<%@ Language=JavaScript %> Directions-Bleaching Wool


PO Box 14 • Somerset, MA 02726
orders 1-800-2-BUY-DYE
technical support 508-676-3838
fax 508-676-3980
e-mail • promail@prochemical.com
www.prochemical.com
Bleaching Wool using Hydrogen Peroxide
Please read the directions carefully before starting.
Hydrogen peroxide is the preferred bleaching agent for white wool and the safer bleaching agent for cotton. Sodium hypochlorite (Chlorox) is sometimes used on cotton but never on wool or silk. Hypochlorite can damage cotton and will destroy wool and silk. Therefore we offer this simple method of bleaching with Hydrogen Peroxide. Always do test samples before working on a large project. For additional information, visit our website at www.prochemical.com.

Supplies
35% Hydrogen peroxide OR 10% strength (hair bleaching) peroxide OR 3% hydrogen peroxide (first aid type)
Synthrapol
PRO Dye Activator or Soda Ash
Acetic Acid 56%OR white distilled vinegar 5%

Procedure for 1 Pound (454 gm) of wool fabric or yarn:
1. Scour the fabric by machine washing in HOT 140oF (60oC) water, or by hand in a pot on the stove, with tsp (2 gm) PRO Dye Activator or Soda Ash and tsp (2.5 ml) Synthrapol per pound of fabric (454 gm, or 3 to 4 yards muslin weight fabric). Rinse thoroughly.

2. Make the bleaching solution below, in a stainless steel or unchipped enamel pot.

To 4 quarts (4 liters) of cool water add:

Should it be impossible to obtain the 35% strength of peroxide, try the following:

To 2 quarts (2 liters) of cool water add:

3. Heat the bath to 130oF (55oC) and turn off the heat.

4. Add the pre-washed fabric or yarn. Stir to ensure thorough saturation. Place a small plate or dish on fabric and add weights to make sure fabric remains below the surface of the bleaching solution. Water-filled glass jars with covers make excellent weights.

5. Allow to bleach for 16 to 24 hours in a room no cooler than 70oF (21oC); then pour off the liquid and rinse fabric well in warm water.

6. Neutralize the wool in a solution containing 1 Tbl (15 ml) of Acetic Acid 56% or 11 Tbl (165 ml) household white vinegar 5% per gallon (4 liters) of warm water for 10 minutes.

7. Rinse well and dry or squeeze out excess liquid and enter fabric into dye bath.

Copyright 2002