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Potassium iodide

ACS reagent, ≥99.0%

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About This Item

Linear Formula:
KI
CAS Number:
7681-11-0
Molecular Weight:
166.00
NACRES:
NA.21
PubChem Substance ID:
329752287
UNSPSC Code:
12352302
EC Number:
231-659-4
MDL number:
MFCD00011405
Assay:
≥99.0%
Grade:
ACS reagent
Form:
crystals
Solubility:
water: complete (ca.1,430 g/l at 25 °C (77 °F))
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grade

ACS reagent

Quality Level

200

vapor pressure

1 mmHg ( 745 °C)

assay

≥99.0%

form

crystals

impurities

≤0.001% N compounds, ≤0.005% insolubles

loss

≤0.2% loss on drying

pH

6.0-9.2 (25 °C, 5%)

mp

681 °C (lit.)

solubility

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

anion traces

chloride, bromide (as Cl)-: ≤0.01%, iodate (IO3-): ≤3 ppm, phosphate (PO43-): ≤0.001%, sulfate (SO42-): ≤0.005%

cation traces

Ba: ≤0.002%, Ca: ≤0.002%, Fe: ≤3 ppm, Mg: ≤0.001%, Na: ≤0.005%, heavy metals (as Pb): ≤5 ppm

SMILES string

[K+].[I-]

InChI

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

InChI key

NLKNQRATVPKPDG-UHFFFAOYSA-M

General description

Potassium iodide is a water soluble inorganic salt that can be prepared by reacting hydrogen iodide and potassium bicarbonate.

Application

Potassium iodide may be used as a catalyst in the following processes: Conversion of aromatic primary amines to the corresponding nitro compounds in the presence of tert-butyl hydroperoxide as oxidant. Conversion of aryl halide to aryl iodides in the presence of nickel catalysts. Preparation of sulfonated oxindoles from activated alkenes and sulfonylhydrazides in water and in the presence of 8-crown-6 and tert-butyl hydroperoxide.

Other Notes

Go to Redi-Dri™ Product Listing 746428

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

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pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Danger

flash_point_f

Not applicable

flash_point_c

Not applicable

Hazard Classifications

Eye Irrit. 2 - Repr. 1B - STOT RE 2 Oral

target_organs

Thyroid,Liver

Storage Class

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

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Certificates of Analysis (COA)

Lot/Batch Number
MKCX5942
MKCX7301
MKCX5943
MKCX5262
MKCX5258

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Selective Oxidation of Aromatic Amines to Nitro Derivatives using Potassium Iodide-tert-Butyl Hydroperoxide Catalytic System
Reddy KR, et al
Advanced Synthesis & Catalysis, 351(1-2), 93-96 (2009)
Synthesis of Aryl Iodides from Aryl Halides and Potassium Iodide by Means of Nickel Catalyst
Takagi K, et al
Chemistry Letters (Jpn), 7(2), 191-192 (1978)
Synthesis of sulfonated oxindoles by potassium iodide catalyzed arylsulfonylation of activated alkenes with sulfonylhydrazides in water.
<BIG>Li X, et al. </BIG>
The Journal of Organic Chemistry, 78(14), 7343-7348 (2013)
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