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Rhodamine 6G [FIAT], Rhodamine 6G Lake, Rhodamine Y (PTMA)a

PR81:1

Alternate Names

PR81 (no colon) Zanthrene: salt of basic dye

PTMA Pink

Rhodamine Y (PMA)

Pigment Description

A bright, chromatic pink beloved by watercolorists. Unfortunately too low in lightfastness to be suitable for artist's paints- a sinkingly low ASTM IV. In addition it is an animal teratogen, maybe a mutagen (?), and possibly a carcinogen according to Monona Rossol's latest writing, and may have even worse inclusions, so see her work for more.

Resources

PR81:1 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com

General information about this class of pigments from Handprint,

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

Poor

The NPIRI from the 1980s reports “appreciable” fading for both indoor and outdoor tests- both in masstone and in tints.

Transparency

Transparent

Toxicity

Hazard, Use more caution

Source PR81:1. Monona Rossol describes 2 types of PR81. PR18:1 is described as rhodamine 6G lake and the other is day-glo or fluorescent red. She groups these together in her comments. “Low acute toxicity. Animal teratogen. Mutation data. Questionable carcinogen. Some grades may contain Arsenic.”Some sources note molybdenum content. More information may be found on molybdenum in general from Monona Rossol's work, Treat all pigments and paints with studio safety protocols.

Chemical Name

Zanthrene: salt of basic dye, also listed as Xanthene: Salt of basic dye

with PR81:1 (Rhodamine 6G [FIAT], Rhodamine 6G Lake, Rhodamine Y (PTMA)a)
No single-pigment Oil found with PR81:1

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