2-Methylpropene
ALDRICH/295469 - 99%
Synonym: Isobutylene
CAS Number: 115-11-7
Empirical Formula (Hill Notation): C4H8
Molecular Weight: 56.11
EC Number: 204-066-3
MDL Number: MFCD00008898
Linear Formula: (CH3)2C=CH2
Product Type: Chemical
| assay | 99% |
| autoignition temp. | 869 °F |
| bp | −6.9 °C (lit.) |
| InChI | 1S/C4H8/c1-4(2)3/h1H2,2-3 |
| InChI key | VQTUBCCKSQIDNK-UHFFFAOYSA |
| mp | −140 °C |
| Quality Level | 100  |
| SMILES string | CC(C)=C |
| vapor density | 2 (vs air) |
| vapor pressure | 3278 mmHg ( 37.7 °C) |
| Application: | 2-Methylpropene can be used in the following reactions: • Asymmetric synthesis of S-(+)-2,2-dimethylcyclopro • Alkylation of p-xylene to form t-butyl-p-xylene catalyzed by a heteropolyacid. • Synthesis of poly(2-methylpropene) or polyisobutene. |
| General description: | 2-methylpropene is used to synthesize S-(+)-2,2-Dimethylcyclopr |
| 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: | 1 kg in Sure/Pac™ |
| Packaging: | 100, 400 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 |
| Signal word | Danger |
| Hazard statements | H220 - H280 |
| Precautionary statements | P210 - P410 + P403 |
| Hazard Codes | F+ |
| Risk Statements | 12 |
| Safety Statements | 9-16-33 |
| RIDADR | UN1055 - class 2 - Isobutylene |
| WGK Germany | nwg |
| Flash Point(F) | -112.0 °F - closed cup |
| Flash Point(C) | -80 °C - closed cup |
| Purity | 99% |
| bp | −6.9 °C (lit.) |
| mp | −140 °C |
| UNSPSC | 12142100 |