PRODUCT Properties
| Boiling point: | 53°C |
| Density | 0.732 g/mL at 25 °C |
| refractive index | n |
| Flash point: | −20 °F |
| storage temp. | 2-8°C |
| solubility | sol alcohol, ether, benzene, hexane |
| form | liquid |
| color | Clear Yellow |
| Water Solubility | Slightly miscible with water. |
| BRN | 741882 |
| Exposure limits | ACGIH: TWA 50 ppm (Skin) OSHA: TWA 500 ppm(1800 mg/m3) NIOSH: IDLH 1100 ppm; TWA 50 ppm(180 mg/m3) |
| Dielectric constant | 8.0500000000000007 |
| InChI | InChI=1S/C4H6O/c1-3-5-4-2/h1H,4H2,2H3 |
| InChIKey | WMYNMYVRWWCRPS-UHFFFAOYSA-N |
| SMILES | C#COCC |
| CAS DataBase Reference | 927-80-0(CAS DataBase Reference) |
| NIST Chemistry Reference | Ethoxyacetylene(927-80-0) |
Description and Uses
Used with N-vinylamides and triflic anhydride in a direct, three-component synthesis of pyridines. Also used to prepare α,β-unsaturated esters from ketones via a Meyer-Schuster rearrangement.
Safety
| Symbol(GHS) |     GHS02,GHS07,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H225-H304-H315-H336-H361-H373-H411 |
| Precautionary statements | P202-P210-P273-P301+P310-P303+P361+P353-P331 |
| Hazard Codes | F,Xn,N |
| Risk Statements | 11-38-48/20-51/53-62-65-67-36/37/38-36/38 |
| Safety Statements | 16-36/37-61-62-45-36/37/39-26-33-29-9 |
| RIDADR | UN 1993 3/PG 2 |
| WGK Germany | 3 |
| RTECS | KN9900000 |
| Hazard Note | Highly Flammable/Keep Cold |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29091990 |
