Propyne
ALDRICH/480983 - ≥97%
Synonym: Allylene; Methylacetylene
CAS Number: 74-99-7
Empirical Formula (Hill Notation): C3H4
Molecular Weight: 40.06
EC Number: 200-828-4
MDL Number: MFCD00036235
Linear Formula: CH3C≡CH
Product Type: Chemical
| assay | ≥97% |
| bp | −23.2 °C (lit.) |
| form | gas |
| InChI | 1S/C3H4/c1-3-2/h1H,2H3 |
| InChI key | MWWATHDPGQKSAR-UHFFFAOYSA |
| mp | −102.7 °C (lit.) |
| Quality Level | 100  |
| SMILES string | CC#C |
| vapor pressure | 204.6 mmHg ( −49.5 °C) |
| Application: | Propyne (CH3C≡CH) can be used: • As a fuel for stoichiometric low-pressure flat-flames in isomer-specific combustion studies. • In the synthesis of polycyclic aromatic hydrocarbons under various reaction conditions. • In the synthesis of phenylacetylenes. • In the selective synthesis of propene by catalytic hydrogenation using Pt/Al2O3 catalyst. |
| General description: | Propyne (methylacetylene) is commonly used in gas welding. |
| Legal Information: | Aldrich is a registered trademark of Sigma-Aldrich Co. LLC |
| Legal Information: | Sure/Pac is a trademark of Sigma-Aldrich Co. LLC |
| Packaging: | 25, 100 g in Sure/Pac™ |
| Packaging: | Supplied in a Sure/Pac™ cylinder and has a brass needle valve with a male 1/4" NPTF outlet thread installed. Before using the cylinder, ensure that the valve is closed, then remove the galvanized steel hex cap that seals the outlet valve. Compatible with the following: • Aldrich® Sure/Pac™ station for liquefied gases Z566446 • PTFE Sealing tape Z104388 or Z221880 • Brass hose adapter Z146811 • Aldrich® mini gas regulator Z513539 |
| Symbol |    GHS02,GHS04,GHS07 |
| Signal word | Danger |
| Hazard statements | H220 - H280 - H335 |
| Precautionary statements | P210 - P410 + P403 |
| Hazard Codes | F,Xi |
| Risk Statements | 11-37-43 |
| Safety Statements | 16-36-37-38 |
| RIDADR | UN 1954 2.1 |
| WGK Germany | nwg |
| Purity | ≥97% |
| bp | −23.2 °C (lit.) |
| mp | −102.7 °C (lit.) |
| UNSPSC | 12142100 |