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Merck

60359

Potassium phthalate monobasic

BioUltra, ≥99.5% (T)

Synonym(s):

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

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About This Item

Linear Formula:
HOOCC6H4COOK
CAS Number:
Molecular Weight:
204.22
UNSPSC Code:
12161700
NACRES:
NA.21
PubChem Substance ID:
EC Number:
212-889-4
Beilstein/REAXYS Number:
3637128
MDL number:
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InChI key

IWZKICVEHNUQTL-UHFFFAOYSA-M

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

SMILES string

[K+].OC(=O)c1ccccc1C([O-])=O

product line

BioUltra

assay

≥99.5% (T)

form

powder or crystals

Quality Level

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 (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

cut-off at 309 nm in H2O at 0.1 M

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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.

flash_point_f

387.1 °F - Pensky-Martens closed cup

flash_point_c

197.3 °C - Pensky-Martens closed cup

ppe

Eyeshields, Gloves, type N95 (US)

Storage Class

11 - Combustible Solids

wgk

WGK 1


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J E A Saunders et al.
The Review of scientific instruments, 81(1), 013108-013108 (2010-02-02)
Broadband XeCl excimer lasers operating at 308 nm are not currently used in the field of gas phase vibrational Raman spectroscopy (VRS). An explanation as to why alternative wavelengths, and in particular tuneable, narrowband lasers are currently preferred for gas
H Fromme et al.
Environment international, 61, 64-72 (2013-10-10)
Phthalates have been used for decades in large quantities, leading to the ubiquitous exposure of the population. In an investigation of 63 German daycare centers, indoor air and dust samples were analyzed for the presence of 10 phthalate diesters. Moreover
Francesca Maradonna et al.
Toxicology in vitro : an international journal published in association with BIBRA, 27(1), 84-91 (2012-10-16)
In the last years the concern about the negative effects of phthalates on reproduction significantly increased. Considering that, at date data available dealing with the adverse outcome of Di-(2-ethylhexyl)-phthalate (DEHP) on the reproduction of several species are still contrasting, in
Tye E Arbuckle et al.
Environment international, 68, 55-65 (2014-04-09)
Bisphenol A (BPA) and phthalates are endocrine disruptors possibly linked to adverse reproductive and neurodevelopmental outcomes. These chemicals have commonly been measured in urine in population surveys; however, such data are limited for large populations of pregnant women, especially for
Cheng Fang et al.
Biosensors & bioelectronics, 42, 632-639 (2012-12-25)
We demonstrate the selective detection of endocrine disruptor chemicals (EDCs) from river water using surface enhanced Raman scattering (SERS). By means of nanosphere lithography, the SERS substrate was prepared via the initial deposition of a monolayer of silica nanospheres (with

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