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Named after British painter William Payne (1760-1830), early formulas contained indigo, alizarin lake, and ivory black. Today more commonly a mixture of ultramarine blue and black, it is considered easier to control and less intense than black as a mixing color. (Series2)
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Pigment Classification: Mixture
Color Index Name: PB 29 / PBk 7
Color Index Number: 77007 / 77266
Chemical Description: Polysulfide of Sodium-Alumino-Silicate Nearly Pure Amorphous Carbon
Opacity/Transparency: Semi-Opaque
Lightfastness Rating: I
Permanency: Excellent
Munsell Notation Listing: Hue 4.0 PB Value 1.75 Chroma 0.6
Gloss Average: 29.3
Viscosity Range: 23000- 27000 CPS
CIE L*a*b* Values: L*24.12 a*0.05 b*-2.24
Tint Strength: 74.88
