This has only moderate lightfastness, and sometimes the lightfastness can be very poor. Additionally it may release carcinogens, as well as cause methemoglobinemia, see Monona Rossol's work here for more information. Handprint recommends PY154 instead. The "G" stands for green, by contrast Hansa Yellow 10G is more of a greenish yellow.
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Hansa Yellow G
PY1
Alternate Names
Arylide Yellow G
Hansa Yellow Medium
Pigment Description
Resources
PY1 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com
Information about PY1 from Bruce MacEvoy, Handprint Guide to Watercolors,
Rossol, Monona. The Artist's Complete Health and Safety Guide. New York, NY : Allworth Press, 2001. The book is rather dated, updated information is available from her website.
Stats
Lightfastness
Varies, may be Poor
Lightfastness can range from Very Good to Fair to Very Poor depending on the medium.
Transparency
Varies, Semi-Transparent
Toxicity
Previously thought to be in the category of Low Concern, new research suggests this may release carcinogens and also cause methemoglobinemia.
See Monona Rossol's research available upon request here for more information. Treat all pigments and paints with studio safety protocols.
Tinting
Good
Dry Time
Very Slow to Slow
Oil Content
Medium
Medium by volume, but when made into a paint sometimes it is medium-high.
Particle Size
Very Fine
Chemical Name
monoazo, acetocetyl
Dry Pigments listing PY1
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