244864

Potassium

chunks (in mineral oil), 98% trace metals basis

• Empirical Formula (Hill Notation): K
• CAS Number: 7440-09-7
• Molecular Weight: 39.10
• MDL number: MFCD00133776
• PubChem Substance ID: 24854713
• NACRES: NA.22

Properties

• vapor pressure: 0.09 mmHg ( 260 °C)
• Quality Level: 200
• Assay: 98% trace metals basis
• form: chunks (in mineral oil)
• reaction suitability: reagent type: reductant
• resistivity: 6.1 μΩ-cm, 20°C
• bp: 760 °C (lit.)
• mp: 64 °C (lit.)
• density: 0.86 g/mL at 25 °C (lit.)
• SMILES string: [K]
• InChI: 1S/K
• InChI key: ZLMJMSJWJFRBEC-UHFFFAOYSA-N

Description

Application

Combines under pressure with silver metal to form 2 new compounds: K₂Ag and K₃Ag.†

Potassium can be used in the synthesis of potassium containing solid-state chalcogenides with promising thermoelectric properties. It may also be used in the dehalogenation of 1,3-di-tert-butyl-2,2-dichloro-1,3-diaza-2-sila-4-cyclopentene to form 1,3-di-tert-butyl-2,3-dihydro-1H-1,3,2-diazasilol-2-ylidene.

Safety Information

• Pictograms: GHS02,GHS05
• Signal Word: Danger
• Hazard Statements: H260 - H314
• Precautionary Statements: P223 - P231 + P232 - P260 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Skin Corr. 1B - Water-react 1
• Supplementary Hazards: EUH014
• Storage Class Code: 4.3 - Hazardous materials, which set free flammable gases upon contact with water
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves