How to Exhaust Dye Cotton Using Orco Reactive I-Series™ Dyes

Prepare and prescour cotton goods. Goods should have good absorbency, wet-out, and contain no residual chlorine, peroxide, or alkali.
In a bath at 120°F(50°C) add:

1.0% Orconol CHSA Conc™ on weight of fabric(owf)

X g/L (oz/gal) Common salt* or Glauber’s salt as prescribed on chart shown below

0.067 oz/gal(0.5g/L) Sodium Hexametaphosphate

1.0% owf Orcotol MN Powder™(for closed machines such as jets)

X % owf I-Series™ reactive dye properly prepared.

X % owf Dye *oz/gal(g/L) Salt

to 0.50 5 (38)

0.51-1.00 7 (53)

1.01-2.00 9 (68)

2.01-4.00 12 (91)

4.01+ 13 (98)

Add prescribed amount of soda ash as shown in chart below. Soda ash may be added in portions to promote improved dye leveling.
Run for 10-20 minutes.
Add prescribed amount of Caustic 50% as shown in chart below. This will maximize yield of the dye.
Run for 30-40 minutes.

% owf dyes Soda Ash oz/gal(g/L) Caustic50% oz/gal(g/L)

10:1 20:1 10:1 20:1

to 0.75 0.8(6) 0.8(6) .20(1.5) .20(1.5)

0.75-2.00 0.8(6) 0.8(6) .20(1.5) .20(1.5)

2.01-4.00 1.1(8) 1.1(8) .27(2.0) .27(2.0)

4.01+ 1.1(8) 1.1(8) .27(2.0) .27(2.0)

After dyeing, overflow rinse until clear using cold water. Drop bath.
In a new bath at 100°F-120°F(38°C-50°C), neutralize with 1 g/L(0.133oz/gal) Acetic Acid 56%(or more if necessary for neutralization of residual alkali) for 15 minutes. Drop bath.
Soap at the boil using 0.25% owf Orcopon KP™ for 10-15 minutes.
Warm rinse at 140°F-175°F(60°C-80°C).
Cold rinse.

Note: Glauber’s Salt is recommended in jet-dyeing machines as common salt may cause pitting in machinery.