What is Potassium Iodide (KI)?

Potassium iodide is an inorganic chemical compound which is dedetailed by the chemical formula KI.

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Potassium iodide is a metal-halide salt featuring an ionic bond between the potassium cation (K+) and also the iodide anion (I–). It is colourmuch less to white, it shows up as cubical crystals, or powder or white granules. It has a highly bitter, saline taste.


This compound is all set by iodine and mixing potassium hydroxide. It is among the the majority of efficient and safe medications forced in a health mechanism and also is in the list of the World Health Organization’s List of Essential Medicines.

Properties of Potassium Iodide

1. Physical Properties

KIPotassium Iodide
Molecular Weight/ Molar Mass166.0028 g/mol
Density3.12 g/cm3
Boiling Point1,330 °C
Melting Point681 °C

2. Chemical Properties

Potassium iodide deserve to be oxidized into an I2 molecule by presenting an oxidizing agent to it. An instance of such a reactivity is provided below.

2KI + Cl2 → 2 KCl + I2

This compound is offered as an iodide source in numerous organic synthesis reactions. One such example is the synthesis of aryl iodides from the diazonium salts of arenes.

Potassium Iodide Structure (KI Structure)

A molecule of potassium iodide consists of one potassium cation and one iodide anion, which are held together by an ionic bond. The framework of a KI molecule is shown below.


Uses of Potassium Iodide

It is offered as a nutritional supplement in the humale diet and also in pet feeds.It is used in table salt as the the majority of widespread additive.It is supplied to stop the loss of iodine as a result of oxidation from salts.It is provided in the treatment of hyperthyroidism.It helps in cultivating hormonal balance.It helps to filter out chlorides, bromides, fluorides, and mercury from cells and tproblems.It is used as an expectorant to break up the mucus so the patient can breathe conveniently.It deserve to assist in shrinking the size of the thyroid gland and additionally decreases the number of thyroid hormones produced.

Frequently Asked Questions

What is potassium iodide supplied for?

Potassium iodide and anti-thyroid medications are also supplied to prepare the thyroid gland for surgical removal, to treat various other overenergetic thyroid disorders (hyperthyroidism), and also to defend the thyroid in an emergency of radiation exposure.

How perform you make potassium iodide?

Potassium iodide (KI) is all set by reacting potassium hydroxide to iodine with a warm solution. It is supplied mainly in the form of a saturated solution, 100 g potassium iodide to 100 ml water. That amounts to about 50 mg / drop. Until drinking, the solution is usually used to the tea, fruit juice or milk.

What does potassium iodide execute for the body?

KI (potassium iodide) is a secure (not radioactive) iodine salt that can assist prevent the absorption of radioenergetic iodine by the thyroid gland also, for this reason shielding this gland also from radiation injury. The thyroid gland is the many sensitive component of the body to radioenergetic iodine.

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What happens if you eat potassium iodide?

If potassium iodide upsets your stomach, take it after meals or with food or milk, unless your doctor has actually argued otherwise. If your stomach starts to acquire upcollection (nausea, vomiting, abdominal pain or diarrhea), consult via your medical professional.

What are the side results of potassium iodide?

Serious side results of Potassium Iodide include: allergic reactions (skin rashes such as hives; swelling of assorted components of the body, such as the challenge, lips, tongue, neck, hands or feet; fever through joint pain, obstacle breapoint, speaking or swallowing, wheezing or shortness of breath)