Nitroso Green. Fortunately many of the worst colors have been weeded out of artist paints over the past couple of decades, however among paints that still circulate sometimes (of the ASTM III variety), this color has the unfortunate honor of being one of the lowest performing modern colors for lightfastness in tints. It has a perilously low blue wool rating of 2, depending on the manufacturer.
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Nitroso Green
PG8
Alternate Name
Pigment Green B
Pigment Description
Resources
PG8 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com
Information about PG8 from Bruce MacEvoy, Handprint Guide to Watercolors, General information about this class of pigments from Handprint,
Stats
Lightfastness
Poor
Not lightfast enough for us, as it is the low end of moderate to poor. May fall to BWS 3.
Transparency
Semi-Transparent
Toxicity
Hazard, Use more caution
Treat all pigments and paints with studio safety protocols.
Chemical Name
Nitroso: ferric-nitroso-beta-naphthol
Dry Pigments listing PG8
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