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Sodhani Biotech Pvt. Ltd.

Apsara Yellow Extract

Apsara Yellow Extract

Regular price Rs. 267.00
Regular price Sale price Rs. 267.00
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Botanical Name - Rheum Emodi
Common name - Himalayan Rubharb
Other Name - Revanchini
Part Used -Roots
Uses - Textile Dyeing, Ayurdeva And Food Colours

Apsara yellow or an India Ruharb is a stout herb mainly found in the Himalayas, it is distributed from Kashmir to Sikkim. The stout roots are the chief source of golden yellow colour and mainly use as colorant in textile industry. The chief colouring component of Rheum emodi is chrysophonic acid. Colouration of silk and wool with Rheum emodi is  found to be effectively accomplished within a wide pH range of 4–8. Dye uptake, rate of dyeing and affinity of this colour are found to be higher for silk fibre than that for wool fibre.

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How to use

(A)Wet the fabric with wetting agent/soapnut(Reetha) or normal wash with water at 50 degree for 20 mins.

(B) Pre Mordant :-

Pre-treat the material with alum 6% of fabric weight at 85°C for 60 mins.

(C) Dyeing :-

Add the required amount of dye to the dye bath. PH of dye bath needs to be maintained at pH 5. If it is 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 95°C for 60-80 mins. We check all our natural dyes at 5% of fabric weight; you can amend the percentage as per lighter or darker shade required.

(D) Post Treatment :-

Conduct soaping of the dyed material with non-ionic detergent (0.5gpl) or ezee soap at 50°C for 30 mins.

(E)Then conduct cold wash of the material at 50°C for 20 mins or more time.

Natural Dyes Extract Discovery pack (50gms of each of all natural dyes extract powder)

This Pack includes 15 Different Natural Dyes Colours with Auxiliaries.

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Swatch Card - 35 Handmade organic cotton samples - Size 15 cm x 12 cm - Undyed/ Greige/ White

Variety of 35 swatches to help you understand the quality of fabrics.

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