Question

how can you preserve the iodine of common salt​

Answer 1

Answer:

Dextrose is added as a stabilizer to prevent potassium iodide from oxidizing and evaporating. Anti-caking agents such as calcium silicate are commonly added to table salt to prevent clumping.

Answer 2

Answer:

sodium carbonate or sodium bicarbonate

Explanation:

While iodate can be used alone and in any type of salt quality, iodide is used in very good quality salt and cannot be added alone. Therefore, some salt producers add sodium carbonate or sodium bicarbonate when they iodize salt, to increase alkalinity, and sodium thiosulfate or dextrose to stabilize potassium iodide.

Another Method:

The iodine retention was above 80% in other methods--88.41% retention in a cut open salt packet, 84.72% in a glass jar, 82.86% in an earthen pot, and 80.85% in a plastic jar. Powdered salt had maximum iodine retention (91.16%) followed by brown crystal salt (84.24%) and white crystal salt (76.71%)