“A chem-in-art term: hue-degrading; /
Intent of the artist, evading. /
The ‘fugitive pigment’ /
As putative figment, /
With color scheme, speedily fading.”
The 7 April 2026 Bluesky limerick returned to a more chemistry-content-focused theme during the NaPoWriMo routine, examining a phrase I reference some years in my Chemistry in Art course.
“A chem-in-art term: hue-degrading; /
Intent of the artist, evading..”
A pigment chosen by an artist years ago in mixing a paint might not look the same today. Pigments, like any chemical compounds, have varying capacities to react in the presence of light or heat, among other potential pathways.
Some of Vincent van Gogh’s works, for instance, are known to look different today than when he painted them (thanks to both fascinating scientific studies and the outstanding record that he left through his letters).
“The ‘fugitive pigment’ /
As putative figment /
With color scheme, speedily fading.”
I’ve written often here about how some chemistry terms are more evocative at first hearing (e.g., resonance; spontaneity) than they are intended to be in the disciplinary context. As I’ve had the opportunity to learn more about the chemistry in art overlap, I’ve seen this same kind of linguistic phenomenon there. In particular, after having several years in chemistry with which to learn the interesting ways in which jargon works, relative to everyday communication, I can now note some fascinating phrases via interdisciplinary overlaps, understanding that they have precise meanings when I hear experts use them in context.
One of my favorites is “fugitive pigment,” which references a pigment that is known to degrade over time. The spoonerism of “putative figment,” moreover, leads to an intriguingly linked phrase. Since the artist chooses the pigment, when that pigment is a fugitive one and thus its color changes over time, each individual viewing of an artwork could be considered an intentionally fleeting impression. This is an oversimplification (not all fugitive pigments are intentionally chosen; quite the opposite) but leads to a fun rhyme.
