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According to this file (Duke University PDF , or Google’s HTML cache ) the ingredients of Sharpie markers are as follows: Dyes. Propyl alcohol (N-Propanol), 200-250 PPM. … Butyl alcohol (N-Butanol), 50-100 PPM. … Diacetone alcohol (4-Hydroxy-4-Methyl-2-Pentanone), 50 PPM. Is it bad for you to smell Sharpies? The National InstituteRead More →