Carbon Black Pigment Classification: Inorganic Chemical Description: Nearly Pure Amorphous Carbon Opacity/Transparency: 1 Lightfastness Rating: I Permanency: Exc Color Index Name: PBk 7 Color Index Number: 77266 Munsell Notation Listing: Hue Black Value 1 Chroma 0.3 Viscosity Range: 400-1000 CPS Gloss Average: 79.23 CIE L*a*b* Values: L*25.77 a*0.2 b*-0.17 Tint Strength: 56.55