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Additional heating, or firing of the natural earth pigment creates the darker variation of a classic Sienna earth color.
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Pigment Classification:åÊNatural Inorganic
Color Index Name:åÊPBr 7
Color Index Number:åÊ77491
Chemical Description:åÊCalcined Natural Iron Oxide
Opacity/Transparency:åÊSemi-opaque
Lightfastness Rating:åÊI
Permanency:åÊExcellent
Munsell Notation Listing:åÊHue 3.0 YR Value 3.25 Chroma 4
Gloss Average:åÊ9.5
Viscosity Range:åÊ4000-15000 CPS
CIE L*a*b* Values:åÊL*33.67 a*16.86 b*12.58
Tint Strength:åÊ83.9
