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60357

Supelco

Potassium phthalate monobasic

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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S59049-5MG
CN¥2,187.47

CN¥2,187.47

Estimated to ship onMay 27, 2025Details

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S59049-5MG
CN¥2,187.47

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:
41116107
PubChem Substance ID:
329758900
NACRES:
NA.24

CN¥2,187.47

Estimated to ship onMay 27, 2025Details

Request a Bulk Order

grade

reference material

Quality Level

100

Assay

>99.5%

quality

certified by BAM

technique(s)

titration: suitable

pH

4

mp

295-300 °C (dec.) (lit.)

application(s)

environmental

format

neat

SMILES string

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

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Adenosine 3′,5′-cyclic monophosphate sodium salt monohydrate

β,γ-Methyleneadenosine 5′-triphosphate disodium salt ≥95%, solid

M7510

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assay

≥97% (HPLC)

assay

≥96% (HPLC)

assay

≥98.0% (HPLC)

assay

≥95%

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

solubility

H2O: 100 mg/mL

solubility

H2O: 100 mg/mL

solubility

H2O: 10 mg/mL

solubility

H2O: 10 mg/mL

color

white

color

off-white

color

white

color

white

General description

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.

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)

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.

Storage Class Code

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves
  • Specification Sheet

    • Choose from one of the most recent versions:

    Certificates of Analysis (COA)

    Lot/Batch Number
    BCCJ8134
    BCCC4843
    BCBT3524

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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)
    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
    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
    View All Related Papers

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