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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:
75-28-5
Molecular Weight:
58.12
Beilstein:
1730720
EC Number:
200-857-2
MDL number:
MFCD00008926
UNSPSC Code:
12142100
PubChem Substance ID:
24857785
NACRES:
NA.22

vapor density

2.01 (21 °C, vs air)

Quality Level

100

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
GHS02,GHS04

Signal Word

Danger

Hazard Statements

H220,H280

Precautionary Statements

P210 - P377 - P381 - P410 + P403

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Laure Pison et al.
Physical chemistry chemical physics : PCCP, 17(45), 30328-30342 (2015-10-29)
The solubility of n-butane and 2-methylpropane (isobutane) in three ionic liquids - 1-(2-methylpropyl)-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [(2mC3)C1im][Ntf2], 1-(3-methylbutyl)-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [(3mC4)C1im][Ntf2] and 1-methyl-3-pentylimidazolium bis(trifluoromethylsulfonyl)imide [C5C1im][Ntf2] - has been measured at atmospheric pressure from 303 to 343 K. Isobutane is less soluble than n-butane
Vera Lepperhof et al.
PloS one, 9(9), e107363-e107363 (2014-09-17)
Cell loss after transplantation is a major limitation for cell replacement approaches in regenerative medicine. To assess the survival kinetics of induced pluripotent stem cell (iPSC)-derived cardiomyocytes (CM) we generated transgenic murine iPSC lines which, in addition to CM-specific expression
Richard Wolfenden et al.
Proceedings of the National Academy of Sciences of the United States of America, 112(24), 7484-7488 (2015-06-03)
The hydrophobicities of the 20 common amino acids are reflected in their tendencies to appear in interior positions in globular proteins and in deeply buried positions of membrane proteins. To determine whether these relationships might also have been valid in
Christian Geis et al.
Experimental neurology, 265, 8-21 (2014-12-30)
Neuromyelitis optica (NMO) is causally linked to autoantibodies (ABs) against aquaporin 4 (AQP4). Here, we focused on the pathogenic effects exclusively mediated by human ABs to AQP4 in vivo. We performed cell-free intrathecal (i.th.) passive transfer experiments in Lewis rats
Trieu-Vuong Dinh et al.
Environmental science and pollution research international, 22(12), 9345-9355 (2015-01-21)
The characteristics of volatile organic compounds (VOCs) emitted from several consumer and commercial products (body wash, dishwashing detergent, air freshener, windshield washer fluid, lubricant, hair spray, and insecticide) were studied and compared. The spray products were found to emit the

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