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295450

Sigma-Aldrich

2-Methylpropane

99%

Synonym(s):

Isobutane

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About This Item

Linear Formula:
(CH3)3CH
CAS Number:
Molecular Weight:
58.12
Beilstein:
1730720
EC Number:
MDL number:
UNSPSC Code:
12142100
PubChem Substance ID:
NACRES:
NA.22

vapor density

2.01 (21 °C, vs air)

Quality Level

vapor pressure

72.2 psi ( 37.7 °C)

Assay

99%

autoignition temp.

860 °F

expl. lim.

8.3 %

bp

−12 °C (lit.)

mp

−160 °C (lit.)

density

2.064 g/mL at 25 °C (lit.)

SMILES string

CC(C)C

InChI

1S/C4H10/c1-4(2)3/h4H,1-3H3

InChI key

NNPPMTNAJDCUHE-UHFFFAOYSA-N

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Application

2-Methylpropane can be used as a starting material to prepare:
  • Isobutylene by catalytic dehydrogenation using various catalysts.
  • Isopropyl methyl ketone by formylation reaction with carbon monoxide in the presence of super acid catalyst.
  • tert-Butylhydroperoxide (TBHP) by oxidation.

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:

Legal Information

Aldrich is a registered trademark of Sigma-Aldrich Co. LLC
Sure/Pac is a trademark of Sigma-Aldrich Co. LLC

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Pictograms

FlameGas cylinder

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Flam. Gas 1A - Press. Gas Liquefied gas

Storage Class Code

2A - Gases

WGK

nwg

Flash Point(F)

-117.4 °F - closed cup

Flash Point(C)

-83 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number

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