Allene
ALDRICH/294985 - ≥95%
Synonym: Propadiene
CAS Number: 463-49-0
Empirical Formula (Hill Notation): C3H4
Molecular Weight: 40.06
EC Number: 207-335-3
MDL Number: MFCD00008566
Linear Formula: H2C=C=CH2
Product Type: Chemical
| assay | ≥95% |
| bp | −34 °C (lit.) |
| expl. lim. | 13 % |
| InChI | 1S/C3H4/c1-3-2/h1-2H2 |
| InChI key | IYABWNGZIDDRAK-UHFFFAOYSA |
| mp | −136 °C (lit.) |
| SMILES string | C=C=C |
| vapor density | 1.42 (20 °C, vs air) |
| vapor pressure | 6795 mmHg ( 21 °C) |
| Application: | • Allene is extensively used in a variety of photochemical, thermal, and transition metal-mediated cycloadditions. • It can be lithiated to obtain allenyllithium which reacts with alkyl halides to afford terminal allenes. • Additional application includes the preparation of reagents such as isopropenylsilanes and isopropenylstannanes by reacting with stannyl and silyl cuprates respectively. |
| Legal Information: | Aldrich is a registered trademark of Sigma-Aldrich Co. LLC |
| Other Notes: | See Technical Information Bulletin AL-151 Gas Regulators: Selection, Installation, and Operation  |
| Packaging: | 170 g in stainless steel cylinder |
| Packaging: | Supplied in a carbon steel lecture bottle with a CGA180M/CGA110F needle valve installed. Compatible with the following: • Aldrich® lecture-bottle station systems • Aldrich® lecture-bottle gas regulators |
| Symbol |   GHS02,GHS04 |
| Signal word | Danger |
| Hazard statements | H220 - H280 |
| Precautionary statements | P210 - P377 - P381 - P410 + P403 |
| Hazard Codes | F+ |
| Risk Statements | 12 |
| Safety Statements | 9-16-33 |
| RIDADR | UN 2200 2.1 |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥95% |
| bp | −34 °C (lit.) |
| mp | −136 °C (lit.) |
| UNSPSC | 12142100 |