270342

Sigma-Aldrich

2-Methylbutane

suitable for HPLC, ≥99.5%

Synonym(s):
Isopentane
Linear Formula:
CH3CH2CH(CH3)2
CAS Number:
Molecular Weight:
72.15
Beilstein/REAXYS Number:
1730723
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

vapor density

2.6 (vs air)

vapor pressure

11.17 psi ( 20 °C)

assay

≥99.5%

form

liquid

autoignition temp.

788 °F

purified by

glass distillation

expl. lim.

8.3 %

application(s)

HPLC: suitable

impurities

<0.020% water

evapn. residue

<0.0003%

refractive index

n20/D 1.354 (lit.)

bp

30 °C (lit.)

mp

-160 °C

density

0.62 g/mL at 25 °C (lit.)

λ

H2O reference

UV absorption

λ: 192 nm Amax: 1.00
λ: 210 nm Amax: 0.30
λ: 220 nm Amax: 0.07
λ: 240-400 nm Amax: 0.01

Featured Industry

Food and Beverages

storage temp.

2-8°C

SMILES string

CCC(C)C

InChI

1S/C5H12/c1-4-5(2)3/h5H,4H2,1-3H3

InChI key

QWTDNUCVQCZILF-UHFFFAOYSA-N

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Packaging

1, 6×1, 2 L in Sure/Seal™
100 mL in Sure/Seal™

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Signal Word

Danger

Hazard Statements

Target Organs

Central nervous system

Supp Hazards

EUH066

RIDADR

UN1265 - class 3 - PG 1 - Pentanes

WGK Germany

WGK 2

Flash Point(F)

-59.8 °F - closed cup

Flash Point(C)

-51 °C - closed cup

Certificate of Analysis

Certificate of Origin

Johnson AW.
Invitation to Organic Chemistry., 338-338 (1999)
Rotational Isomerism and Thermodynamic Functions of 2-Methylbutane and 2, 3-Dimethylbutane. Vapor Heat Capacity and Heat of Vaporization of 2-Methylbutane.
Scott DW, et al.
Journal of the American Chemical Society, 73(4), 1707-1712 (1951)
Eagleson M.
Concise Encyclopedia Chemistry, 560-560 (1994)
Johnson AW.
Invitation to Organic Chemistry., 50-54 (1999)
Kinetics of liquid-phase hydrogenation of isooctenes on a Pd/?-alumina catalyst.
Sarkar A, et al.
AIChE Journal, 52(3), 1142-1156 (2006)
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