How to Dye Wool Using Orcolan Neutral™ Dyes

Orcolan Neutral dyes are 2:1 premetallized acid dyes of excellent solubility, light, and wet fastness.  They are suitable for the dyeing of wool and nylon in stock, yarn, or piece form.

Due to the rapid rate of exhaustion, the use of a Leveler is suggested in order to not only retard the dye, but for the transference of color to promote shade uniformity.

As their name suggests, Orcolan Neutral™ dyes are best applied from a neutral or slightly alkaline medium.  The use of an ammonium salt of a weak or strong acid is therefore highly recommended in dyeing so that the bath will show a gradual change from a mildly alkaline pH to a slightly acid one.



Prescouring of the wool is necessary in order to remove any impurities in the goods otherwise an unlevel dyeing would result.

Run goods in bath containing 2.0% on weight of goods(owg) Orconol CHSA Conc™ at 140°-160°F for 20 minutes.


Dyeing – Strong Acid Bath

  • Enter goods in bath at 120°F containing:
    • 4.0% owg          Ammonium Sulfate
    • 5.0 % owg        Glauber’s Salt
    • 2.0% owg        Leveler
  • Run for 10-15 minutes.
  • Add X% owg            Orcolan Neutral™ dyes properly prepared
  • Bring slowly to the boil and circulate for 1 hour.
  • Add 1.0% of Acetic Acid 56% to promote exhaustion if necessary.
  • Cool, rinse, & dry.

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