Can copper sulphate, ferric chloride, and potassium permanganate be used as mordants?
Name: azkhan Message: I want to know whether copper sulphate, ferric chloride, and potassium permagnate can be used as mordants or not? If yes, then kindly provide some information about them. Can you compare natural and synthetic dyes? Potassium permanganate is not used as a mordant for hand dyeing. It is used industrially to discharge (bleach out) indigo denim, but it is not recommended for this use at home because it is very toxic. It is also a serious explosion hazard if you allow a solution of potassium permanganate to dry up. See this discussion on the Dye Forum for more information: “Discharge Indigo with Potassium Permanganate”. You may be thinking of a very different potassium compound which has, ill-advisedly, been used as a mordant with natural dyes. Potassium dichromate is a known human carcinogen. Chromium is commonly available in two forms, the trivalent form and the hexavalent form. Potassium dichromate is in the hexavalent form. Hexavalent chromium has been responsible
