294985
Allene
≥95%
Synonym(s):
Propadiene
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About This Item
Linear Formula:
H2C=C=CH2
CAS Number:
Molecular Weight:
40.06
UNSPSC Code:
12142100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
207-335-3
Beilstein/REAXYS Number:
1730774
MDL number:
Assay:
≥95%
vapor density
1.42 (20 °C, vs air)
Quality Segment
vapor pressure
6795 mmHg ( 21 °C)
assay
≥95%
expl. lim.
13 %
bp
−34 °C (lit.)
mp
−136 °C (lit.)
SMILES string
C=C=C
InChI
1S/C3H4/c1-3-2/h1-2H2
InChI key
IYABWNGZIDDRAK-UHFFFAOYSA-N
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.
Packaging
Supplied in a carbon steel lecture bottle with a CGA180M/CGA110F needle valve installed.
Compatible with the following:
Compatible with the following:
- Aldrich® lecture-bottle station systems
- Aldrich® lecture-bottle gas regulators
Other Notes
See Technical Information Bulletin AL-151 Gas Regulators: Selection, Installation, and Operation
Legal Information
Aldrich is a registered trademark of Sigma-Aldrich Co. LLC
signalword
Danger
hcodes
Hazard Classifications
Flam. Gas 1 - Press. Gas Liquefied gas
Storage Class
2A - Gases
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)
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