Molekula
Potassium iodide ACS Grade
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Potassium iodide ACS Grade is a high-purity inorganic salt composed of potassium and iodine, widely used as a laboratory reagent, antiseptic, and in thyroid medication. It is also used in making photographic emulsions and as an iodine source for iodized table salt and animal and poultry feeds. It serves as a source of iodide ions in analytical chemistry and is essential in the production of pharmaceuticals and nutritional supplements. CAS 7681-11-0, molecular formula IK, molecular weight 166.002 g/mol. Store at ambient conditions. Signal word: Danger. Molekula supplies Potassium iodide ACS Grade from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline powder |
| Heavy metals | ≤5ppm |
| Loss on Drying | ≤0.2% |
| Assay | ≥99.0% |
| Insoluble Matter | ≤0.005% |
| Iron (Fe) | 0.0003% |
| Lead (Pb) | ≤5 ppm |
| Calcium (Ca) | 0.002% |
| Magnesium (Mg) | 0.001% |
| Barium (Ba) | ≤0.002% |
| pH (5% sol) | 6.0 - 9.2 |
| Sodium (Na) | 0.0003% |
| Sulphates (SO4)(2-) | ≤0.005% |
| Iodates | ≤3 ppm |
| Phosphate (PO4)3- | ≤0.001% |
| Chloride, Bromide (as Chloride) | ≤0.01% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Hexahedral crystals, either transparent or somewhat opaque |
| Melting Point | 681 °C |
| Boiling Point | 1323 °C |
| Density | 3.12 g/cm³ |
| Solubility (other solvents) | Slightly soluble in ethanol |
| Vapour Pressure | 1 mmHg at 745 °C |
| Refractive Index | 1.677 |
Source: PubChem CID 4875 (HSDB, PAC Chemical Database)
Identification
| Property | Value |
|---|---|
| SKU | 90030184 |
| CAS Number | 7681-11-0 |
| IUPAC Name | potassium iodide |
| EC Number | 231-659-4 |
| Molecular Formula | IK |
| Molecular Weight | 166.002 |
| Exact Mass | 165.8682 |
| SMILES | [K+].[I-] |
| InChIKey | NLKNQRATVPKPDG-UHFFFAOYSA-M |
| InChI | InChI=1S/HI.K/h1H;/q;+1/p-1 |
| PubChem CID | 4875 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2827.60.2000 |
| Tariff Code | 2827600090 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H303 May be harmful if swallowed
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H360FD May damage fertility. May damage the unborn child.
- H372 Causes damage to organs through prolonged or repeated exposure
- H411 Toxic to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P263 Avoid contact during pregnancy/while nursing
- P273 Avoid release to the environment
- P302+P352 IF ON SKIN: Wash with soap and water
- P304+P340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+P351+P338 IF IN EYES: Rinse continuously with water for several minutes. Remove contact lenses if present and easy to do, continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, German, Spanish, French, Italian, Portuguese, Arabic, Dutch.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Iosat
- Kali iodide
- Kisol
- Knollide
- Pima
- potassium iodide
- Potassium iodide (KI)
- Potassium monoiodide
- Thyro-Block
- Thyroshield
Frequently asked questions
What is potassium iodide (ACS Grade) commonly used for?
Potassium iodide (ACS Grade) is primarily used as a reagent in analytical chemistry, including iodometry titrations, and as a source of iodide ions in laboratory experiments.
What is the chemical formula and molecular weight of potassium iodide?
The chemical formula is **KI** and the molecular weight is **166.002 g/mol**.
How should potassium iodide (ACS Grade) be stored?
Store in a tightly sealed container at **ambient temperature**, away from moisture and strong oxidizing agents.
What grade of potassium iodide does Molekula supply, and is ACS Grade available?
Molekula supplies **ACS Grade** potassium iodide, meeting the purity standards for analytical and laboratory applications.
Can Molekula supply potassium iodide in bulk quantities?
Yes, Molekula can supply potassium iodide in bulk, with quantities tailored to your requirements—please contact us for pricing and availability.
What documentation comes with an order of potassium iodide (ACS Grade)?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet confirming ACS Grade compliance.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.