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P9791

Sigma-Aldrich

Potassium phosphate monobasic

for molecular biology, ≥98.0%

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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:

grade

for molecular biology

Quality Level

Assay

≥98.0%

form

powder

pKa (25 °C)

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

mp

252.6 °C (lit.)

solubility

H2O: 100 mg/mL

density

2.338 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤10 ppm

cation traces

Fe: ≤20 ppm
heavy metals (as Pb): ≤10 ppm

application(s)

diagnostic assay manufacturing

foreign activity

DNase, Exonuclease; NICKase, Endonuclease; RNase and protease, none detected

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
60218P5379P0662
vibrant-m

P9791

Potassium phosphate monobasic

-
vibrant-m

60218

Potassium phosphate monobasic

Premium Grade
vibrant-m

P5379

Potassium phosphate monobasic

-
vibrant-m

P0662

Potassium phosphate monobasic

-
assay

≥98.0%

assay

≥99.5% (T)

assay

≥99.0%

assay

≥99.0%

grade

for molecular biology

grade

for molecular biology

grade

-

grade

ACS reagent

foreign activity

DNase, Exonuclease; NICKase, Endonuclease; RNase and protease, none detected

foreign activity

-

foreign activity

-

foreign activity

-

application(s)

diagnostic assay manufacturing

application(s)

-

application(s)

-

application(s)

-

cation traces

Fe: ≤20 ppm, heavy metals (as Pb): ≤10 ppm

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, 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

cation traces

-

cation traces

Fe: ≤0.002%, Na: ≤0.005%, heavy metals: ≤0.001% (by ICP)

Application

Potassium phosphate monobasic has been used:
  • in high-throughput fluorescence assay of cytochrome P450 3A4
  • in morphological analysis of neuromuscular junction development and degeneration in rodent lumbrical muscles
  • in the measurement of net high-affinity urea uptake in maize plants

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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Customers Also Viewed

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High-throughput fluorescence assay of cytochrome P450 3A4
Cheng Q, et al.
Nature Protocols, 4(9), 1258-1258 (2009)
Morphological analysis of neuromuscular junction development and degeneration in rodent lumbrical muscles
Sleigh J N, et al.
Journal of Neuroscience Methods, 227, 159-165 (2014)
Measurement of net high-affinity urea uptake in maize plants
Zanin L, et al.
BMC plant biology (2014)
Przemyslaw Nogly et al.
IUCrJ, 2(Pt 2), 168-176 (2015-04-14)
Lipidic cubic phases (LCPs) have emerged as successful matrixes for the crystallization of membrane proteins. Moreover, the viscous LCP also provides a highly effective delivery medium for serial femtosecond crystallography (SFX) at X-ray free-electron lasers (XFELs). Here, the adaptation of
Leo Syrjänen et al.
Frontiers in zoology, 12, 19-19 (2015-08-25)
Carbonic anhydrases (CAs, EC 4.2.1.1) are ubiquitous enzymes that catalyze the reversible hydration reaction of carbon dioxide. CAs are present as six structurally divergent enzyme families: α, β, γ, δ, ζ and η. β-CAs have a wide distribution across different

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