Potassium phthalate monobasic

Name: Potassium phthalate monobasic
Brand: SIGMA

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:

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

Key Documents

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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

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Biochemicals

Biological Buffers

High-Purity Biochemicals and Reagents

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Show Differences

1 of 4

This Item	P1088	14659	179922
Sigma-Aldrich 60359 Potassium phthalate monobasic	Sigma-Aldrich P1088 Potassium hydrogen phthalate	Supelco 14659 Potassium phthalate monobasic	Sigma-Aldrich 179922 Potassium phthalate monobasic
assay ≥99.5% (T)	assay ≥99.95%	assay -	assay 99.95-100.05% dry basis
Quality Level 200	Quality Level 200	Quality Level 300	Quality Level 200
product line BioUltra	product line BioXtra	product line TraceCERT^®	product line -
form powder or crystals	form powder or crystals	form -	form crystals
solubility H₂O: 0.1 M at 20 °C, clear, colorless	solubility -	solubility -	solubility -
pH 3.5-5.0 (25 °C, 0.1 M in H₂O)	pH 4	pH 4	pH 4.00-4.02 (25.0 °C±0.2 °C, 0.05 M)

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.

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

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Broadband 308 nm vibrational Raman spectroscopy of gaseous species using a potassium hydrogen phthalate liquid filter and polarization fluorescence suppression.

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

Phthalates in German daycare centers: occurrence in air and dust and the excretion of their metabolites by children (LUPE 3).

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

Assay of vtg, ERs and PPARs as endpoint for the rapid in vitro screening of the harmful effect of Di-(2-ethylhexyl)-phthalate (DEHP) and phthalic acid (PA) in zebrafish primary hepatocyte cultures.

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

Urinary biomarkers for phthalates associated with asthma in Norwegian children.

Randi J Bertelsen et al.

Environmental health perspectives, 121(2), 251-256 (2012-11-21)

High-molecular-weight phthalates in indoor dust have been associated with asthma in children, but few studies have evaluated phthalate biomarkers in association with respiratory outcomes. We explored the association between urinary concentrations of phthalate metabolites and current asthma. In a cross-sectional

Phthalate and bisphenol A exposure among pregnant women in Canada--results from the MIREC study.

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

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