RT Report T1 Environmental Health Criteria 117: Methyl Isobutyl Ketone A1 United Nations Environment Programme, K1 chemical exposure K1 occupational exposure K1 toxicity K1 environmental risk assessment PB World Health Organization SN 9241571179 YR 1990 FD 1990 LK https://wedocs.unep.org/handle/20.500.11822/29686 UL https://wedocs.unep.org/handle/20.500.11822/29686 DS UN Environment Document Repository RD Nov 4, 2026