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221945

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 Segment

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

221945-500G:4.548173986746E12 + 221945-2.5KG:4.548173986739E12 + 221945-5G:4.548173986753E12 + 221945-100G:4.548173986722E12

jan

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