Sappan Wood or East Indian redwood is a natural dye yielding medicinal plant. Sappan wood is one of the most widely used plant dye; in ancient times it plays a predominant role in red colour for dyeing textiles. By manipulating the pH of the dye bath by the addition of wood ash water or vinegar, the dye produces everything from pink to red colour. By combining different organic mordents like chrome alum, ferrous alum with dye it displays good fastness towards washing. The dye is seen to have anti-inflammatory activity.
(A) Pre Mordant 1 :- Pre-treat the material with alum 10% of fabric weight at 80°C for 60 mins.
(B) Dyeing :- Add the required amount of dye to the dye bath. pH of dye bath needs to be maintained at pH 5. If it's higher than pH 5 add vinegar, if below pH 5, use lime or soda ash. Stir well to dissolve the dye. Add fabric to the dye bath and maintain at 90°C for 60-80 mins. We check all our natural dyes at 30% of fabric weight, you can amend the percentage as per lighter or darker shade required.
(C) Post Treatment :- Conduct soaping of the dyed material with non-ionic detergent (0.5gpl) at 50°C for 35 mins.
(D) Hot wash and then cold wash the material.
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