Additional heating, or firing of the natural earth pigment creates the darker variation of a classic Sienna earth color. (Series 1)
Pigment Classification: Natural Inorganic
Color Index Name: PBr7
Color Index Number: 77491
Chemical Description: Calcined Natural Iron Oxide
Opacity/Transparency: Opaque
Lightfastness Rating: 1
Permanency: Excellent
Munsell Notation Listing: Hue 3.0 Y Value 3.2 Chroma 4
Gloss Average: 13.63
Viscosity Range: 20000- 23000 CPS
Tint Strength: 80.56