16872-93-8

Basic information

• Product Name: Potassium n-propoxide, in n-propanol
• Synonyms: Potassium n-propoxide, in n-propanol;Potassium propoxide;POTASSIUM n-PROPOXIDE, 18-20% in n-propanol
• CAS NO: 16872-93-8
• Molecular Formula: C₃H₇O*K
• Molecular Weight: 0
• Mol File: 16872-93-8.mol
• Article Data: 3

Chemical Properties

• Flash Point: 22°C (72°F)
• Appearance: /
• CAS DataBase Reference: Potassium n-propoxide, in n-propanol(CAS DataBase Reference)
• NIST Chemistry Reference: Potassium n-propoxide, in n-propanol(16872-93-8)
• EPA Substance Registry System: Potassium n-propoxide, in n-propanol(16872-93-8)

Safety Data

• Hazardous Substances Data: 16872-93-8(Hazardous Substances Data)

Upstream product

• 71-23-8 propan-1-ol 
• 503-30-0 trimethylene oxide 

Downstream Products

• 2315-68-6 propyl benzoate 
• 111-43-3 Dipropyl ether 
• 40103-93-3 potassium O-propyl thiocarbonate 
• 71-23-8 propan-1-ol 
• 187737-37-7 propene 
• 75-19-4 cyclopropane 

Relevant articles and documents

Decomposition of the crown ether ring in the reaction of K-, K+(15-crown-5)2 with oxetane

A cleavage of both oxacyclic rings occurs in the reaction of K-, K+(15-crown-5)2 with oxetane in tetrahydrofuran solution. Oxetane ring opening leads to the formation of organometallic compounds, which react with the crown molecule. Potassium methoxide, potassium n-propoxide as well as potassium tetra(ethylene glycoxide) vinyl ether are the main reaction products. It means that crown ether can act both as an activator and as a reagent under studied conditions.

Concerning the Products of the Reaction of Methyl Bromide and Ethyl Bromide with Potassium Hydroxide in Aqueous Methanolic Solutions and the Progress of this SN2-Reaction

Investigations of the reaction of methyl bromide and ethyl bromide with potassium hydroxide in methanolic and aqueous methanolic solutions show that the main products of these reactions are dimethyl ether and ethylmethyl ether. The reaction rates measured in methanolic or aqueous methanolic solutions are the same whether potassium hydroxide or potassium methoxide are used. These results are caused by an equilibrium between hydroxide and methoxide ions with which we could establish the equilibrium constant near 0.6. This means that a solution of sodium hydroxide c=0.1 moll-1 in methanol contains roughly 99.8% of methoxide ions. The reaction rates in methanolic as well as in aqueous methanolic solutions are strict second order. The reaction rate measured at several temperatures permitted the calculation of EA≠, ΔH≠, ΔS≠ and ΔG≠. Furthermore the kinetic investigations show that the nucleophilicity of methoxide ions is lower compared to hydroxide ions. The calculation of the Swain-Scott-parameter n results in a nucleophilicity scale in order to methoxide, hydroxide, ethoxide ions. The kinetic investigations of the reaction of ethyl bromide with methoxide and hydroxide ions in methanolic solutions demonstrate that at high temperatures the rate constant of methoxide ions is higher than that of hydroxide ions. The opposite case can be observed at lower temperatures. At the temperature of 20°C the rate constants of both reactions are equal. This is to do with the isokinetic effect which one is rarely able to observe at room temperatures.