| Formula / Notation | IK |
|---|---|
| CAS Number | 7681-11-0 |
| Molecular Weight | 166.0028 |
| Melting Point | 1258 °F (USCG, 1999) |
| Boiling Point | Very high (USCG, 1999) |
| Density | 3.13 at 59 °F (USCG, 1999) - Denser than water; will sink |
| Solubility | Slightly soluble in ethanol |
| Appearance | Potassium iodide is an odorless white solid. Sinks and mixes with water. (USCG, 1999) |
| Also Known As | 7681-11-0; Thyro-Block; Pima; Kali iodide; Thyroshield; Knollide; Iosat; Kisol; Potassium iodide (KI); Potassium monoiodide |
| Category | Salts |
What is Potassium iodide?
Potassium iodide is a metal iodide salt with a K(+) counterion. It is a scavenger of hydroxyl radicals. It has a role as a NMR chemical shift reference compound, a radical scavenger and an expectorant. It contains an iodide.
Formula & Notation
IUPAC Name: potassium iodide
Other Names / Synonyms: 7681-11-0; Thyro-Block; Pima; Kali iodide; Thyroshield; Knollide; Iosat; Kisol; Potassium iodide (KI); Potassium monoiodide
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 1258 °F (USCG, 1999) |
| Boiling Point | Very high (USCG, 1999) |
| Density | 3.13 at 59 °F (USCG, 1999) - Denser than water; will sink |
| Molecular Weight | 166.0028 |
| Solubility | Slightly soluble in ethanol |
| Appearance | Potassium iodide is an odorless white solid. Sinks and mixes with water. (USCG, 1999) |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Potassium iodide is a metal iodide salt with a K(+) counterion. It is a scavenger of hydroxyl radicals. It has a role as a NMR chemical shift reference compound, a radical scavenger and an expectorant. It contains an iodide.
Used in food preservation, water treatment, chemical synthesis, fertilizers, and pharmaceutical applications.
Irritant or toxic depending on specific salt. Some salts are oxidising agents or toxic to aquatic environments. Consult SDS before use.
The formula or notation for Potassium iodide is: IK