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277258

2-Methylbutane

anhydrous, ≥99%

Synonym(s):

Isopentane

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About This Item

Linear Formula:
CH3CH2CH(CH3)2
CAS Number:
78-78-4
Molecular Weight:
72.15
UNSPSC Code:
12352001
NACRES:
NA.21
PubChem Substance ID:
57648270
EC Number:
201-142-8
Beilstein/REAXYS Number:
1730723
MDL number:
MFCD00009338
Assay:
≥99%
Grade:
anhydrous
Bp:
30 °C (lit.)
Vapor pressure:
11.17 psi ( 20 °C)
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grade

anhydrous

Quality Segment

vapor density

2.6 (vs air)

vapor pressure

11.17 psi ( 20 °C)

assay

≥99%

form

liquid

autoignition temp.

788 °F

expl. lim.

8.3 %

impurities

<0.001% water, <0.005% water (100 mL pkg)

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.)

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

General description

Our anhydrous solvents deliver exceptionally low water content, making them the ideal choice for moisture-sensitive laboratory applications. Packaged in the exclusive Sure/Seal™ septum bottle system, they are reliably protected against moisture ingress from first use to last drop. The innovative Sure/Seal™ closure combines an advanced plug-style liner with an airtight elastomer and crimp cap design to ensure consistent product integrity. Three unique liner materials provide optimal chemical compatibility across a broad range of solvents. Sure/Seal™ packaging is proven to maintain anhydrous conditions even after repeated punctures. With more than 70 products across all major solvent families, available in pack sizes from 100 mL to 2 L, the portfolio meets virtually every laboratory need. By choosing ready-to-use anhydrous solvents in Sure/Seal™ packaging, researchers eliminate the need for time-consuming and hazardous in-house solvent drying and distillation - saving time, reducing risk, and improving reproducibility.

Application

Anhydrous solvents in Sure/Seal™ packaging are essential wherever water contamination would compromise experimental results. They are widely used in moisture-sensitive applications such as organic synthesis - including Grignard reactions, organometallic chemistry, and catalysis - as well as in peptide, oligonucleotide, and pharmaceutical synthesis.

Legal Information

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

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Signal Word

Danger

Hazard Classifications

Aquatic Chronic 2 - Asp. Tox. 1 - Flam. Liq. 1 - STOT SE 3

Target Organs

Central nervous system

supp_hazards

EUH066

Storage Class

3 - Flammable liquids

WGK

WGK 2

Flash Point (°F)

-59.8 °F - closed cup

Flash Point (°C)

-51 °C - closed cup

PPE (personal protective equipment)

Eyeshields, Faceshields, Gloves

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