Natural Iron-Oxide is the basis for this single-pigment color, named after the region in Italy where it was first mined. Raw Sienna retains more of its yellowish color because is created prior to the heating process that creates "burnt" sienna.

Pigment Classification: Inorganic

Color Index Name: PY 43

Color Index Number: 77492

Chemical Description: Natural Hydrated Iron Oxide

Opacity/Transparency: Semi-Transparent

Lightfastness Rating: I

Permanency: Excellent

Munsell Notation Listing: Hue 9.0 YR Value 4.5 Chroma 6.6

Gloss Average: 27.98

Viscosity Range: 750-1000 CPS

CIE L*a*b* Values: L*88.09 a*4.82 b*12.73

Tint Strength: 88.08