phthalic (THAL-ik, FTHAL-ik) - adj., of, relating to, or derived from naphthalene or phthalic acid.
(There we, dictionary, go on at least acknowledging the /f/.) This is the word, sort of, that sparked this week's list, and it all starts with Bob Ross. Last summer, Eaglet caught an episode of The Joy of Painting and it really, really stuck with them, especially the happy little trees, and they recently discovered that his soothing voice makes for great bedtime winding down -- plus they learn about how art works in the process. One of the colors that's frequently on his palette is phthalo blue -- and phthalo dyes are phthalic acid derivatives (via phthalocyanine). The word is shortened from naphthalic, from naphthalene, a coal-tar derivative used in mothballs, from naphtha, now a petroleum distillate but then a synonym for petroleum, from Latin, from Greek náphtha, from Old Persian *naftaʰ, probably from Akkadian napṭu, from nabâṭu, to be bright/flare up/blaze. Some powdered phthalo blue:

Thanks, WikiMedia!
---L.
(There we, dictionary, go on at least acknowledging the /f/.) This is the word, sort of, that sparked this week's list, and it all starts with Bob Ross. Last summer, Eaglet caught an episode of The Joy of Painting and it really, really stuck with them, especially the happy little trees, and they recently discovered that his soothing voice makes for great bedtime winding down -- plus they learn about how art works in the process. One of the colors that's frequently on his palette is phthalo blue -- and phthalo dyes are phthalic acid derivatives (via phthalocyanine). The word is shortened from naphthalic, from naphthalene, a coal-tar derivative used in mothballs, from naphtha, now a petroleum distillate but then a synonym for petroleum, from Latin, from Greek náphtha, from Old Persian *naftaʰ, probably from Akkadian napṭu, from nabâṭu, to be bright/flare up/blaze. Some powdered phthalo blue:
Thanks, WikiMedia!
---L.