Potassium Acid Phthalate ACS Grade *


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Potassium Acid Phthalate, also known as Potassium Hydrogen Phthalate, Potassium Biphthalate, Monopotassium Phthalate, and Phthalic Acid Monopotassium Salt, has the chemical formula C8H5KO4. It appears as colorless or white crystals or crystalline powder and is slightly soluble in Water at ambient conditions. When heated to decomposition, it emits oxides of carbon such as Carbon monoxide (CO), Carbon dioxide (CO2). An ACS Grade reagent is a chemical that meets the purity requirements of the American Chemical Society (ACS). It is generally equivalent to the Analytical Reagent Grade. For dependable, consistent, and repeatable findings, ACS Grade reagents can be utilized in high-quality research labs. In the United States of America (USA), Lab Alley sells its high-quality Potassium Acid Phthalate, ACS Grade or Potassium Hydrogen Phthalate, ACS Grade online at laballey.com.


Potassium Acid Phthalate, ACS Grade Features:

Assay 99.95-100.05%
pH of a 0.05 M Solution @ 25.0° 0.2°C 4.00-4.02
Insoluble Matter 0.005%
Chloride Compounds (as Cl) 0.003%
Sulfur Compounds (as S) 0.002%
Heavy Metals (as Pb) 5 ppm
Iron 5 ppm
Sodium (Na) 0.005%
Common Uses
  • Reagent
  • Volumetric alkali solutions
Commercial/Industrial Application
  • Inert ingredient in pesticides
  • Chemical precursor
Safety and Handling

Please contact us to request a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for Potassium Acid Phthalate 1 Standard ACS.

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