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Table 1 CIE-L*a*b* values and fastness properties of un-mordanted dyed wool samples

From: Application of Terminalia chebula natural dye on wool fiber—evaluation of color and fastness properties

  Wash fastness Rub fastness Light fastness
Dye % Medium (pH) L* a* b* c* h° K/S c.c. Dry Wet
15 Neutral 47.6 4.8 17.8 18.4 74.8 8.33 3 4/5 4/5 5
  Acidic 49.9 5.5 18.6 19.4 73.5 6.95 4 4/5 3/4 5
  Alkaline 43.4 6.4 19.4 20.4 71.9 15.27 5 4/5 4/5 5
8 Neutral 48.1 4.1 16.1 16.6 75.8 5.23 5 4/5 4/5 5
  Acidic 51.4 5.9 18.6 19.5 72.4 5.71 4 4/5 4/5 5
  Alkaline 49.5 5.6 19.6 20.4 73.9 7.42 2 4/5 4/5 5
3 Neutral 55.4 4.4 17.9 18.4 76.3 3.56 4 4/5 4/5 5
  Acidic 57.0 4.4 18.6 19.2 76.6 3.80 4 4/5 4/5 5
  Alkaline 56.4 4.3 18.5 19.0 76.8 3.39 3 4/5 4/5 5
1 Neutral 57.1 3.9 15.9 16.4 76.2 2.48 4/5 4/5 4/5 5
  Acidic 62.0 4.7 19.7 20.2 76.6 2.56 3 4/5 4/5 5
  Alkaline 59.7 3.6 16.5 16.9 77.6 2.24 3/4 4/5 4/5 5
0.5 Neutral 60.8 2.8 15.3 15.6 79.6 1.94 4 4/5 4/5 5
  Acidic 65.9 4.2 19.9 20.3 78.1 1.99 3/4 4/5 4/5 5
  Alkaline 63.4 2.8 15.4 15.7 79.6 1.59 4/5 4/5 4/5 5
  1. Abbreviations: c.c. color change
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