60359

Potassium phthalate monobasic

BioUltra, ≥99.5% (T)

• Synonym(s): KHP, Phthalic acid monopotassium salt, Potassium biphthalate, Potassium hydrogen phthalate
• Linear Formula: HOOCC₆H₄COOK
• CAS Number: 877-24-7
• Molecular Weight: 204.22
• Beilstein: 3637128
• EC Number: 212-889-4
• MDL number: MFCD00013070
• UNSPSC Code: 12161700
• PubChem Substance ID: 57651755
• NACRES: NA.21

Properties

• product line: BioUltra
• Assay: ≥99.5% (T)
• form: powder or crystals
• 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: 0.1 M at 20 °C, clear, colorless
• anion traces: chloride (Cl^-): ≤20 mg/kg; sulfate (SO₄^2-): ≤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: cut-off at 309 nm in H₂O at 0.1 M
• SMILES string: [K+].OC(=O)c1ccccc1C([O-])=O
• InChI: 1S/C8H6O4.K/c9-7(10)5-3-1-2-4-6(5)8(11)12;/h1-4H,(H,9,10)(H,11,12);/q;+1/p-1
• InChI key: IWZKICVEHNUQTL-UHFFFAOYSA-M

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.

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 3
• Flash Point(F): 387.1 °F - Pensky-Martens closed cup
• Flash Point(C): 197.3 °C - Pensky-Martens closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves