methyl isocyanate
CAS 624-83-9 · C2H3NO
Hazard classDanger — Flammable, Health hazard, Toxic, Corrosive
PictogramsFlammableHealth hazardToxicCorrosive
H-statements- H225 Highly flammable liquid and vapour
- H361d Suspected of damaging the unborn child
- H330 Fatal if inhaled
- H311 Toxic in contact with skin
- H301 Toxic if swallowed
- H335 May cause respiratory irritation
- H315 Causes skin irritation
- H318 Causes serious eye damage
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
- H317 May cause an allergic skin reaction
Workplace exposure limitsNIOSH REL TWA 0.02 ppm (0.05 mg/m3) [skin]
OSHA PEL TWA 0.02 ppm (0.05 mg/m3) [skin]
IDLH 3 ppmOccupational exposure limits — NIOSH Pocket Guide.
SynonymsMETHYL ISOCYANATE · Isocyanatomethane · Methane, isocyanato- · methylisocyanate · Methyl carbonimide · Methylcarbylamine · Isocyanate de methyle · Iso-cyanatomethane
Molecular weight57.05 g/mol
Data sourceHarmonised classification ECHA — EU CLP Annex VILegally binding EU classification adopted by ECHA under CLP Annex VI — the highest-confidence GHS source.
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