Tannin is the main component. Study on adsorption of dyes and dyeing on cotton yarn when without mordants mordants and metal more Dan end use is aluminum sulfate,. Stannous chloride, copper sulfate,And ferrous sulfate, it was found that the proper way to use as a background color is staining after using aluminum sulfate, concentration 0.25-0.5%w / V as a mordant, and study to develop the dyeing process of wood Fang with multiple staining. Using the shell Du is a background color. Study of dyeing process using different more Dan said,How to streamline and staining. It was found that the use of aluminum sulfate as a mordant makes the color of Fang clear up. And when more salt into water dye to make dyes have darker. In repeated staining makes the color darker.
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