Bone Black

Pigment Classification: Natural Inorganic
Chemical Description: Amorphous Carbon produced by charring animal bones
Opacity/Transparency: 2
Lightfastness Rating: I
Permanency: Exc
Color Index Name: PBk 9
Color Index Number: 77267
Munsell Notation Listing:

Viscosity Range: 20000- 24000 CPS
Gloss Average: 32.62
CIE L*a*b* Values: L*24.58 a*-0.03 b*-0.46
Tint Strength: 78.87

reference: www.goldenpaints.com