- Tianqiao District, Jinan City, Shandong Province, China
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Zinc iodide (MF: I₂Zn; MW: 319.2) is a white, fine-grained powder that is highly hygroscopic. When exposed to light in the air, it releases iodine and gradually turns brown. It is highly soluble in water and miscible with ethanol, diethyl ether, and ammonia water. It is chemically reactive and can act as a Lewis acid to catalyze organic reactions. It serves as an important raw material in various fields, including as an analytical reagent, an organic synthesis catalyst, a medical disinfectant and astringent, and a battery electrolyte.
| Item | Specification |
| Melting Point | 446 °C |
| Boiling Point | 624 °C (decomposes) |
| Density | 4.74 g/mL at 25 °C |
| Flash Point | N/A |
| Refractive index | 1.955 |
| Solubility | 450 g/100 mL (20°C); soluble in ethanol, diethyl ether, ammonia water, NaOH, and ammonium carbonate solutions; slightly soluble in glycerol. |
| Stability | Stable at room temperature; decomposes upon exposure to light, releasing iodine; highly hygroscopic; reacts violently with strong oxidizing agents. |
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