Potaassium iodide 7681-11-0

CAS no. : 7681-11-0

EINECS no. : 231-659-4

Chemical formula: KI

Molar mass: 166.0028 g/mol

Appearance: white crystal

Density: 3.123 g/cm3

Melting point: 681 ° C (954 K)

Boiling point: 1330 ° C (1603 K)

use

1. Potassium iodide is commonly used as a synergistic agent for iron and steel pickling corrosion inhibitors or other corrosion inhibitors. Potassium iodide is a raw material for preparing iodides and dyes. Used as photographic emulsifier, food additive, expectorant, diuretic, medicine for treatment of goiter and hyperthyroidism, also used as analytical reagent. Used as photographic emulsifier, medicine and food additive.

2. Used as feed additive. Iodine, as a component of thyroxine, is involved in metabolism of all substances in livestock and poultry and maintains internal thermal balance. Iodine is an essential hormone for the growth, reproduction and lactation of livestock and poultry. If animal flesh body lacks iodine, can bring about metabolism disorder, organic body produces obstacle, goiter, affect nerve function and be mixed by wool lubricious qualitative the digestion of feed is absorbed, bring about growth eventually development is slow.

3. Food industry as a nutritional supplement (iodine fortifier). It can also be used as feed additive.

4. Used as analytical reagent, such as preparation of iodine standard solution as auxiliary reagent. It is also used as photosensitive emulsifier and feed additive. Used in the pharmaceutical industry.

5. Potassium iodide is a cosolvent of iodine and certain insoluble metal iodides.

6. Potassium iodide is mainly used in surface treatment in two aspects: one is for chemical analysis, the application of iodide ion of medium reducing and some oxidation ion reaction, the generation of simple iodine, and then through the determination of iodine to calculate the concentration of the measured substance; The second one is used for the complexation of some metal ions. Its typical use is as the complexant of cuprous and silver in the copper silver alloy of electroplating.

7 we often eat the so-called iodinated edible salt is in common salt (pure sodium chloride) in the addition of potassium iodide or potassium iodate (by the ratio of 1/20,000).

8. Potassium iodide has some special USES in dermatology. Its mechanism of action is due in part to enhanced dissolution and digestion of necrotic tissue. Potassium iodide also has antifungal activity. It is clinically used to treat sporotrichosis, pigmented blastomycosis, persistent nodular erythema and nodular vasculitis. When using potassium iodide also want to pay attention to its side effects, it can cause pustules, blisters, erythema, eczema, urticaria and so on, can also make acne aggravation, of course, can also cause gastrointestinal reactions and mucosal symptoms.

9. It is used in medicine to prevent and treat endemic goiter, promote the absorption of turbid vitreous in eyes and dispel phlegm. It can also be used as an analytical reagent, chromatography and point pain analysis.