<%@ Language=JavaScript %> How to dye Leather using MX Dyes

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

Dyeing Chrome-Tanned Leather  
using PRO MX Reactive Dyes

Please read directions carefully before starting.

Supplies
PRO MX Dye Powder
PRO Dye Activator or Soda Ash
Synthrapol SP
common salt
56% Acetic Acid or 5% white distilled vinegar
clear household ammonia

Procedure
1. Wet out 1 pound (450 gm) of leather for 60 minutes, in the following solution:

1 1/4 gallons (5 liters) of water at 120oF(49oC)
2 tsp (10 ml) Synthrapol
3/4 cup (188 ml) clear household ammonia

2. Agitate the leather frequently. Then rinse well in warm water.

3. Prepare dye bath using:

1 1/4 gallons (5 liters) water 120oF(49oC)
up to 8% OWG PRO MX Reactive Dye
8% by volume of common salt (10 oz salt per gallon (4 liters) water)

4. Work leather for 30 minutes maintaining temperature of 120oF(49oC) and add:

PRO Dye Activator or Soda Ash (equal to 25% of the weight of the dye)

5. Work leather for an additional 60 minutes at 120oF(49oC). Drain dye bath and rinse well in warm water. If color is not deep enough, re-dye using 1/2 the amount of dye used the first time. This will result in a darker shade than using the total amount of dye in the first bath.

6. After thoroughly rinsing the leather, acidify it using:

1 gallon (4 liters) room temperature water
3 oz (86 ml) Acetic Acid 56% (or 1 quart (1 liter) of 5% vinegar)

7. Rinse in warm water, extract and air dry.

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