Examination of the Conditions of Extraction of Toxic Organic Bases and of Methods of Their Determination. III. Extraction of Ion-Associates of Dibenz[b,f]-1,4-oxazepin
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Published:1994
Issue:3
Volume:59
Page:582-588
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ISSN:0010-0765
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Container-title:Collection of Czechoslovak Chemical Communications
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language:en
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Short-container-title:Collect. Czech. Chem. Commun.
Author:
Souček Jan,Belický Ladislav,Havel Josef
Abstract
The protonation and distribution constants of dibenz[b, f]-1,4-oxazepin (CR) were measured. This substance forms stable ion-associates with Acid Red 88, extractable into chloroform. Reextraction with an aqueous phase containing basic fuchsine or safranine T brings about exchange of the CR cation for the basic dye cation. The associates so formed exhibit higher conditional extraction constants and higher molar absorptivities than the initial associates.
Publisher
Institute of Organic Chemistry & Biochemistry
Subject
General Chemistry