Potassium iodide is an inorganic compound with a chemical formula of KI. It is colorless or white crystals, odorless, and has a strong bitter and salty taste. The medicine is used as a diuretic. Adding an appropriate amount of salt can prevent and treat thyroid diseases.
Application
Use 1: Used in photosensitive emulsion, soap, lithography, organic synthesis, medicine, food additives, etc.
Use 2: It is often used as an analytical reagent, and also used in the preparation of photographic emulsifiers and in the pharmaceutical industry.
Use 3: Potassium iodide is a permitted food iodine fortifier, and my country stipulates that it can be used in foods for infants and young children, and the dosage is 0.3-0.6mg/kg. It can also be used for table salt with a dosage of 30-70mL/kg. As a component of thyroxine, iodine participates in the metabolism of all materials in livestock and poultry and maintains heat balance in the body. It is an essential hormone for the growth and reproduction of livestock and poultry. It can improve the growth performance of livestock and poultry and promote body health. If the animal body lacks iodine, it will lead to metabolic disorders, body disorders, goiter enlargement, affecting nerve function, coat color quality, and digestion and absorption of feed, eventually leading to slow growth and development.
Use 4: nutritional supplements (iodine enhancers). The amount of table salt is less than 0.01%.
Use 5: Used as a nutritional supplement (iodine fortifier) in the food industry.
Use 6: Potassium iodide is an allowed food iodine fortifier. It can be used for table salt, the dosage is 30-70mg/kg; the dosage in infant food is 0.3-0.6mg/kg.
Use 7: It is the raw material for the manufacture of iodide and dyes. Used as a photographic emulsifier. In medicine, it is used as an expectorant, diuretic, goiter prevention and treatment agent, and a preoperative drug for hyperthyroidism. It is also used to make rheumatism analgesic ointment with analgesic and blood-activating effects. It is a co-solvent for iodine and some insoluble metal iodides. Use writer animal feed additives.
Use 8: Commonly used reagents for volumetric analysis iodometry. Culture media such as Burlades, Modified White, MS and RM are prepared in haploid species; stool inspection, etc.; photography; pharmacy.
Use 9: feed additives
Potassium iodide is an ionic compound in which iodide ions can form dark yellow precipitated silver iodide with silver ions (see photo decomposition, which can be used to make high-speed photographic film), so silver nitrate can be used to test the presence of iodide ions. As a component of thyroxine, iodine is closely related to the basic metabolism of livestock and poultry, and participates in almost all material metabolism processes. The lack of iodine in livestock will cause hyperplasia and hypertrophy of the thyroid gland, decrease the basal metabolic rate, and affect growth and development. The feed for young animals and livestock and poultry in iodine-deficient areas needs to be iodized. High-yielding dairy cows and high-yielding hens need more iodine, and iodine is also required to be added to their feed. The iodine in milk and eggs increases with the increase of feed iodine. According to reports, high-iodine eggs can reduce human cholesterol levels and are beneficial to the health of hypertensive patients. In addition, during the animal fattening period, although there is no iodine deficiency, in order to make the livestock and poultry thyroid function strong, enhance the anti-stress ability, and maintain the highest production capacity, iodide is also supplemented. Potassium iodide is added to the feed as an iodine source to prevent iodine deficiency. , To promote growth, increase egg production rate and reproduction rate, and improve feed utilization. The addition amount in the feed is generally a few PPM, because it is unstable, usually add iron citrate and calcium stearate (generally add 10%) As a protective agent, make it stable.
Use 10: radiation protection
Countries will distribute or reserve iodine tablets to residents around nuclear power plants, the main ingredient of which is potassium iodide. When radiation leaks from nuclear power plants due to disasters, let nearby residents take iodine tablets to saturate iodine in the thyroid gland and reduce radioactive iodine in the thyroid. -The absorption of 131. However, it needs to be taken within 4 hours when exposed to free iodine radiation to be effective, and it cannot prevent ionizing radiation and isotopes other than iodine-131. Generally, people who take it improperly without instructions can cause symptoms of hyperthyroidism.
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