Potassium iodide

Potassium iodide
Clinical data
Trade names	Iosat, Thyrosafe, Thyroshield, others
Other names	SSKI
AHFS/Drugs.com	Monograph
License data	US DailyMed: Potassium iodide;
Routes of; administration	By mouth
ATC code	R05CA02 (WHO) S01XA04 (WHO), V03AB21 (WHO);
Legal status
Legal status	US: WARNINGOTC;
Identifiers
	IUPAC name Potassium iodide;
CAS Number	7681-11-0 ;
PubChem CID	4875;
DrugBank	DB06715;
ChemSpider	4709;
UNII	1C4QK22F9J;
KEGG	D01016;
ChEBI	CHEBI:8346;
ChEMBL	ChEMBL1141;
CompTox Dashboard (EPA)	DTXSID7034836 ;
ECHA InfoCard	100.028.782
Chemical and physical data
Formula	KI
3D model (JSmol)	Interactive image;
Density	3.13 g/cm3
Melting point	681 °C (1,258 °F)
Boiling point	1,330 °C (2,430 °F)
Solubility in water	1280 mg/mL (0 °C (32 °F)) ; 1400 mg/mL (20 °C (68 °F)) ; 1760 mg/mL (60 °C (140 °F)) ; 2060 mg/mL (100 °C (212 °F)) 2 0 0
	SMILES [K+].[I-];
	InChI InChI=1S/HI.K/h1H;/q;+1/p-1 ; Key:NLKNQRATVPKPDG-UHFFFAOYSA-M;

Potassium iodide is a chemical compound, medication, and dietary supplement. It is a medication used for treating hyperthyroidism, in radiation emergencies, and for protecting the thyroid gland when certain types of radiopharmaceuticals are used. In the third world it is also used for treating skin sporotrichosis and phycomycosis. It is a supplement used by people with low dietary intake of iodine. It is administered orally.

Common side effects include vomiting, diarrhea, abdominal pain, rash, and swelling of the salivary glands. Other side effects include allergic reactions, headache, goitre, and depression. While use during pregnancy may harm the baby, its use is still recommended in radiation emergencies. Potassium iodide has the chemical formula K I. Commercially it is made by mixing potassium hydroxide with iodine.

Potassium iodide has been used medically since at least 1820. It is on the World Health Organization's List of Essential Medicines. Potassium iodide is available as a generic medication and over the counter. Potassium iodide is also used for the iodization of salt.

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