Potassium iodide
CAS number: 7681-11-0
Molecular weight: 166.003
Density: 3.13
Boiling point: 1330 °C
Melting point: 680 °C
Molecular formula: IK, composed of potassium ions (K⁺) and iodide ions (I⁻). At room temperature, it is a colorless or white crystalline powder with a salty and slightly bitter taste. It is easily soluble in water and gradually oxidizes and decomposes in light or air.

Dosage reference:
Adults and children over 12 years old: 130 mg of potassium iodide per dose;
Children aged 6-11: 65 mg of potassium iodide per dose;
Children aged 3-5: 32.5 mg of potassium iodide per dose;
Newborns to 2-year-old infants: 16.25 mg of potassium iodide per dose;
Pregnant or breastfeeding women: 130 mg of potassium iodide per dose.

For radiation protection or medical use, you can buy it on Amazon, Walmart, or at pharmacies.
For commercial quantities of potassium iodide powder, you can contact Highassay. Highassay, as a professional supplier of pharmaceutical and chemical raw materials, provides potassium iodide powder in various specifications, from 1 kg to tons.

For radiation protection or medical use, you can buy it on Amazon, Walmart, or at pharmacies.
For commercial quantities of potassium iodide powder, you can contact Highassay. Highassay, as a professional supplier of pharmaceutical and chemical raw materials, provides potassium iodide powder in various specifications, from 1 kg to tons.

In the medical field, potassium iodide can ensure adequate iodine nutrition for the human body and is also used as an auxiliary treatment for thyroid diseases. It can also be used as a feed additive to supplement iodine for livestock.
It is used for emergency protection against nuclear radiation.
In industrial production, potassium iodide can be used in the manufacture of photosensitive materials and is an important photosensitive component in photographic film and photographic paper. Potassium iodide is also used in the electroplating industry.
In the pharmaceutical industry, potassium iodide is an important chemical raw material that can be used to produce complex drugs.

Take it 1-2 hours before radiation exposure or within a few hours after exposure; the effect will decrease significantly after 6 hours.

The main component of potassium iodide is KI, containing iodide ions and potassium ions.

Because iodine is a very reactive element, it reacts with water and air to form other substances. Iodine is difficult to exist stably in its elemental form, so we generally use common compounds of iodine, such as potassium iodide and potassium chloride.

The potassium iodide formula is KI.

Potassium iodide (KI) is a typical ionic compound, not a covalent compound.
Its ionic compound properties stem from the electronegativity difference of its constituent elements and the type of chemical bond: iodine (I) is a halogen nonmetal element with high electronegativity, and potassium (K) is an alkali metal element with very low electronegativity (very strong metallic character). The electronegativity difference between the two is far greater than 1.7 (the critical value for determining ionic bonds). The potassium atom completely loses its outermost electron to form K⁺, and the iodine atom gains one electron to form I⁻. They form an ionic bond through electrostatic attraction, ultimately forming an ionic compound.

Potassium iodide is readily soluble in water, and completely dissociates into K⁺ and I⁻ ions when dissolved in water.

People allergic to iodine should not ingest potassium iodide.
Patients with hyperthyroidism should also not ingest potassium iodide.
Some people should only use it under the guidance of a doctor, such as those with renal insufficiency, hyperkalemia, or gastric ulcers.

Using potassium hydroxide and elemental iodine as raw materials, an oxidation-reduction reaction occurs in an aqueous solution. The solution is then heated to evaporate and crystallize, separating out potassium iodate impurities to obtain high-purity potassium iodide crystals, which are then dried and ground into powder/tablets.
Please note that homemade potassium iodide is not edible because heavy metals or harmful impurities have not been removed.

Of course it is, potassium iodide is a strong electrolyte.

Yes, it expires. The usual shelf life of sealed potassium iodide powder is 2 years. If opened, it is susceptible to moisture and oxidation, and the shelf life will be shorter.

One important use of potassium iodide, widely known to the public, is emergency protection in nuclear radiation accidents. This effect stems from its “blocking effect” on the thyroid gland. When a nuclear radiation accident occurs, radioactive iodine (such as iodine-131) is released into the environment. This radioactive substance has the same uptake mechanism as the ordinary iodine required by the human thyroid gland. Once absorbed by the thyroid, the radiation it releases can damage thyroid cells, and long-term exposure may increase the risk of thyroid cancer.
In this case, taking a prescribed dose of potassium iodide under professional guidance can allow the thyroid to absorb enough iodide ions in a short time and reach a saturated state. When the thyroid is “full” of iodine, it will reduce the uptake of radioactive iodine from the environment, thereby significantly reducing the amount of radioactive iodine deposited in the thyroid and greatly reducing the damage caused by radiation to the thyroid. It is important to note that the radiation protection effect of potassium iodide is specific and time-sensitive: it is only effective against radioactive iodine and has no protective effect against other radioactive substances (such as cesium-137, strontium-90, etc.); it should be taken 1-2 hours before exposure or within a few hours after exposure. The effect will decrease significantly after 6 hours, and the effect will decrease drastically after the time window has passed. Dosage Reference:
Adults and children over 12 years old: 130 mg potassium iodide per dose;
Children aged 6-11 years: 65 mg potassium iodide per dose;
Children aged 3-5 years: 32.5 mg potassium iodide per dose;
Newborns to 2-year-old infants: 16.25 mg potassium iodide per dose;
Pregnant or breastfeeding women: 130 mg potassium iodide per dose.
Furthermore, potassium iodide has strict dosage standards; taking excessive amounts can cause adverse reactions and should not be taken indiscriminately without medical supervision.