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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
Catalog Number PKG Qty. Price Quantity
45-295469-100G 100 g
 $230.00
1/EA		 Add To Favorites
45-295469-400G 400 g
 $873.00
1/EA		 Add To Favorites
45-295469-1KG 1 kg
 $1290.00
1/EA		 Add To Favorites

 

assay 99%
autoignition temp. 869 °F
bp −6.9 °C (lit.)
InChI 1S/C4H8/c1-4(2)3/h1H2,2-3H3
InChI key VQTUBCCKSQIDNK-UHFFFAOYSA-N
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-dimethylcyclopropane carboxylic acid, a key building block for the synthesis of cilastatin.
• 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-Dimethylcyclopropane carboxylic acid via asymmetric cyclopropanation reaction.
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 GHS02GHS04  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

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