The invention concerns a chromium-containing azo dyestufif which contains a mono and a disazo dyestuff bonded co-ordinatively to a hexavalent chromium atom.
Chromium containing azo dyes of the general formula (1): ##STR1## wherein one of the phenyl nuclei A, B, D and E is substituted by sulfonic acid group, ...
由 NH Elsayed 著作 · 2022 · 被引用 17 次 — The main aim of this work is the preparation of azo dye modified chitosan that was subsequently used in the ion-imprinting of Cr(III) ions ...