Quinacridone/Nickel Azo Gold Pigment Classification: GCO1G Chemical Description: Quinacridone/Nickel Complex Azo Opacity/Transparency: 6 Lightfastness Rating: I Permanency: Excellent Colour Index Name: PO48/PY150 Colour Index Number: 73900/73920/12764 Munsell Notation Listing: Hue: 2.2YR Value: 3.4 Chroma: 4 Pantone Matching System: 1685 Spectrophotometer Readings: N/A Viscosity Range: 14000-17000 CPS PH Range: 8.7-9.0 Gloss Average: 83 CIE L*a*b* Values: L*34.34 a*18.65 b*14.23 Tint Strength: 84.10