3-METHYL-1-BUTYNE
Synonym(s):1-Isopentyne;2-Methyl-3-butyne;3,3-Dimethyl-1-propyne;Isopropylacetylene;Isopropylethyne
- CAS NO.：598-23-2
- Empirical Formula: C5H8
- Molecular Weight: 68.12
- MDL number: MFCD00039853
- EINECS: 209-925-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-27 23:12:10
What is 3-METHYL-1-BUTYNE?
Chemical properties
Clear colorless to slightly yellow liquid
The Uses of 3-METHYL-1-BUTYNE
3-Methyl-1-butyne is a terminal alkyne that under goes hydrosilylation reaction using phenylsilane. 3-Methyl-1-butyne is used as an intermediate for pharmaceuticals, in cosmetics and in chemical research.
Definition
ChEBI: A terminal acetylenic compound that is but-1-yne substituted by a methyl group at position 3.
Properties of 3-METHYL-1-BUTYNE
| Melting point: | -89.7°C |
| Boiling point: | 29,5°C |
| Density | 0.666 g/mL at 25 °C (lit.) |
| RTECS | PF9060500 |
| refractive index | 1.374 |
| Flash point: | -30°(-22°F) |
| storage temp. | 2-8°C |
| form | Liquid |
| color | Clear colorless to slightly yellow |
| Water Solubility | Miscible with alcohol. Immiscible with water. |
| CAS DataBase Reference | 598-23-2 |
Safety information for 3-METHYL-1-BUTYNE
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02 |
| GHS Hazard Statements |
H224:Flammable liquids |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. |
Computed Descriptors for 3-METHYL-1-BUTYNE
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