According to Patterson's Dictionary for Chemists, "ethanol (ethyl alcohol)" = "éthanol"; "nonyl" = "nonyle" (m).
The adjectives "nonylic, nonoic" of acids = "nonylique"; the prefix "phen" = "phén"; "ethylene" = "éthylène". According to Hachette, the prefixes "oxy" and "poly" are used as in English. I think my answer should be correct, but the "e" on "nonyle" may need to be dropped.
Best regards,
Andréa

C'est presque le meme ordre, a part le trait d'union.
Excuses pour le manque d'accents, sur "meme", "a"part.