Methyl isocyanate

C₂H₃NOCAS 624-83-957.05 g/mol

Open in Covalent MOL file

Isocyanate

Properties

Molecular formula: C₂H₃NO
Molar mass: 57.05 g/mol
Exact mass: 57.0215 Da
Density: 0.9599 g/mL (at 20 °C)
Melting point: −45 °C
Boiling point: 39.1–40.1 °C
Flash point: -7.2 °C (closed cup)
Water solubility: 100 g/L (15 °C)
logP: -0.05Crippen estimate
Polar surface area: 29.4 Å²
H-bond donors / acceptors: 0 / 2
Rotatable bonds: 0

Hazards

Danger

H225 Highly Flammable liquid and vaporFlammable liquids
H301 Toxic if swallowedAcute toxicity, oral
H311 Toxic in contact with skinAcute toxicity, dermal
H315 Causes skin irritationSkin corrosion/irritation
H317 May cause an allergic skin reactionSensitization, Skin
H318 Causes serious eye damageSerious eye damage/eye irritation
H330 Fatal if inhaledAcute toxicity, inhalation
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaledSensitization, respiratory
H335 May cause respiratory irritationSpecific target organ toxicity, single exposure; Respiratory tract irritation
H361d *** Suspected of damaging the unborn childReproductive toxicity

Harmonised EU classification (CLP Annex VI, index 615-001-00-7), via PubChem.

Precautionary statements

P203, P210, P233, P240, P241, P242, P243, P260, P261, P262, P264, P264+P265, P270, P271, P272, P280, P284, P301+P316, P302+P352, P303+P361+P353, P304+P340, P305+P354+P338, P316, P317, P318, P319, P320, P321, P330, P332+P317, P333+P317, P342+P316, P361+P364, P362+P364, P370+P378, P403, P403+P233, P403+P235, P405, P501