60357

Potassium phthalate monobasic

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

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

Properties

• grade: reference material
• 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
• 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

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.

Safety Information

• 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