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60359 Sigma

Potassium phthalate monobasic

BioUltra, ≥99.5% (T)

Synonym: KHP, Phthalic acid monopotassium salt, Potassium biphthalate, Potassium hydrogen phthalate

  • CAS Number 877-24-7

  • Linear Formula HOOCC6H4COOK

  • Molecular Weight 204.22

  •  Beilstein Registry Number 3637128

  •  EC Number 212-889-4

  •  MDL number MFCD00013070

  •  PubChem Substance ID 57651755

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Properties

Related Categories Alphabetical, BioUltra Buffers, Biochemicals and Reagents, Biological Buffers
InChI Key   IWZKICVEHNUQTL-UHFFFAOYSA-M
product line   BioUltra
assay   ≥99.5% (T)
impurities   insoluble matter, passes filter test
loss   ≤0.05% loss on drying, 110 °C
pH   3.5-5.0 (25 °C, 0.1 M in H2O)
mp   295-300 °C (dec.)(lit.)
solubility   H2O: soluble0.1 M at 20 °C, clear, colorless
anion traces   chloride (Cl-): ≤20 mg/kg
  sulfate (SO42-): ≤50 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: ≤100 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Sr: ≤5 mg/kg
  Zn: ≤5 mg/kg
absorption   absorption0.1M/309 nm, H2O cut-off

Description

Application

Potassium hydrogen phthalate may be used as a buffering agent or as a standard for total organic carbon (TOC) calibration and may be used to asses the oxidating activity of CNTs/TiO(2) photoanodes. Potassium hydrogen phthalate solution may be used as a liquid filter to reduce the effects of Rayleigh scattering on collected Raman spectra.

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Laboratory Gloves

Interactive Buffer Table
Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
2
RTECS 
CZ4326000
Protocols & Articles

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Peer-Reviewed Papers
15

References

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