2-Ethyl-1-butene
- CAS NO.：760-21-4
- Empirical Formula: C6H12
- Molecular Weight: 84.16
- MDL number: MFCD00009341
- EINECS: 212-078-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-09-12 18:43:55
What is 2-Ethyl-1-butene?
Chemical properties
Colorless liquid. Soluble in alcohol, acetone, ether, and benzene; insoluble in water. Combustible.
The Uses of 2-Ethyl-1-butene
2-Ethyl-1-butene is used as an intermediate in organic synthesis and pharmaceuticals.
The Uses of 2-Ethyl-1-butene
Organic synthesis of flavors, perfumes, medicines, dyes, resins.
Safety Profile
A human eye irritant. A very dangerous fire hazard when exposed to heat, flames, or oxidizers. To fight fire, use dry chemical, CO2, foam, spray. When heated to decomposition it emits acrid smoke and irritating fumes.
Purification Methods
Wash it with 10N aqueous NaOH, then water. Dry the organic layer with CaCl2, filter and fractionally distil it. [Beilstein 1 IV 850.]
Properties of 2-Ethyl-1-butene
| Melting point: | −131.5-−131 °C(lit.) |
| Boiling point: | 64-65 °C(lit.) |
| Density | 0.689 g/mL at 25 °C(lit.) |
| refractive index | n |
| Flash point: | −15 °F |
| storage temp. | 2-8°C |
| form | clear liquid |
| color | Colorless to Almost colorless |
| Water Solubility | Soluble in alcohol, and methanol. Insoluble in water. |
| BRN | 1697102 |
| CAS DataBase Reference | 760-21-4(CAS DataBase Reference) |
| EPA Substance Registry System | 3-Methylenepentane (760-21-4) |
Safety information for 2-Ethyl-1-butene
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H225:Flammable liquids H317:Sensitisation, Skin |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. |
Computed Descriptors for 2-Ethyl-1-butene
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