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Isoindole Yellow

PY109

Alternate Names

Isoindolinone Yellow G

Isoindoline Yellow

Pigment Description

Excellent to decent lightfastness with a bit of fading in tints. Offered by two watercolor makers.

Resources

PY109 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com

Stats

Lightfastness

Excellent to Very Good

ASTM I, with slight fading in tints (7s on the BWS).

Transparency

Semi-Transparent

Toxicity

Thought to be in the category of Lower Concern

Treat all pigments and paints with studio safety protocols.

Dry Time

Slow

Chemical Name

aminoketone, G tetrachloroisoindolinone

Dry Pigments listing PY109

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