7681-11-0-Potassium-Iodide-Chromatography-250 Potassium Iodide for Chromatography CAS Number: 7681-11-0 Assay: Min. 99.5% Linear Formula: KI Molecular Weight: 166.00 Physical Form: Other Packaging: Glass Bottle, Glass Bottle, Plastic Bottle, Plastic Bottle, PC