922-67-8
| Name | Methyl propiolate |
| CAS | 922-67-8 |
| EINECS(EC#) | 213-083-5 |
| Molecular Formula | C4H4O2 |
| MDL Number | MFCD00008572 |
| Molecular Weight | 84.07 |
| MOL File | 922-67-8.mol |
Chemical Properties
| Appearance | colourless to light yellow liquid |
| Melting point | 171-173 °C |
| Boiling point | 103-105 °C (lit.) |
| density | 0.945 g/mL at 25 °C(lit.) |
| refractive index | n |
| Fp | 50 °F |
| storage temp. | Refrigerator (+4°C) + Flammables area |
| solubility | Chloroform (Sparingly), Methanol (Sparingly) |
| form | Liquid |
| color | Clear colorless |
| Specific Gravity | 0.9450 |
| Stability: | Stable. Highly flammable. Incompatible with strong oxidizing agents, bases, acids. |
| Water Solubility | Not miscible in water. |
| BRN | 605462 |
| InChI | 1S/C4H4O2/c1-3-4(5)6-2/h1H,2H3 |
| InChIKey | IMAKHNTVDGLIRY-UHFFFAOYSA-N |
| SMILES | COC(=O)C#C |
| CAS DataBase Reference | 922-67-8(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Propynoic acid, methyl ester(922-67-8) |
Safety Data
| Symbol(GHS) |   GHS02,GHS07 |
| Signal word | Danger |
| Hazard statements | H225-H315-H319-H335 |
| Precautionary statements | P210-P233-P240-P241-P303+P361+P353-P305+P351+P338 |
| Hazard Codes | F,Xi |
| Risk Statements | |
| Safety Statements | |
| RIDADR | UN 3272 3/PG 2 |
| WGK Germany | 3 |
| RTECS | UE0050000 |
| F | 19 |
| Hazard Note | Highly Flammable/Harmful |
| REACH Registrations | Active |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29161980 |
| Storage Class | 3 - Flammable liquids |
| Hazard Classifications | Eye Irrit. 2 Flam. Liq. 2 Skin Irrit. 2 STOT SE 3 |