30315

Kaliumiodid

puriss. p.a., reag. ISO, reag. Ph. Eur., ≥99.0%

• Lineare Formel: KI
• CAS-Nummer: 7681-11-0
• Molekulargewicht: 166.00
• EG-Nummer: 231-659-4
• MDL-Nummer: MFCD00011405
• UNSPSC-Code: 12352302
• PubChem Substanz-ID: 329753460
• NACRES: NA.21

Eigenschaften

• Agentur: USP/NF; reag. ISO; reag. Ph. Eur.
• Qualitätsniveau: 200
• Dampfdruck: 1 mmHg ( 745 °C)
• Beschreibung: REDUCING SUBSTANCES complying
• Qualität: puriss. p.a.
• Assay: ≥99.0%; 99.0-100.5% (calc. to the dried substance)
• Form: solid
• Verunreinigungen: ≤0.0005% heavy metals (as Pb); ≤0.001% total nitrogen (N); ≤0.005% thiosulfate (S₂O₃); ≤0.02% free alkali (as KOH)
• Verlust: ≤0.5% loss on drying, 105 °C
• pH-Wert: 6.0-8.0 (20 °C, 5%)
• mp (Schmelzpunkt): 681 °C (lit.)
• Anionenspuren: bromide, chloride (as Cl^-): ≤100 mg/kg; iodate (IO₃^-): ≤2 mg/kg; phosphate (PO₄^3-): ≤10 mg/kg; sulfate (SO₄^2-): ≤10 mg/kg
• Kationenspuren: 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
• SMILES String: [K+].[I-]
• InChI: 1S/HI.K/h1H;/q;+1/p-1
• InChIKey: NLKNQRATVPKPDG-UHFFFAOYSA-M

Beschreibung

Allgemeine Beschreibung

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.

Anwendung

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).

Sicherheitshinweise

• Piktogramme: GHS08
• Signalwort: Danger
• H-Sätze: H372
• P-Sätze: P260 - P264 - P270 - P314 - P501
• Gefahreneinstufungen: STOT RE 1 Oral
• Zielorgane: Thyroid
• Lagerklassenschlüssel: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• WGK: WGK 3
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable