201 Acid orange II colorant CAS 633-96-5, also called acid orange 7 C.I. 15510, is a kind of orange apperance acid orange dyes. It is red light yellow when dissolved in water, orange when dissolved in ethanol, magenta when dissolved in concentrated sulfuric acid, and then diluted to form brownish yellow precipitate.

201 Acid orange II colorant application

1.Wool yarn
2.Leather
3.Silk
4.Nylo
5.Paper

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