Crotononitrile, mixture of cis and trans
ALDRICH/252522 - 99%
Synonym: 2-Butenenitrile, mixture of cis and trans
CAS Number: 4786-20-3
Empirical Formula (Hill Notation): C4H5N
Molecular Weight: 67.09
EC Number: 225-335-1
MDL Number: MFCD00001935
Linear Formula: CH3CH=CHCN
Product Type: Chemical
| assay | 99% |
| bp | 120-121 °C (lit.) |
| density | 0.824 g/mL at 25 °C (lit.) |
| form | liquid |
| functional group | nitrile |
| InChI | 1S/C4H5N/c1-2-3-4-5/h2-3H |
| InChI key | NKKMVIVFRUYPLQ-NSCUHMNNSA |
| Quality Level | 100 ![]() |
| refractive index | n |
| SMILES string | CC=CC#N |
| General description: | Neurotoxic properties of crotononitrile have been investigated. Mechanism of the Baylis-Hillman reaction of crotononitrile and benzaldehyde in the presence of 1,4-diazabicyclo[2,2,2]oc |
| Packaging: | 5, 100, 500 mL in glass bottle |
| Symbol | ![]() GHS02,GHS07 |
| Signal word | Danger |
| Hazard statements | H225 - H302 - H315 - H319 - H335 |
| Precautionary statements | P210 - P301 + P312 + P330 - P302 + P352 - P305 + P351 + P338 |
| Hazard Codes | F,Xn |
| Risk Statements | 11-22-36/37/38 |
| Safety Statements | 16-26-36 |
| RIDADR | UN 1993BE 3 / PGII |
| WGK Germany | WGK 3 |
| Flash Point(F) | 60.8 °F - closed cup |
| Flash Point(C) | 16 °C - closed cup |
| Purity | 99% |
| bp | 120-121 °C (lit.) |
| Density | 0.824 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 12352100 |



