What Is potassium iodide ?
Potassium Iodide (Potassium Iodide in English) is a non-superior and ionic compound with a chemical formula of KI and a molar mass of 166g/mol. Potassium iodide has different namesThe other one has potassium iodide, petide and iodide.
This chemical compound, like other potassium ionic compounds, has many derivatives, in all of which, 99% of the composition is KI. This chemical compound is in the form of white crystals at room temperature with a density of 3.13g/cm3 and its melting point is 681 degrees Celsius. In terms of weight, potassium iodide crystal contains 76.44% iodine and 23.56% potassium. You can see the crystal structure of potassium iodide in the image below:
Properties of potassium iodide
- White crystalline structure
- It is solid at room temperature.
- The iodine in it is completely stable and does not have any radioactive properties.
- Potassium iodide is stable at normal temperature and pressure (temperature of 25 degrees Celsius and pressure of 1 atm).
- Bitter and salty taste
Application of potassium iodide
- Manufacturing medicine and medical uses
- Use in the production of detergents
- In the production of nylon 6 and 6
- Nuclear industry
- in titration reactions (iodometry)
- Production of food and sports supplements
- Protection of the thyroid gland against radioactive iodine
- As a natural preservative and disinfectant in food packaging
- making soap
- color production
- Photographic film emulsions
- except raw materials for the production of lubricating oils
- Production of thyroid anticancer drug
- Production of drugs to establish hormonal balance
- Making expectorant drugs to open the patient’s airway
- Production of ointment to heal scars and burns
- Production of dietary salts for people with high blood pressure
- Used in industry, for filtration of chlorides and bromides
Safety tips for working with potassium iodide
Be sure to use gloves and glasses if you use too much of it. Its contact with the skin of the hand will cause irritation and skin allergies. If it comes into contact with the skin of the hand, wash the area immediately with water and then see a doctor. When working with potassium iodide, you may be exposed to potassium toxicity or iodism. This toxicity includes the following symptoms:
- Headache
- Irregular heartbeat
- Tooth and gum pain
- Dizziness
- Increased salivation
- Burning mouth or throat
Potassium iodide medical tips
Potassium iodide is very necessary and useful for the body. Many foods are a rich source of potassium and iodine, which deficiency does not normally occur. The use of potassium iodide usually does not bring any risk or side effects, unless certain people who are allergic to iodine or people over 40 years old do not need to use potassium iodide. Of course, people over 40 who have been exposed to a lot of radioactive iodine should also consume it.
Storage of potassium iodide
Direct sunlight as well as moisture (more than a certain level) is harmful to potassium iodide, causing its white color to change to yellow. This change is due to the creation of iodine oxide molecules. So, to maintain it, the following conditions must be met:
- Store in a cool and dry environment.
- away from sunlight (or at least not exposed to direct sunlight)
- The lid of the container should be sealed.
- The environment should not be acidic or alkaline.
Characteristics of potassium iodide
| chemical formula | K.I |
| Molar mass | 166 g/mol |
| density | 3.13 g/cm3 |
| Weight percentage of the manufacturer’s unit | I – 23%K |
| Appearance | white crystalline solid |
| melting point | 681 °C |
| Boiling point | 1330 °C |
| Dissolve in water | 128g/100ml |
Frequently asked questions about potassium iodide
In this section, we will address the most frequently asked questions about potassium iodide:
How and how much is the dissolution of potassium iodide in water?
Potassium iodide is soluble in water and dissolves well. When potassium iodide is dissolved in water, potassium cation ion and iodine anion ion are produced (which will increase water conductivity). Potassium iodide has the ability to dissolve 128 grams in 100 ml of water at ambient temperature (25 degrees Celsius).
What is elephant tooth paste? How is potassium iodide produced?
One of the interesting reactions of potassium iodide is its reaction with hydrogen peroxide, the product of which is separated from the solution in the form of interconnected and tiny bubbles, and the product of this reaction is known as elephant toothpaste. This experiment has become one of the most famous chemistry experiments around the world and today it has become a fun and safe pastime.
Is potassium iodide conductive?
Potassium iodide is not conductive as a solid, due to its crystalline and ionic structure, but when dissolved in water, it produces potassium cation and iodine anion, and these ions will act as charge carriers in water and the conductivity of water will increase.
What is the difference between potassium iodide powder and its pill?
none It is usually available in the market as a powder, but in some cases, it is easier to use it in the form of tablets, so some companies enter the market in the form of tablets.
Is the production of film toothpaste (reaction of potassium iodide with hydrogen peroxide) dangerous?
There is no serious risk.
Hydrogen peroxide may cause skin problems by touching the skin of the hand. On the other hand, because this test has a high speed and its products may be thrown towards your eyes, glasses are definitely necessary for this reaction. On the other hand, concentrated potassium iodide also causes skin damage. So glasses and gloves will prevent danger.
If during this test, the products spilled on the skin of your hand, wash that part with cold water at short intervals and regularly, and if it doesn’t get better, see a doctor immediately.
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