P1088

Potassium hydrogen phthalate

BioXtra, ≥99.95%

• Synonym(s): Potassium phthalate monobasic, KHP, Phthalic acid monopotassium salt, Potassium biphthalate, Potassium hydrogen phthalate
• Linear Formula: HOOCC₆H₄COOK
• CAS Number: 877-24-7
• Molecular Weight: 204.22
• Beilstein/REAXYS Number: 3637128
• EC Number: 212-889-4
• MDL number: MFCD00013070
• UNSPSC Code: 12161700
• PubChem Substance ID: 24898152
• NACRES: NA.25

Properties

• product line: BioXtra
• Quality Level: 200
• assay: ≥99.95%
• form: powder or crystals
• impurities: <0.005% Insoluble matter; <0.005% Phosphorus (P)
• pH: 4
• mp: 295-300 °C (dec.) (lit.)
• anion traces: chloride (Cl^-): <0.003%; sulfur compounds (as SO₄^2-): ≤0.002%
• cation traces: Al: <0.0005%; Ca: <0.005%; Cu: <0.0005%; Fe: <0.0005%; Mg: <0.0005%; NH₄⁺: <0.05%; Na: <0.005%; Pb: <0.001%; Zn: <0.0005%
• 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 (KHP) is a semi-organic salt that is a member of the alkali acid phthalate series. KHP crystals are useful in devices because of their electro-optical properties. It usually acts as a model compound due to its well-developed surface pattern on the (010) face that can be easily observed by optical microscopy.

Application

Potassium hydrogen phthalate has been used as a substrate to assess the permeation from the extracellular (EC) to the periplasmic (PP) side through DcaP. It has also been used as one of the polyurethane materials for the characterization of polyester triol (OH).

Features and Benefits

• Long-term stability
• Exhibits dielectric properties

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: 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)