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T1 Methyl Isobutyl Ketone Health and Safety Guide - Health and Safety Guide 58
A1 United Nations Environment Programme, 
A1 World Health Organization, 
A1 International Labour Organisation, 
K1 health
K1 chemical
K1 health hazard
K1 chemical safety
SN 92 4 151058 7
YR 1991
FD 1991
LK https://wedocs.unep.org/handle/20.500.11822/29606
UL https://wedocs.unep.org/handle/20.500.11822/29606
NO This document provides a guide on methyl isobutyl ketone (MIBK), describing its chemical properties, industrial uses, exposure pathways, and associated health and environmental risks. It outlines occupational exposure as the primary concern, primarily through inhalation in lacquer, paint, and solvent applications. Findings from animal and human studies highlight reversible central nervous system depression and mucous membrane irritation at high concentrations. The document details preventive strategies including ventilation, protective equipment, and emergency response procedures. First-aid guidance is provided for inhalation, ingestion, and dermal or ocular contact. MIBK is characterized as having low acute toxicity and low environmental persistence, with minimal bioaccumulation potential and low toxicity to aquatic organisms. Regulatory exposure limits and safety classifications from multiple countries are summarized.
DS UN Environment Document Repository
RD Sep 22, 2026