: 100 mg/mL

solubility

H2O: 10%, clear, colorless

solubility

water: 100 mg/mL, clear, colorless

Application

  • Potassium phosphate monobasic has been used during isolation of protein from bacterial cells.
  • It has been used in the preparation of PZM-3 (defined medium for porcine embryos) medium.
  • It has been used in the preparation of phosphate buffer saline.

related product

Product No.
Description
Pricing

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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