Potassium (K)
Discovered in 1807, potassium is the seventh most abundant metal. Potassium is not found free in nature, and most minerals that contain it are insoluble, making it difficult to obtain.
The most reactive and electropositive metal, it is the lightest after lithium. Potassium is soft and silvery, can be cut with a knife, rapidly oxidizes in air, and must be stored in a mineral oil such as kerosene. It decomposes in water to produce hydrogen and ignites spontaneously in air. Potassium has 17 isotopes, including one radioactive form.
The greatest demand for potassium is for fertilizers because it is essential for plant growth. Many potassium salts, including the hydroxide, nitrate, carbonate, chloride, chlorate, bromide, iodide, cyanide, sulfate, chromate, and dichromate forms, are also important.
Potassium, 98%, chunks, in mineral oil
CAS: 9-7-7440 Molecular Formula: K Molecular Weight (g/mol): 39.10 MDL Number: MFCD00133776 InChI Key: ZLMJMSJWJFRBEC-UHFFFAOYSA-N Synonym: kalium,potassium, metal,potassium, liquid alloy,unii-rwp5ga015d,rwp5ga015d,hsdb 698,monopotassium,potasio,mono-potassium,atom PubChem CID: 5462222 ChEBI: CHEBI:26216 IUPAC Name: potassium SMILES: [K]
Potassium, solid, 99% (metals basis)
CAS: 9-7-7440 Molecular Formula: K Molecular Weight (g/mol): 39.10 MDL Number: MFCD00133776 InChI Key: ZLMJMSJWJFRBEC-UHFFFAOYSA-N Synonym: kalium,potassium, metal,potassium, liquid alloy,unii-rwp5ga015d,rwp5ga015d,hsdb 698,monopotassium,potasio,mono-potassium,atom PubChem CID: 5462222 ChEBI: CHEBI:26216 IUPAC Name: potassium SMILES: [K]
Potassium, solid, 99% (metals basis)
CAS: 9-7-7440 Molecular Formula: K Molecular Weight (g/mol): 39.10 MDL Number: MFCD00133776 InChI Key: ZLMJMSJWJFRBEC-UHFFFAOYSA-N Synonym: kalium,potassium, metal,potassium, liquid alloy,unii-rwp5ga015d,rwp5ga015d,hsdb 698,monopotassium,potasio,mono-potassium,atom PubChem CID: 5462222 ChEBI: CHEBI:26216 IUPAC Name: potassium SMILES: [K]
Potassium, chunks, in mineral oil, 98%
CAS: 9-7-7440 Molecular Formula: K Molecular Weight (g/mol): 39.10 MDL Number: MFCD00133776 InChI Key: ZLMJMSJWJFRBEC-UHFFFAOYSA-N Synonym: kalium,potassium, metal,potassium, liquid alloy,unii-rwp5ga015d,rwp5ga015d,hsdb 698,monopotassium,potasio,mono-potassium,atom PubChem CID: 5462222 ChEBI: CHEBI:26216 IUPAC Name: potassium SMILES: [K]
Thermo Scientific™ Potassium hydride, 30% w/w in mineral oil
CAS: 7693-26-7 Molecular Formula: HK Molecular Weight (g/mol): 40.11 MDL Number: MFCD00011357 InChI Key: OCFVSFVLVRNXFJ-UHFFFAOYSA-N IUPAC Name: potassium hydride SMILES: [H-].[K+]
Sigma Aldrich Potassium
MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.
Sigma Aldrich Sodium
MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.
Sigma Aldrich Potassium
MilliporeSigma Sigma Organics products encompass a wide range of quality reagents, solvents, catalysts, and building blocks for organic synthesis. From benchtop discovery to process development and scale-up, Sigma Organics solutions are built to meet the needs of synthetic chemists.
eMolecules Ambeed / Potassium trifluoro(2-(methylsulfonyl)phenyl)borate / 1g / 600827062 / A106745 / / 850623-65-3 / MFCD04115760 / 262.090 / C7H7BF3KO2S
Ambeed / Potassium trifluoro(2-(methylsulfonyl)phenyl)borate / 1g / 600827062 / A106745 / / 850623-65-3 / MFCD04115760 / 262.090 / C7H7BF3KO2S
Sigma Aldrich Fine Chemicals Biosciences High Pure RNA Paraffin Kit
Low to medium throughput RNA isolation from FFPE sample materials.
Medchemexpress LLC Dimethyl silicone oil | 63148-62-9 | [Si(CH3)2O]n | 50 ML
Dimethyl silicone oil is a polydimethylsiloxane fluid with a kinematic viscosity of 100 cSt at 25 °C. It is a colorless to light-yellow, chemically inert oil used in laboratory applications as a reagent, viscosity standard, lubricant, and formulation component.
- Provides consistent 100 cSt viscosity at 25 °C
- Chemically inert and low volatility for stable performance
- Good thermal and oxidative stability across common lab temperatures
- Hydrophobic and lubricating properties suitable for coatings and seals
- Clear liquid with typical density ~0.96 g/cm³ for formulation use
- Available in small-volume packaging suitable for research labs
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