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I'll vote for "quimico" as well...
The accented "í" is an extended ASCII character, not readily available on [many¦some¦English] keyboards, and therefore [could¦does] pose a problem if one is typing the URL in their address bar.
"Químico" [KEE-mee-koh] ("chemical" en Inglés) is correct for Latin America. :)
Las VegasOctober 6-8, 2015