Seeking acid red dyes or pigments

2016-12-13View Original

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I am developing an ink that fades rapidly in a weakly alkaline environment; I’m seeking help from experts! :)

Reply #22016-12-18

Hello. If the amount needed is small, it can be purchased directly from the market. Manufacturers use large packaging.

Reply #32016-12-21

Congo red, which develops color under acidic conditions

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Seeking acid red dyes or pigments

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