2-Methyl-2-butene , 90% , 513-35-9
Synonym(s):
β-Isoamylene;2-Methyl-2-butene;Amylene;Isoamylene, Trimethylethylene
CAS NO.：513-35-9
Empirical Formula: C5H10
Molecular Weight: 70.13
MDL number: MFCD00009276
EINECS: 208-156-3
PRODUCT Properties
| Melting point: | -134 °C (lit.) |
| Boiling point: | 35-38 °C (lit.) |
| Density | 0.662 g/mL at 25 °C (lit.) |
| vapor density | 2.4 (vs air) |
| vapor pressure | 25.7 psi ( 55 °C) |
| refractive index | n |
| RTECS | EM7580000 |
| Flash point: | −4 °F |
| storage temp. | 2-8°C |
| solubility | Chloroform, Methanol (Slightly) |
| form | Liquid |
| color | Colorless |
| explosive limit | 8.7% |
| Water Solubility | Miscible with alcohol, benzene, ligroin, ethylene oxide and ether. Immiscible with water. |
| Merck | 14,607 |
| BRN | 1361353 |
| Dielectric constant | 2.1（20℃） |
| Stability: | Volatile |
| LogP | 2.67 |
| CAS DataBase Reference | 513-35-9(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Butene, 2-methyl-(513-35-9) |
| EPA Substance Registry System | 2-Methyl-2-butene (513-35-9) |
Description and Uses
2-Methyl-2-butene (also named as Amylene) is an alkene hydrocarbon with the molecular formula C5H10. It is a colorless to pale yellow clear liquid. It can be used as a free radical scavenger in trichloromethane and dichloromethane. It was used for the alkylation of 3-methylthiophene over a zeolitic catalyst. It was also used as a precursor of peroxyacetyl nitrate for calibration purpose.
2-Methyl-2-butene is used to prepare 3-Brom-2.3-dimethyl-1.1-dicyan-butan in the presence of 2,2'-azobis-(2,4-dimethyl-4-methoxyvaleronitrile) as a catalyst. It may be employed as precursor for peroxyacetyl nitrate for the calibration purposes.
Safety
| Symbol(GHS) |     GHS02,GHS07,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H224-H302-H304-H336-H341-H411 |
| Precautionary statements | P201-P210-P273-P301+P310+P331-P308+P313-P403+P233 |
| Hazard Codes | F,Xn,N,F+ |
| Risk Statements | 11-22-65-51/53-12-36/37/38-19-68-67-38-52/53-40-36/37 |
| Safety Statements | 45-9-61-33-16-36/37/39-26-62-36/37 |
| RIDADR | UN 2460 3/PG 2 |
| WGK Germany | 3 |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29012900 |
| Hazardous Substances Data | 513-35-9(Hazardous Substances Data) |
| Limited Quantities | 1.0 L (0.3 gallon) (liquid) |
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml) |
