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    Azo Condensation Yellow

    PY128

    Alternate Name

    Disazo Yellow GG

    Pigment Description

    Azo Condensation Yellow, sometimes called Transparent Brilliant Yellow or Polyazo yellow. This is a transparent yellow worth getting to know though lightfastness is not perfect (7's and 8's on the Blue Wool Scale).

    A swoosh of bright yellow transparent oil paint

    Winsor and Newton Transparent Yellow PY128 in oils

    It is a little bit difficult to find a good lightfast transparent yellow at this hue- Artiscreation suggests that perhaps it is an alternative to historical Cobalt Yellow or Aureolin.

    A daub of transparent yellow pulled by a palette knife

    PY128 in oils, Winsor and Newton Transparent Yellow

    Resources

    PY128 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com

    General information about this class of pigments from Handprint,

    Stats

    Lightfastness

    Excellent to Very Good

    In the old 1980s NPIRI tests, the versions of this pigment held their color in masstone during Florida outdoor lightfastness tests, but showed slight fading in tints. This is echoed by other tests reported on artiscreation that also show slight fall-off in tints (7’s on the BWS)

    Transparency

    Transparent

    Transparent

    Toxicity

    Lower Concern

    Treat all pigments and paints with studio safety protocols.

    Dry Time

    Slow

    Some paintmakers report 6-18 days dry time

    with PY128 (Azo Condensation Yellow)
    No single-pigment Oil found with PY128

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