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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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