T1 Methyl Isobutyl Ketone - Environmental Health Criteria 117 A1 World Health Organization, A1 United Nations Environment Programme, A1 International Labour Organisation, K1 chemical K1 toxic substance K1 isobutylene K1 carcinogen K1 neutron K1 human ecology 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 Sep 20, 2026