Lightfastness can vary. This is a rare pigment which appears to be in use by one paintmaker. A bright middle yellow. The lightfastness of PY120 is questionable, and Bruce MacEvoy describes it as "impermanent".
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PV Fast Yellow H2G
PY120
Alternate Name
Benzimidiazolone yellow
Pigment Description
Resources
PY120 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com
Information about PY120 from Bruce MacEvoy, Handprint Guide to Watercolors, General information about this class of pigments from Handprint,
Stats
Lightfastness
Varies considerably
Some report solidly highest marks for this pigment. In watercolor, it fared poorly in Bruce MacEvoy’s tests.
Transparency
Semi-Transparent
Toxicity
Thought to be in the category of Lower Concern
Treat all pigments and paints with studio safety protocols.
Dry Pigments listing PY120
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