NUT SILVER

Botanical Name:

Onosma Hispidum

Common name:

Purging Nut

Other Name:

Physic Nut, Barbados Nut

Part Used:

Trees Bark & Wood

Uses:

Textile dyeing

Product Descriptions:

This plant is found in North western Himalayas at an altitude of more than 2300 meters.
The roots of this plant are the main source of silver gray colors.
A combination of mordants such as alum, copper sulfate, ferrous sulfate in the required ratio will give it better colourfastness characteristics.

Dyeing Process:

(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 7. If it’s higher than pH 7 add vinegar, if below pH 7, 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.

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