1. Prepare cotton goods so they have good absorbency, wet-out, and contain no residual chlorine, peroxide, or alkali.

2. 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

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

% owf dyes                          oz/gal(g/L)

to 0.75                                   2.7-6.6 (20-50)

0.75-2.00                              10        (75)

2.01-4.00                              13.3     (100)

4.01+                                     13.3     (100)

3. Run for ten minutes.
4. Bring dyebath to 140°F(60°C) at a rate of 1-3°F/minute.
5. Add prescribed amount of soda ash as shown in chart below.  Soda ash may be added in portions to promote improved leveling.  Run for 10-20
6. 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)                        Caustic 50% oz/gal(g/L)

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

to 0.75                                                   0.67(5)    0.67(5)                                   —                     —

0.75-2.00                                              0.67(5)       0.67(5)                               .13(1.0)    .07(0.5)

2.01-4.00                                              0.67(5)    0.67(5)                                 .27(2.0)    .13(1.0)

4.01+                                                     0.67(5)       0.67(5)                               .40(3.0)    .20(1.5)

 

7. After dyeing, overflow rinse until clear using cold water. Drop bath.
8. In 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.
9. Soap at boil using 0.25% owf Orconol CHSA Conc™ for 10-15 minutes.
10. Warm rinse at 140°-175°F(60°-80°C). Cold rinse.

 

*  For shades using Orco Reactive Blue RW Special™ use Glauber’s salt in place of common salt  and use ½ the amount. Glauber’s Salt is recommended in jet-dyeing machines as common salt may cause pitting in machinery.

**  For shades using Orco Reactive Turquoise RP™, raise dyebath temperature to 165°F(75°C).

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