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Merck

30315

Yoduro de potasio

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

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Fórmula lineal:
KI
Número CAS:
7681-11-0
Peso molecular:
166.00
NACRES:
NA.21
PubChem Substance ID:
329753460
UNSPSC Code:
12352302
EC Number:
231-659-4
MDL number:
MFCD00011405
Assay:
≥99.0%, 99.0-100.5% (calc. to the dried substance)
Form:
solid
Solubility:
water: complete (ca.1,430 g/l at 25 °C (77 °F))

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InChI key

NLKNQRATVPKPDG-UHFFFAOYSA-M

InChI

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

SMILES string

[K+].[I-]

agency

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

vapor pressure

1 mmHg ( 745 °C)

description

REDUCING SUBSTANCES complying

grade

puriss. p.a.

assay

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

form

solid

impurities

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

loss

≤0.5% loss on drying, 105 °C

pH

6.0-8.0 (20 °C, 5%)

mp

681 °C (lit.)

Quality Level

200

solubility

water: complete (ca.1,430 g/l at 25 °C (77 °F))

anion traces

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

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

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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.

pictograms

Health hazard
GHS08

signalword

Danger

hcodes

H372

Hazard Classifications

STOT RE 1 Oral

target_organs

Thyroid

Clase de almacenamiento

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

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificados de análisis (COA)

Lot/Batch Number
STBK6617
STBK6526
STBK5650
STBK5332
STBK5333

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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
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
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)
Pietro Santulli et al.
Human reproduction (Oxford, England), 30(1), 49-60 (2014-11-08)
Are protein oxidative stress markers [thiols, advanced oxidation protein products (AOPP), protein carbonyls and nitrates/nitrites] in perioperative peritoneal fluid higher in women with histologically proven endometriosis when compared with endometriosis-free controls? Protein oxidative stress markers are significantly increased in peritoneal
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