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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.

Price and Availability

Suggested Laboratory Gloves


Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.



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
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