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60218 Sigma-Aldrich

Potassium phosphate monobasic

BioUltra, for molecular biology, anhydrous, ≥99.5% (T)

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

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Properties

Related Categories Alphabetical, BioUltra, BioUltra Buffers, Biochemicals and Reagents, Biological Buffers,
Quality Level   200
grade   for molecular biology
product line   BioUltra
assay   ≥99.5% (T)
form   powder or crystals
impurities   DNases, none detected
  RNases, none detected
  insoluble matter, passes filter test
  phosphatases, none detected
  proteases, none detected
  ≤0.001% total nitrogen (N)
pH   4.0-4.5 (25 °C, 1 M in H2O)
pKa (25 °C)   (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
mp   252.6 °C (lit.)
solubility   H2O: 1 M at 20 °C, clear, colorless
density   2.338 g/mL at 25 °C (lit.)
anion traces   chloride (Cl-): ≤5 mg/kg
  sulfate (SO42-): ≤30 mg/kg
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
λ   1 M in H2O
UV absorption   λ: 260 nm Amax: 0.050
  λ: 280 nm Amax: 0.045
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

Description

Application

Potassium phosphate monobasic and dibasic, are used to create phosphate buffered solutions such as potassium phosphate buffered water and saline solutions used in biological applications.

Other Notes

Component of PBS - in the isolation and analysis of nuclear RNA

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 1
RTECS 
TC6615500
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Protocols & Articles

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Peer-Reviewed Papers
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References

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