Global InformationTetramethylethylene information
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| Names | |
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| Preferred IUPAC name
2,3-Dimethylbut-2-ene | |
| Identifiers | |
CAS Number
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3D model (JSmol)
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| ChemSpider |
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| ECHA InfoCard | 100.008.422 |
| EC Number |
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PubChem CID
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| UNII |
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CompTox Dashboard (EPA)
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InChI
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SMILES
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| Properties | |
Chemical formula
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C6H12 |
| Molar mass | 84.162 g·mol−1 |
| Appearance | colorless liquid |
| Density | 0.7075 g/cm3 (20 °C) |
| Melting point | −74.6 °C (−102.3 °F; 198.6 K) |
| Boiling point | 73.3 °C (163.9 °F; 346.4 K) |
| Critical point (T, P) | 521.0(9) K, 3.4(1) MPa[1] |
Solubility in water
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insoluble |
| Solubility | soluble in ethanol, ether, acetone, chloroform[1] |
Magnetic susceptibility (χ)
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−65.9×10−6 cm3·mol−1[1] |
Refractive index (nD)
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1.4122 (20 °C)[1] |
| Thermochemistry[1] | |
Heat capacity (C)
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174.7 J·mol−1·K−1 |
Std molar
entropy (S⦵298) |
270.2 J·mol−1·K−1 |
Std enthalpy of
formation (ΔfH⦵298) |
−101.4 kJ·mol−1 (liquid) −68.1 kJ·mol−1 (gas) |
Enthalpy of fusion (ΔfH⦵fus)
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6.45 kJ·mol−1 (at melting point) |
Enthalpy of vaporization (ΔfHvap)
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32.51 kJ·mol−1 (25 °C) 29.64 kJ·mol−1 (at boiling point) |
| Hazards | |
| GHS labelling: | |
Pictograms
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Signal word
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Danger |
Hazard statements
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H225, H304 |
Precautionary statements
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P210, P233, P240, P241, P242, P243, P280, P301+P310, P303+P361+P353, P331, P370+P378, P403+P235, P405, P501 |
| Flash point | −8 °C |
Autoignition
temperature |
401 °C[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Tetramethylethylene is a hydrocarbon with the formula Me2C=CMe2 (Me = methyl). A colorless liquid, it is the simplest tetrasubstituted alkene.
- ^ a b c d e f CRC handbook of chemistry and physics : a ready-reference book of chemical and physical data. William M. Haynes, David R. Lide, Thomas J. Bruno (2016-2017, 97th ed.). Boca Raton, Florida. 2016. ISBN 978-1-4987-5428-6. OCLC 930681942.
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