CI #: NA
CI Name: PB29, PBk9
Pigment Name: Polysulfide of Sodium- Alumino-Silicate,Amorphous Carbon produced by charring animal bones
Lightfastness: ASTM I - Excellent
Actually the name says it all. Has beautiful subtle transparent blue undertones.
Williamsburg - Series 2 - Cold Black
Cold Black #6001732