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No abstract

1,4‐Dioxan, Tetrahydrofuran and Dimethoxyethan were dried over potassium and subsequently degassed, under high vacuum conditions. The u. v. spectra and the electric conductivities of the high purity ethers were measured. The solvents could be stored under high vacuum conditions for an unlimited period of time, without any changes of their physico‐chemical properties. Treatment with potassium under high vacuum conditions caused a partial cleavage of the high purity ethers resulting in increased electric conductance and absorption of light.

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Es werden die molaren Dissoziationswärmen der Titelverbindungen in 1,4‐ Dioxan bestimmt.