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Potassium Iodide 99% USP

High-purity potassium iodide for laboratory, industrial, and research uses.
SKU: PI1239
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Potassium Iodide 99% USP


Potassium Iodide 99% USP is a granular, high-purity compound suitable for laboratory, industrial, research, and educational purposes. It is USP-grade, ensuring compliance with stringent quality standards. Commonly used in the production of potassium iodide tablets, each pound of this compound can yield over 3,000 daily adult doses of 135 mg. With a purity of 99.0–101.5% on a dried basis, Potassium Iodide exhibits excellent stability and meets or exceeds all assay requirements. It has a pH of 6.4 in a 5% solution and minimal impurities, including iodates (<0.0004%) and heavy metals (<4 mg/kg). This versatile compound is repacked from larger containers to meet customer needs and is available with a Certificate of Analysis upon request for orders of 55-lb bags or more.


Key Features

  • 99.0–101.5% purity (dried basis)
  • Ideal for laboratory, industrial, and research applications
  • Meets USP-grade quality standards
  • Low impurity levels: iodates <0.0004%, heavy metals <4 mg/kg
  • Produces over 3,000 daily adult doses per pound
  • Certificate of Analysis available for bulk orders

Product Specifications

Chemical Name Potassium Iodide
CAS Number 7681-11-0
Chemical Formula KI
Purity 99.0–101.5% (dried basis)
pH (5% solution) 6–10
Applications Tablet production, laboratory, research, industrial uses


Perfect for pharmaceutical, laboratory, and emergency preparedness applications.
  • Availability: In Stock
  • Model: PI1239
  • Brand: ChemicalStore