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P9791

Sigma-Aldrich

Potassium phosphate monobasic

for molecular biology, ≥98.0%

Synonym(s):

Monopotassium phosphate, Potassium dihydrogen phosphate, prim.-Potassium phosphate

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About This Item

Linear Formula:
KH2PO4
CAS Number:
7778-77-0
Molecular Weight:
136.09
EC Number:
231-913-4
MDL number:
MFCD00011401
UNSPSC Code:
12161700
PubChem Substance ID:
24898921
NACRES:
NA.21

grade

for molecular biology

Quality Level

200

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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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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Certificates of Analysis (COA)

Lot/Batch Number
SLCK2007
SLCH8630
SLCF0596
SLCB6231
SLBW7347

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High-throughput fluorescence assay of cytochrome P450 3A4
Cheng Q, et al.
Nature Protocols, 4(9), 1258-1258 (2009)
Measurement of net high-affinity urea uptake in maize plants
Zanin L, et al.
BMC plant biology (2014)
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)
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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