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Table 2 Color characteristics and color fastness properties of wool dyed with R. cordifolia and (pre-, meta-, and post-) mordanted with 3 % o.w.f. A. catechu

From: Eco-dyeing of wool with Rubia cordifolia root extract: Assessment of the effect of Acacia catechu as biomordant on color and fastness properties

Mordant L* a* b* c* ho K/S Light fastness Wash fastness Rub fastness
c.c. c.s. c.w. Dry Wet
Nil 48.1 40.0 36.2 53.9 42.1 11.02 4/5 3/4 4/5 4/5 4/5 3/4
Pre-mordanted 34.0 32.2 17.1 36.4 27.9 17.36 5 5 5 5 5 4/5
Meta-mordanted 35.2 31.6 16.1 35.5 26.9 14.33 5 4/5 5 5 5 4
Post-mordanted 34.8 31.9 16.8 36.0 27.7 16.81 5 4/5 5 5 5 4
  1. c.c. color change, c.s. color staining on cotton, c.w. color staining on wool