Diarylide Yellow Pigment Classification: Organic Chemical Description: Diarylide Yellow HR-70 Opacity/Transparency: 5 Lightfastness Rating: I Permanency: Exc Color Index Name: PY 83 Color Index Number: 21108 Munsell Notation Listing: Hue 8.0 YR Value 7 Chroma 15.8 Viscosity Range: 400-1000 CPS Gloss Average: 85.52 CIE L*a*b* Values: L*75.48 a*33.38 b*80.36 Tint Strength: 88.16