Description
Potassium Iodide 99.9% – Pure Reagent CAS No.: 7681-11-0
Potassium Iodide (KI) is a white crystalline compound with very high purity and stability. It dissolves easily in water and is widely used in laboratories, industry, and education. Because of its simple structure and clean properties, it is one of the most practical and reliable reagents in modern chemistry.
This compound works as a source of iodide ions, which are important in many types of chemical reactions. It is often chosen for analytical experiments, chemical synthesis, and industrial formulations. In addition, Potassium Iodide plays a key role in photography, polymer stabilization, and research applications.
Physical and Chemical Properties
| Property | Value |
|---|---|
| Chemical formula | KI |
| Purity | 99.9% |
| CAS No. | 7681-11-0 |
| Molecular weight | 166.00 g/mol |
| Form | Solid, crystalline powder |
| Color | White |
| Odor | Odorless |
| Melting point (mp) | 685 °C |
| Boiling point (bp) | 1325 °C (1013 hPa) |
| Vapor pressure | 1 hPa (745 °C) |
| Density | 3.23 g/cm³ (25 °C) |
| Solubility in water | 1430 g/L |
| pH (50 g/L, H₂O, 20 °C) | 6.9 |
Applications
Potassium Iodide has many scientific and practical uses.
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It serves as a key reagent in analytical and inorganic chemistry.
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The compound is a source of iodine ions in laboratory and industrial work.
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In addition, it is applied in photographic chemicals and polymer stabilizers.
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It also supports chemical synthesis and pharmaceutical experiments.
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Moreover, it works well as a catalyst or additive in controlled reactions.
Because of these features, it is useful for scientists, educators, and industrial engineers alike.
Chemical Grade Definitions
| Grade | Description |
|---|---|
| Pure p.a. (Pro analysi) | High-purity reagent used for analytical and laboratory testing. |
| Pure | Quality chemical suitable for general lab, industrial, or educational use (not for food). |
| Technical | Standard-grade chemical for teaching, agriculture, or basic technical applications. |
Storage and Safety
Store the product in a dry, cool, and well-ventilated place.
Always close the container tightly and keep it away from sunlight and humidity.
Avoid contact with oxidizing substances.
When working with this material, wear protective gloves and goggles for safety.
⚠️ FOR LABORATORY AND R&D USE ONLY
Not intended for food, pharmaceutical, or personal applications.





