1-PENTYNE
Synonym(s):1-Pentyne;Propylacetylene
- CAS NO.：627-19-0
- Empirical Formula: C5H8
- Molecular Weight: 68.12
- MDL number: MFCD00009469
- EINECS: 210-987-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-20 15:44:19
What is 1-PENTYNE?
Chemical properties
Clear colorless to pale yellow liquid
The Uses of 1-PENTYNE
1-Pentyne has been used in preparation of:lithium acetylides, required for asymmetric synthesis of α,α-dibranched propargyl sulfinamides. It is also used to synthesize 7-hydroxy-10-methoxy-3H-naphtho[2.1-b]pyrans.
The Uses of 1-PENTYNE
1-Pentyne has been used in preparation of:
- lithium acetylides, required for asymmetric synthesis of α,α-dibranched propargyl sulfinamides
- 7-hydroxy-10-methoxy-3H-naphtho[2.1-b]pyrans
General Description
Selective and non-selective hydrogenation of 1-pentyne catalyzed by silica-supported palladium has been studied by in situ X-ray absorption spectroscopy.
Safety Profile
Dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidizing materials. When heated to decomposition it emits acrid smoke and irritating fumes. See also ACETYLENE COMPOUNDS
Properties of 1-PENTYNE
| Melting point: | -106 °C |
| Boiling point: | 40 °C(lit.) |
| Density | 0.691 g/mL at 25 °C(lit.) |
| vapor pressure | 6.8 psi ( 20 °C) |
| refractive index | n |
| Flash point: | -34°C |
| storage temp. | Store at +2°C to +8°C. |
| solubility | 1.05g/l |
| form | Liquid |
| color | Clear colorless to pale yellow |
| Water Solubility | Soluble in water. (1.05 g/L) at 20°C. |
| BRN | 1697133 |
| CAS DataBase Reference | 627-19-0(CAS DataBase Reference) |
| EPA Substance Registry System | 1-Pentyne (627-19-0) |
Safety information for 1-PENTYNE
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02 |
| GHS Hazard Statements |
H225:Flammable liquids |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. |
Computed Descriptors for 1-PENTYNE
1-PENTYNE manufacturer
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