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Potassium Iodide
Potassium Iodide (Product Code: SCI-543/235) is an analytical reagent grade iodide salt used to prepare iodine solutions, run iodometric titrations and test for lead and silver ions in school and college chemistry laboratories. Teachers and lab assistants order it as a 100 g pack, and each pack is accompanied by its MSDS. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, a laboratory chemicals supplier in India for institutions and dealers.
Specifications
| Parameter | Detail |
|---|---|
| Grade | Analytical reagent |
| Pack size | 100 g |
| Safety documentation | MSDS supplied with the pack |
| Shelf life | Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted. |
| Product code | SCI-543/235 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Potassium Iodide Used For?
Iodine barely dissolves in plain water, but it dissolves readily in potassium iodide solution because the iodide ion combines with iodine to form the soluble triiodide ion. That is why potassium iodide is the base of the iodine solution used in the starch test on food samples and leaves. In volumetric analysis it releases iodine from oxidising agents, and the liberated iodine is then titrated with sodium thiosulfate using starch as the indicator.
In qualitative work, potassium iodide solution added to a lead salt gives a bright yellow lead iodide precipitate that redissolves in hot water and reappears as glittering crystals on cooling, a popular classroom demonstration. With silver nitrate it forms pale yellow silver iodide. Store the crystals in a tightly closed, dark bottle, because iodide slowly oxidises in light and moist air and turns yellow-brown.
Supplier
Jain Scientific Equipments Private Limited trades as ScienceLab and supplies Potassium Iodide from Ambala, Haryana, alongside the iodine, starch and thiosulfate that complete an iodometry bench. The reagent is sourced for teaching and routine analytical use, and the MSDS travels with every pack so your safety file stays current. Company background is on the ScienceLab profile page.
Related Laboratory Equipment
Iodine chemistry practicals that use Potassium Iodide usually call for these items as well:
- Iodine (Crystals) — dissolves in potassium iodide solution to make the iodine reagent.
- Soluble Starch 100g — the indicator that turns blue-black with free iodine.
- Sodium Thiosulfate 100 g — the titrant for iodine released in iodometric titrations.
- Lead Nitrate — gives the yellow lead iodide precipitate in the golden-rain demonstration.
- Potassium Iodine-Iodine Solution — a ready-prepared iodine solution if you prefer not to mix your own.
Browse the Laboratory Equipment category for other reagents and glassware.
Frequently Asked Questions
What is Potassium Iodide used for in a school laboratory?
Potassium Iodide is used mainly to dissolve iodine for the starch test, to liberate iodine in iodometric titrations and to test for lead and silver ions. Senior school and college students meet it in food tests, redox titrations and qualitative inorganic analysis.
Why is iodine dissolved in Potassium Iodide instead of water?
Iodine is only slightly soluble in water, but Potassium Iodide solution dissolves it easily because iodide and iodine combine to form the triiodide ion. The result is a stable, usable iodine reagent for starch tests and titrations.
What grade and pack size is this Potassium Iodide?
This Potassium Iodide (SCI-543/235) is listed as analytical reagent grade and comes as a 100 g pack. An MSDS is supplied with it, giving hazard, handling, storage and disposal information for your laboratory safety records.
How should Potassium Iodide be stored?
Keep Potassium Iodide in its tightly closed container in a cool, dry, dark reagent cupboard. Exposure to light and moist air slowly oxidises iodide to iodine, which turns the white crystals yellow; discoloured material should not be used for quantitative work.
What is the shelf life of Potassium Iodide?
Shelf life depends on the chemical, its grade and storage conditions, so we do not quote a fixed period for Potassium Iodide. Ask us for the expiry date of the batch you are quoted, and store it sealed and away from light.
Can institutions order Potassium Iodide in bulk or for export?
Yes. Schools, colleges, dealers and importers can order Potassium Iodide in multiples of the 100 g pack for India and international markets. Share the quantity, destination and any tender or vendor forms through the contact page for a quotation.
Request a Quote
To price Potassium Iodide, tell us how many 100 g packs you need and where they should be delivered using the contact form, or add the item to the enquiry cart together with iodine crystals and starch for a complete iodine practical. Our team replies with availability and a quotation.
Last updated: 24 September 2026
