Potassium iodide
CAS: 7681-11-0
MF: KI
MW: 166
Melting point 113 °C(lit.)
Boiling point 184 °C(lit.)
Density 1.32 g/mL at 25 °C
PH 6.0-9.0 (25℃, 1M in H2O)
Water Solubility 1.43 kg/L
Properties:
Colorless monoclinic crystal or white crystalline powder, soluble in water, dilute acid and ethylene diamine, ethanolamine and potassium iodide solution; Slightly soluble in liquid sulphur dioxide and ammonia; Insoluble in alcohol and ammonia. In alkaline medium, potassium iodate, hypochlorous acid, etc can be chlorine gas stronger antioxidant for potassium periodate oxidation.
Usage:
Used in chemical analysis, as precipitating agent; Agriculture as feed additive; Medicine on the prevention and control of local goitre disease.