Potassium iodide
SIGALD/30315 - puriss. p.a., reag. ISO, reag. Ph. Eur., ≥99.0%
CAS Number: 7681-11-0
Empirical Formula (Hill Notation): KI
Molecular Weight: 166.00
EC Number: 231-659-4
MDL Number: MFCD00011405
Linear Formula: KI
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 30315-250G
This image depicts SKU: 30315-250G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 30315-100G
This image depicts SKU: 30315-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 30315-500G
This image depicts SKU: 30315-500G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 30315-1KG
This image depicts SKU: 30315-1KG
| agency | reag. ISO |
| reag. Ph. Eur. | |
| USP/NF | |
| anion traces | bromide, chloride (as Cl-): ≤100 mg/kg |
| iodate (IO3-): ≤2 mg/kg | |
| phosphate (PO43-): ≤10 mg/kg | |
| sulfate (SO42-): ≤10 mg/kg | |
| assay | ≥99.0% |
| 99.0-100.5% (calc. to the dried substance) | |
| cation traces | As: ≤0.1 mg/kg |
| Ba: ≤20 mg/kg | |
| Ca: ≤10 mg/kg | |
| Fe: ≤3 mg/kg | |
| Mg: ≤10 mg/kg | |
| Na: ≤300 mg/kg | |
| description | REDUCING SUBSTANCES complying |
| form | solid |
| grade | puriss. p.a. |
| impurities | ≤0.0005% heavy metals (as Pb) |
| ≤0.001% total nitrogen (N) | |
| ≤0.005% thiosulfate (S2O3) | |
| ≤0.02% free alkali (as KOH) | |
| InChI | 1S/HI.K/h1H;/q;+1/p-1 |
| InChI key | NLKNQRATVPKPDG-UHFFFAOYSA |
| loss | ≤0.5% loss on drying, 105 °C |
| mp | 681 °C (lit.) |
| pH | 6.0-8.0 (20 °C, 5%) |
| Quality Level | 200  |
| SMILES string | [K+].[I-] |
| solubility | water: complete (ca.1,430 g/l at 25 °C (77 °F)) |
| vapor pressure | 1 mmHg ( 745 °C) |
| Application: | Potassium iodide is used as: • An iodine source in the synthesis of 1-iodoalkynes and iodophenols from alkynes and phenols using tert-butyl hydroperoxide (TBHP) as oxidant. • A catalyst in the synthesis of sulfonated oxindoles by arylsulfonylation of activated alkenes using sulfonylhydrazides as sulfonyl precursor, and water as solvent. • An oxidative degradation inhibitor to reduces oxidative degradation of monoethanolamine (MEA). |
| General description: | Potassium iodide (KI) is a chemical compound that can be used as an iodide ion source for nucleophilic displacement reactions. During the electrochemical oxidation of aldehydes, it acts as a mediator. In the presence of an acid, it can cleave some ethers. KI can iodinate aromatic and organothallium compounds in the presence of an oxidizing agent. Additionally, it can form symmetrical thiosulfonic S-esters by reacting with sulfonyl chlorides. |
| Symbol |  GHS08 |
| Signal word | Danger |
| Hazard statements | H372 |
| Precautionary statements | P260 - P264 - P270 - P314 - P501 |
| Hazard Codes | Xn |
| Risk Statements | 22-36/38 |
| Safety Statements | 26 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Purity | ≥99.0%; 99.0-100.5% (calc. to the dried substance) |
| mp | 681 °C (lit.) |
| UNSPSC | 12352302 |