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Potassium, chunks, in mineral oil, 98%
CAS: 7440-09-7 | K | 39.10 g/mol
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Catalog number L13267.22
also known as L13267-22
Price (USD)/ Each
315.65
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350.00Save 34.35 (10%)
Quantity:
100 g
Price (USD)/ Each
315.65
Online Exclusive
350.00Save 34.35 (10%)
Chemical Identifiers
CAS7440-09-7
IUPAC Namepotassium
Molecular FormulaK
InChI KeyZLMJMSJWJFRBEC-UHFFFAOYSA-N
SMILES[K]
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Specifications
Specification Sheet
Specification SheetImpurity contentSodium Na ≤ 2%
FormPieces/chunks of upto ca. 12g
Impurity contentLead Pb ≤ 20ppm
Appearance (Color)Silver/grey or white to pale yellow
Assay (unspecified)≥97.5%
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Potassium forms a blue solution in tetrahydrofoliate which is used for the ? -monoalkylation of -lactones in the presence of 18-crown-6. It is used for generation of potassium ethoxide in solution, for use in the Birch reduction of an aromatic ring, for preparation of potassium amide,
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.
Applications
Potassium forms a blue solution in tetrahydrofoliate which is used for the ɑ -monoalkylation of -lactones in the presence of 18-crown-6. It is used for generation of potassium ethoxide in solution, for use in the Birch reduction of an aromatic ring, for preparation of potassium amide,
Solubility
Reacts with water.
Notes
Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Handle and store under inert gas. Incompatible with strong oxidizing agents.
Potassium forms a blue solution in tetrahydrofoliate which is used for the ɑ -monoalkylation of -lactones in the presence of 18-crown-6. It is used for generation of potassium ethoxide in solution, for use in the Birch reduction of an aromatic ring, for preparation of potassium amide,
Solubility
Reacts with water.
Notes
Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Handle and store under inert gas. Incompatible with strong oxidizing agents.
RUO – Research Use Only
General References:
- Georgios Sakellariou.; Apostolos Avgeropoulos.; Nikos Hadjichristidis.; Jimmy W. Maysa.; Durairaj Baskarana. Functionalized organic nanoparticles from core-crosslinked poly(4-vinylbenzocyclobutene-b-butadiene) diblock copolymer micelles. Polymer. 2009, 50 (26), 6202-6211.
- Colloidal potassium can be obtained by sonication in toluene or xylene under argon at 10° : Tetrahedron Lett., 25, 753 (1984).
- In the presence of 18-crown-6, potassium forms a blue solution in THF, which has been used, e.g. for the ɑ -monoalkylation of -lactones: J. Org. Chem., 52, 4601 (1987); the cleavage of ß -lactones: J. Chem. Soc., Chem. Commun., 1261 (1988); and of aryl ethers and esters: J. Org. Chem., 53, 5230 (1988).
- For generation of potassium ethoxide in solution, see: Org. Synth. Coll ., 7, 149 (1990).
- For use in the Birch reduction of an aromatic ring, see: Org. Synth. Coll., 9, 698 (1998); reviews of the Birch reduction: Tetrahedron, 45, 1579 (1989); Org. React., 42, 1 (1992).
- For preparation of potassium amide, see: Org. Synth. Coll., 8, 173 (1993).