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On July 19, 2004, EPA announced the receipt of a complete petition from the American Chemistry Council (ACC) requesting the removal of methyl isobutyl ketone (MIBK), or hexone, CAS Number 108101, from the list of hazardous air pollutants. EPA is taking comment until August 18, 2004. (69FR 42954-42956). Author: Kimberly D. Coy, Senior Engineer Date: 7/28/04
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