Yellow Ochre Pigment Classification: Natural Inorganic Chemical Description: Natural Hydrated Iron Oxide Opacity/Transparency: 2 Lightfastness Rating: I Permanency: Exc Color Index Name: PY 43 Color Index Number: 77492 Munsell Notation Listing: Hue 9,5 YR Value 5 Chroma 8.8 Viscosity Range: 20000- 24000 CPS Gloss Average: 62.36 CIE L*a*b* Values: L*57.53 a*16.17 b*37.79 Tint Strength: 91.1