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30315

Sigma-Aldrich

Iodure de potassium

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

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About This Item

Formule linéaire :
KI
Numéro CAS:
7681-11-0
Poids moléculaire :
166.00
Numéro CE :
231-659-4
Numéro MDL:
MFCD00011405
Code UNSPSC :
12352302
ID de substance PubChem :
329753460
Nomenclature NACRES :
NA.21

Agence

USP/NF
reag. ISO
reag. Ph. Eur.

Niveau de qualité

200

Pression de vapeur

1 mmHg ( 745 °C)

Description

REDUCING SUBSTANCES complying

Qualité

puriss. p.a.

Pureté

≥99.0%
99.0-100.5% (calc. to the dried substance)

Forme

solid

Impuretés

≤0.0005% heavy metals (as Pb)
≤0.001% total nitrogen (N)
≤0.005% thiosulfate (S2O3)
≤0.02% free alkali (as KOH)

Perte

≤0.5% loss on drying, 105 °C

pH

6.0-8.0 (20 °C, 5%)

Pf

681 °C (lit.)

Traces d'anions

bromide, chloride (as Cl-): ≤100 mg/kg
iodate (IO3-): ≤2 mg/kg
phosphate (PO43-): ≤10 mg/kg
sulfate (SO42-): ≤10 mg/kg

Traces de cations

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

Chaîne SMILES 

[K+].[I-]

InChI

1S/HI.K/h1H;/q;+1/p-1

Clé InChI

NLKNQRATVPKPDG-UHFFFAOYSA-M

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Catégories apparentées

Description générale

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.

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).

Pictogrammes

Health hazard
GHS08

Mention d'avertissement

Danger

Mentions de danger

H372

Classification des risques

STOT RE 1 Oral

Organes cibles

Thyroid

Code de la classe de stockage

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Certificats d'analyse (COA)

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Nils Erik Halvorsen et al.
Pharmaceuticals (Basel, Switzerland), 13(2) (2020-02-15)
A simple color spot test for determining the presence of residual tetrabutylammonium (TBA) in various 18F-radiopharmaceuticals is described. The test can be performed in less than five minutes. Iodoplatinate-saturated TLC plates are initially spotted with the 18F-radiopharmaceutical to be tested
Y Miyachi et al.
The British journal of dermatology, 107(2), 209-214 (1982-08-01)
The effects of potassium iodide, colchicine and dapsone on the in vitro generation of polymorphonuclear leukocyte (PMN)-derived oxygen intermediates were investigated. These three drugs have beneficial effects on those conditions in which PMNs play an important pathogenetic role. Three oxygen
V Witko-Sarsat et al.
Journal of immunology (Baltimore, Md. : 1950), 161(5), 2524-2532 (1998-09-02)
We previously demonstrated the presence of advanced oxidation protein products (AOPP), a novel marker of oxidative stress in the plasma of uremic patients receiving maintenance dialysis. The present study in a cohort of 162 uremic patients showed that plasma concentrations
Alumina-supported potassium iodide as a heterogeneous catalyst for biodiesel production from soybean oil.
Xie W and Li H.
J. Mol. Catal. A: Chem., 255(1), 1-9 (2006)
H B Li et al.
Journal of chromatography. A, 918(2), 335-339 (2001-06-16)
A novel method for the determination of iodide by size exclusion chromatography was established. The method was simple and highly sensitive with good precision. Iodide was converted to iodine, then sequestered with starch, and separated from the matrix using a
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