Tetramethylethylene oxide
Synonym(s):2,2,3,3-Tetramethyloxirane;2,3-Dimethyl-2-butene epoxide;2,3-Dimethyl-2-butene oxide;2,3-Epoxy-2,3-dimethylbutane;Tetramethylethylene oxide
- CAS NO.：5076-20-0
- Empirical Formula: C6H12O
- Molecular Weight: 100.16
- MDL number: MFCD00462217
- EINECS: 225-785-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-09-12 18:51:24
What is Tetramethylethylene oxide?
Synthesis Reference(s)
Journal of the American Chemical Society, 104, p. 6122, 1982 DOI: 10.1021/ja00386a051
The Journal of Organic Chemistry, 46, p. 1964, 1981 DOI: 10.1021/jo00322a058
Tetrahedron Letters, 24, p. 123, 1983 DOI: 10.1016/S0040-4039(00)81345-3
General Description
Colorless liquid.
Air & Water Reactions
Water soluble.
Reactivity Profile
Epoxides, such as TETRAMETHYLETHYLENE OXIDE, are highly reactive. They polymerize in the presence of catalysts or when heated. These polymerization reactions can be violent. Compounds in this group react with acids, bases, and oxidizing and reducing agents. They react, possibly violently with water in the presence of acid and other catalysts.
Fire Hazard
Flash point data for TETRAMETHYLETHYLENE OXIDE are not available. TETRAMETHYLETHYLENE OXIDE is probably combustible.
Properties of Tetramethylethylene oxide
| Boiling point: | 90-92 °C/760 mmHg |
| Density | 0.781 g/mL at 25 °C |
| refractive index | n 20/D 1.396 |
| Flash point: | -4 °C |
| EPA Substance Registry System | 2,3-Epoxy-2,3-dimethylbutane (5076-20-0) |
Safety information for Tetramethylethylene oxide
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H225:Flammable liquids H302:Acute toxicity,oral |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. |
Computed Descriptors for Tetramethylethylene oxide
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