Potassium hydrogen phthalate ≥99.5%, BiotechGrade

Supplier: SPECTRUM CHEMICAL MFG CORP

Synonyms: KHPPotassium phthalate monobasicPotassium Acid PhthalatePotassium biphthalatePhthalic Acid Monopotassium SaltPhthalic acid potassium salt

P1192-500GM P1192-500GM-CS
75811-822EA 582.64 CAD
75811-822 75811-824
Potassium hydrogen phthalate ≥99.5%, BiotechGrade
Potassium hydrogen phthalate

Potassium Biphthalate, BiotechGrade, also known as potassium hydrogen phthalate or KHP, is an acidic salt compound used as a primary standard for acid-base titrations and as a buffering agent. The critical parameters involved are absence of inhibitors such as traces of heavy metals as well as biochemical function tests for enzymes, coenzymes and enzyme substrates.


Spectrum offers highly pure reagents suitable for biochemical research and analysis.

Formula: HOOCC₆H₄COOK
MW: 204.22 g/mol
Storage Temperature: Ambient
MDL Number: MFCD00013070
CAS Number: 877-24-7
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Specification Test Results

Assay (C₈H₅O₄K; Dried Basis) 99.5 % min.
pH of a 0.1M Solution @ 20°C 3.5 - 5.0
Insoluble Matter max. 0.01 %
Chloride max. 0.002 %
Sulfates max. 0.005 %

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