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Potassium iodide, 99.99% (metals basis)

Product Code. 11374999
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Product Code. 11374999 Supplier Thermo Scientific Alfa Aesar Supplier No. 087627.22
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Estimated Shipment: 04-12-2026
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Description

CAS: 7681-11-0 | IK | 166.003 g/mol

Potassium iodide is a simple iodide salt utilized as a fluorescence quenching agent which acts by collisional quenching of fluorescent substances by the iodide ion. It is also used in the isolation of single stranded DNA.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

TRUSTED_SUSTAINABILITY

Chemical Identifiers

CAS 7681-11-0
Molecular Formula IK
Molecular Weight (g/mol) 166.003
MDL Number MFCD00011405
InChI Key NLKNQRATVPKPDG-UHFFFAOYSA-M
Synonym potassium iodide, potassium iodide ki, pima, kali iodide, thyro-block, knollide, kisol, asmofug e, potassium diiodide, potassium monoiodide
PubChem CID 4875
ChEBI CHEBI:8346
IUPAC Name potassium;iodide
SMILES [K+].[I-]

Specifications

Boiling Point 1330°C
Melting Point 681°C
Color White
Physical Form Powder
Quantity 100 g
Odor Odorless
Refractive Index 1.677
Sensitivity Hygroscopic
Vapor Pressure 1mm Hg at 745°C
Assay Percent Range 99.99% (metals basis)
Density 3.12
Solubility Information Soluble in water (145g/100ml at 25°C),alcohol (45.5mg/ml),methanol (125mg/ml),acetone (13.1mg/ml at 25°C),and ethanol (19.6mg/ml).
Formula Weight 166.01
Chemical Name or Material Potassium iodide
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