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LC2427 Ethyl isocyanate
for synthesis


Order number Packaging Quantity Price €
AC29427 Glass bottle 10 ml 18.45
AC29427 Glass bottle 100 ml 138.60


Product information
Synonyms Isocyanic acid ethyl ester
Hill Formula C3H5NO
Chemical formula C2H5NCO
HS Code 2929 10 00
EC number 203-717-9
Molar mass 71.07 g/mol
CAS number 109-90-0


Chemical and physical data
Solubility (20 °C) (decomposition)
Molar mass 71.07 g/mol
Density 0.91 g/cm3 (20 °C)
Boiling point 60 °C (1013 hPa)
Vapor pressure 147 hPa (20 °C)
Flash point -18 °C
Refractive index 1.3808 (20 °C, 589 nm)


Safety information
R Phrase R 11-26-36/37/38-42
Highly flammable.Very toxic by inhalation.Irritating to eyes, respiratory system and skin.May cause sensitization by inhalation.
S Phrase S 16-23-36/37/39-45
Keep away from sources of ignition – No smoking.Do not breathe vapour.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger highly flammable, very toxic, irritant, sensitizing
Hazard Symbol

Very toxic

Storage class 3 Flammable Liquids
WGK WGK 3 highly water endangering
Disposal 11
Organic acid halides, anhydrides and isocyanates can be added dropwise to an excess of methanol (Cat. No. 822283) to convert them into the corresponding methyl esters or methyl carbamates. If necessary, neutralize with sodium hydroxide solution (Cat. No. 105587). Fill into container A.


Transport information
Declaration (transport by sea) IMDG-Code UN 2481 ETHYL ISOCYANATE, 3 (6.1), I
Declaration (transport by air) IATA-DGR UN 2481 ETHYL ISOCYANATE, 3 (6.1),


Assay (GC, area%) ≥ 98 %
Density (d 20 °C/ 4 °C) 0.903 – 0.906
Identity(IR) passes test



≥ 115 °C