Transparent Earth Orange: A truly transparent version of Burnt Sienna. The best of the Old Masters' paints were semi-transparent colors; these new hydrated Mars colors give painters more clarity in transparency and higher tinting strength. Excellent for glazing.

Pigment: Transparent Mars Yellow, Transparent Mars Red (PY 42, PR 101)
Vehicle: Alkali refined linseed oil
Lightfastness I, Series 3, TRANSPARENT

reference: www.gamblincolors.com