Potassium iodide
SIGMA/60399 - BioUltra, ≥99.5% (AT)
Synonym: KI
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
| absorption | cut-off at 273 nm in H2O at 1 M |
| anion traces | bromide, chloride (as Cl-): ≤100 mg/kg |
| iodate (IO3-): ≤2 mg/kg | |
| phosphate (PO43-): ≤10 mg/kg | |
| sulfate (SO42-): ≤10 mg/kg | |
| application(s) | vitamins, nutraceuticals, and natural products |
| assay | ≥99.5% (AT) |
| cation traces | Al: ≤5 mg/kg |
| As: ≤0.1 mg/kg | |
| Ba: ≤5 mg/kg | |
| Bi: ≤5 mg/kg | |
| Ca: ≤10 mg/kg | |
| Cd: ≤5 mg/kg | |
| Co: ≤5 mg/kg | |
| Cr: ≤5 mg/kg | |
| Cu: ≤5 mg/kg | |
| Fe: ≤5 mg/kg | |
| Li: ≤5 mg/kg | |
| Mg: ≤5 mg/kg | |
| Mn: ≤5 mg/kg | |
| Mo: ≤5 mg/kg | |
| Na: ≤300 mg/kg | |
| Ni: ≤5 mg/kg | |
| Pb: ≤5 mg/kg | |
| Sr: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| form | solid |
| impurities | insoluble matter, passes filter test |
| ≤0.001% total nitrogen (N) | |
| InChI | 1S/HI.K/h1H;/q;+1/p-1 |
| InChI key | NLKNQRATVPKPDG-UHFFFAOYSA |
| loss | ≤0.5% loss on drying, 110 °C |
| mp | 681 °C (lit.) |
| pH | 6.0-9.0 (25 °C, 1 M in H2O) |
| product line | BioUltra |
| Quality Level | 200  |
| SMILES string | [K+].[I-] |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| vapor pressure | 1 mmHg ( 745 °C) |
| Application: | Potassium iodide has been used: • to inhibit active oxygen as a component of processes such as DNA damage • as a chaotropic agent which, in high concentrations can dissolve a gel matrix • in the recovery of DNA from gel slices by gel dissolution |
| Biochem/physiol Actions: | Potassium iodide (KI) consists of halogen iodine and the alkali metal potassium. It is used in the form of iodized salt to treat endemic goiter. KI is also used to treat hyperthyroidism and radiation protection of the thyroid gland. KI is useful for the preoperative preparation of patients with Grave′s disease. It also finds its use in treating dermatological conditions like cutaneous sporotrichosis and various inflammatory dermatoses. KI is commonly used as an expectorant. It inhibits the capacity of neutrophils to produce e toxic oxygen intermediates hydrogen peroxide and hydroxyl radicals in vitro. |
| 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 | ≥99.5% (AT) |
| mp | 681 °C (lit.) |
| UNSPSC | 12352302 |