C3H5NO
71.08 g/mol
Pharmaceutical IntermediateDanger
ETHYL ISOCYANATE
CAS109-90-0EC203-717-9
Category
Pharmaceutical Intermediate
Compound Class
Other
Primary Use
Pharmaceutical Intermediate
Ethyl isocyanate is a colorless liquid that is less dense than water and insoluble in water. It can irritate the skin, eyes, and mucous membranes and may be lethal by inhalation.
Pharmaceutical manufacturing intermediatePesticide manufacturing intermediate
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Safety Reference
Danger
H225Highly flammable liquid and vapour
H301Toxic if swallowed
H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H319Causes serious eye irritation
H330Fatal if inhaled
H332Harmful if inhaled
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335May cause respiratory irritation
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for ETHYL ISOCYANATE (CAS 109-90-0) is 2929.10.
HS code (international, 6-digit)
2929.10
EU CN code (8-digit)
2929 10 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
isocyanatoethane
InChIKey
WUDNUHPRLBTKOJ-UHFFFAOYSA-N
SMILES
CCN=C=O
Synonyms (11)
- 1-Isocyanatoethane #
- ETHYL ISOCYANATE
- EtNCO
- Ethane, isocyanato-
- Isocyanatoethane
- Isocyanic acid, ethyl ester
- ehtyl isocyanate
- ethyisocyanate
- ethyl isocynate
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