Acid Blue 142 Usage And Synthesis

Preparation

4-Formylbenzene-1,3-disulfonic acid (1 Moore) and N,N-dibenzylbenzenamine (2 Moore) condensation, and oxidation.

Properties and Applications

green light blue. Red light blue powder. The strong sulfuric acid for yellow brown colloidal, diluted into lake green, accompanied by precipitation; In nitric acid for old yellow glue shape. Water solution is blue lake, add a little precipitation hydrochloric acid, sodium hydroxide slightly to become yellow, and the precipitation. Used for wool, silk and fabric dyeing and printing, also can be used for leather dyeing.

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