Potassium phthalate monobasic

Name: Potassium phthalate monobasic
Brand: SIAL

reference material for titrimetry, certified by BAM, >99.5%

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

UNSPSC Code:

41116107

NACRES:

NA.24

PubChem Substance ID:

329758900

EC Number:

212-889-4

Beilstein/REAXYS Number:

3637128

MDL number:

MFCD00013070

Product Name

Potassium phthalate monobasic, reference material for titrimetry, certified by BAM, >99.5%

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

grade

reference material

assay

>99.5%

quality

certified by BAM

technique(s)

titration: suitable

pH

mp

295-300 °C (dec.) (lit.)

application(s)

environmental

format

neat

Quality Level

100

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Certified Reference Materials

Physical & Chemical Property Standards

Analysis Note

Exact concentration, expiry date and detailed information on certification can be found on the certificate and certification report, included in each package. Content and expiry date on label.

Application

It finds its use as a reference material for the standardization of volumetric solutions in alkalimetric titrations.

Features and Benefits

Available as a solid in a secure glass bottle to ensure its stability for the entire shelf life until opened.
High-purity material traceable to NIST SRM
High-quality offering accurate titer determinations
Accompanied by a certificate of analysis (CoA)

General description

Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Potassium hydrogen phthalate, also known as KHP, is a volumetric standard produced under stringent conditions and measured with the highest possible precision. The content of the standard is measured using volumetric acid-base titrations. Its certified value and uncertainty measurement are in accordance with ISO Guide 35.

Storage Class

11 - Combustible Solids

wgk

WGK 1

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)

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Certificates of Analysis (COA)

Lot/Batch Number

BCCJ8134

BCCC4843

BCBT3524

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If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

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Purity of potassium hydrogen phthalate, determination with precision coulometric and volumetric titration--A comparison

Recknagel S, et al.

Analytica Chimica Acta, 599(2), 256-263 (2007)

Purity of potassium hydrogen phthalate, determination with precision coulometric and volumetric titration?A comparison

Recknagel S, et al.

Analytica Chimica Acta, 599, 256-263 (2007)

Acid- Base Dissociation Constants of o-Phthalic Acid in Acetonitrile/Water Mixtures over the (15 to 50)? C Temperature Range and Related Thermodynamic Quantities

Gagliardi GL, et al.

Journal of Chemical and Engineering Data, 55(1), 85-91 (2010)

Are baleen whales exposed to the threat of microplastics? A case study of the Mediterranean fin whale (Balaenoptera physalus).

Maria Cristina Fossi et al.

Marine pollution bulletin, 64(11), 2374-2379 (2012-09-12)

Baleen whales are potentially exposed to micro-litter ingestion as a result of their filter-feeding activity. However, the impacts of microplastics on baleen whales are largely unknown. In this case study of the Mediterranean fin whale (Balaenoptera physalus), we explore the

Novel double-confined polymeric ionic liquids as sorbents for solid-phase microextraction with enhanced stability and durability in high-ionic-strength solution.

Juanjuan Feng et al.

Journal of chromatography. A, 1268, 16-21 (2012-11-07)

Because of the occurrence of ion exchange between high-ionic-strength solution and anions of polymeric ionic liquids (PILs), PILs based solid-phase microextraction (SPME) fibers were rarely used in direct immersion mode to high-salt-added samples. In this work, a novel double-confined PIL

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