Napthol Vermillion 4oz

Napthol Vermillion Pigment Dispersion
Pigment Class: Monoazo
Color Index Number: PR112
Opacity: M
Tinting Strength: 4
Alkali Resistance: 5
Blue Wool Scale (Lightfastness): F:7-8 M:6-7 L:5
Weatherfastness: F:Yes M:No L:No

Key:
Opacity: H=High, M=Medium, L=Low, T=Transparent, VT=Very Transparent
Tinting Strength: 1=Poor, 2=Fair, 3=Good, 4=Very Good, 5=Excellent
Alkali Resistance: 1=Poor, 2=Fair, 3=Good, 4=Very Good, 5=Excellent (Alkali Resistant does not mean “lime safe”)
Blue Wool Scale (Industrial system to measure lightfastness): F=Full Tone, M=Medium Tone, L=Light Tone. 1=Poor, 2=Fair, 3=Good, 4=Very Good, 5=Excellent
Weatherfastness: F=Full Tone, M=Medium Tone, L=Light Tone. “No” indicates pigments the should not be used outdoors.