Ethoxyethyne
- CAS NO.：927-80-0
- Empirical Formula: C4H6O
- Molecular Weight: 70.09
- MDL number: MFCD00009247
- EINECS: 213-164-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:27:01
What is Ethoxyethyne?
Chemical properties
Clear orange to brown solution
The Uses of Ethoxyethyne
Ethoxyacetylene is used in Arens-van Dorp synthesis to prepare propargyl alcohol via reaction with ketone. In organic synthesis, it undergoes [2+2] cycloaddition reactions with ketenes to give cyclobutenone derivatives. It is also used to prepare alpha, beta-unsaturated esters from ketones by following Meyer-Schuster rearrangement.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.
The Uses of Ethoxyethyne
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.
Properties of Ethoxyethyne
| Boiling point: | 53°C |
| Density | 0.732 g/mL at 25 °C |
| refractive index | n |
| Flash point: | −20 °F |
| storage temp. | 2-8°C |
| color | Clear Yellow |
| Water Solubility | Slightly miscible with water. |
| BRN | 741882 |
| Dielectric constant | 8.0500000000000007 |
| Exposure limits | ACGIH: TWA 50 ppm (Skin) OSHA: TWA 500 ppm(1800 mg/m3) NIOSH: IDLH 1100 ppm; TWA 50 ppm(180 mg/m3) |
| CAS DataBase Reference | 927-80-0(CAS DataBase Reference) |
| NIST Chemistry Reference | Ethoxyacetylene(927-80-0) |
Safety information for Ethoxyethyne
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07  Health Hazard GHS08  Environment GHS09 |
| GHS Hazard Statements |
H225:Flammable liquids H304:Aspiration hazard H315:Skin corrosion/irritation H336:Specific target organ toxicity,single exposure; Narcotic effects H361:Reproductive toxicity H373:Specific target organ toxicity, repeated exposure H411:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P202:Do not handle until all safety precautions have been read and understood. P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P273:Avoid release to the environment. P331:Do NOT induce vomiting. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. |
Computed Descriptors for Ethoxyethyne
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