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295469 Sigma-Aldrich

2-Methylpropene

99%

Synonym: Isobutylene

  • CAS Number 115-11-7

  • Linear Formula (CH3)2C=CH2

  • Molecular Weight 56.11

  •  Beilstein/REAXYS Number 773645

  •  EC Number 204-066-3

  •  MDL number MFCD00008898

  •  PubChem Substance ID 24857786

  •  NACRES NA.22

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Properties

Related Categories Chemical Synthesis, Specialty Gases, Synthetic Reagents More...
vapor density   2 (vs air)
vapor pressure   3278 mmHg ( 37.7 °C)
InChI Key   VQTUBCCKSQIDNK-UHFFFAOYSA-N
assay   99%
autoignition temp.   869 °F
bp   −6.9 °C (lit.)
mp   −140 °C

Description

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.

Packaging

1 kg in Sure-Pac™

100, 400 g in Sure-Pac™

Other Notes

For 295469-450G-EU packaging: 1000 mL of aluminium cylinder equipped with brass steel valve.

Recommended products

• For 295469-100G/400g/1kg:It is recommended that Brass hose adapter Z146811 is used for the 1 kg Sure-Pac.Brass hose adapter Z146811 or brass body mini gas regulator Z513539 is recommended.
• For 295469-450G-EU: outlet fitting: DIN 477-1 no.1, Z742160 or Z742161 are the recommended regulators.

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN1055 - class 2 - Isobutylene
WGK Germany 
nwg
RTECS 
UD0890000
Flash Point(F) 
-112 °F
Flash Point(C) 
-80 °C

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

Articles

GC Analysis of C1-C5 Hydrocarbons on Alumina Sulfate PLOT

From our library of Articles, Sigma-Aldrich presents GC Analysis of C1-C5 Hydrocarbons on Alumina Sulfate PLOT
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Sample preparations

GC Analysis of Hydrocarbons in Gasoline on Petrocol® DH, Isothermal

From our library of Articles, Sigma-Aldrich presents GC Analysis of Hydrocarbons in Gasoline on Petrocol® DH, Isothermal
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Purification, Separation

GC Analysis of Impurities in Propylene on Alumina Chloride PLOT

From our library of Articles, Sigma-Aldrich presents GC Analysis of Impurities in Propylene on Alumina Chloride PLOT
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Sample preparations

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Peer-Reviewed Papers
15

References

Related Products

hose barb

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Description

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Z146811 Hose adapter, brass

regulator

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Description

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Z742126 OHAUS® Pioneer precision balance, Model PA2201, AC/DC input 110 V AC, US 2-pin plug
Z513539 Aldrich® mini gas regulator, brass body

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