1. Potassium iodide (KI) Tiffany Wong F.3D (31)

2. Potential Hazards Irritant OxidisingToxic

3. Basic information Physical Properties  Melting Point:681 °C  Boiling Point:1330 °C  Physical state at room temperature:crystalline solid  Colour: white  Density: 3.123 g/cm3  Solubility in water: 128 g/100 ml (0 °C) 206 g/100 mL (100°C)  Do not conduct electricity Chemical Properties  Mild reducing agent  Easily oxidised by powerful oxidising agent, such as chlorine  KI is oxidised even more easily under acidic conditions Precautions  Potassium iodide is a mild irritant, so it should be handled with gloves

4. Uses  contained in hair processing chemicals in order to prevent later sun bleaching  used in photography, in the preparation of silver (I) iodide for high speed photographic film  used as an expectorant to treat lung congestion Interesting characteristics  Potassium iodide may also be used to protect the thyroid from radioactive iodine in the event of an accident or attack at a nuclear power plant, or other nuclear attack  In case of a nuclear emergency, iodine is used for the cleaning of wounds and should not be ingested. It is a poison.

5. Resources http://en.wikipedia.org/wiki/Potassium_iodidehttp://en.wikipedia.org/wiki/Potassium_iodide ‚http://www.righthealth.com/topic/Potassium_io didehttp://www.righthealth.com/topic/Potassium_io dide ƒhttp://www.healthcareprescriptiondrugabuse.co m/Potassium_iodide.htmlhttp://www.healthcareprescriptiondrugabuse.co m/Potassium_iodide.html