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539821

Sigma-Aldrich

2-Methylpropane

99.995%

Synonym(s):

Isobutane

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About This Item

Linear Formula:
(CH3)3CH
CAS Number:
75-28-5
Molecular Weight:
58.12
Beilstein/REAXYS Number:
1730720
EC Number:
200-857-2
MDL number:
MFCD00008926
UNSPSC Code:
12142100
PubChem Substance ID:
24878426
NACRES:
NA.22

vapor density

2.01 (21 °C, vs air)

vapor pressure

72.2 psi ( 37.7 °C)

assay

99.995%

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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Packaging

Supplied in a carbon steel lecture bottle with a CGA180M/CGA110F needle valve installed.

Compatible with the following:
  • Aldrich® lecture-bottle station systems
  • Aldrich® lecture-bottle gas regulators

Other Notes

See Technical Information Bulletin AL-151 Gas Regulators: Selection, Installation, and Operation

Legal Information

Aldrich is a registered trademark of Sigma-Aldrich Co. LLC

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pictograms

FlameGas cylinder
GHS02,GHS04

signalword

Danger

hcodes

H220,H280

Hazard Classifications

Flam. Gas 1A - Press. Gas Liquefied gas

Storage Class

2A - Gases

wgk_germany

nwg

flash_point_f

-117.4 °F - closed cup

flash_point_c

-83 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)

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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