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Sigma-Aldrich

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
Beilstein:
1730723
EC Number:
201-142-8
MDL number:
MFCD00009338
UNSPSC Code:
12352001
PubChem Substance ID:
57648270
NACRES:
NA.21
grade:
anhydrous
bp:
30 °C (lit.)
vapor pressure:
11.17 psi ( 20 °C)
Pricing and availability is not currently available.

grade

anhydrous

Quality Level

100

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

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Application

2-Methylbutane undergoes catalytic dehydrogenation in the presence of chromia-alumina catalyst to form isoamylenes, which can undergo further dehydrogenation to form isoprene.[1] It may also be used as a solvent in the preparation of trans-Bis(triethylphosphine) (hydroxy carbonyl) (phenyl) platinum(II), a metallacarboxylic acid.[2]

Signal Word

Danger

Hazard Statements

H224,H304,H336,H411

Hazard Classifications

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

Target Organs

Central nervous system

Supplementary Hazards

EUH066

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

-59.8 °F - closed cup

Flash Point(C)

-51 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
SHBS6134
SHBS4004
SHBR8755
SHBR5911
SHBR4178

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Power efficient synthesis of isoprene via two-stage dehydrogenation of isopentane
Karimov OK &amp; Daminev RR
World Applied Sciences Journal , 24(3), 320-325 (2013)
Yiming Huang et al.
Transplantation, 89(6), 677-685 (2010-01-30)
The role of bone marrow (BM)-derived cells in pancreatic beta-cell regeneration remains unresolved. We examined whether BM-derived cells are recruited to the site of moderate pancreatic injury and contribute to beta-cell regeneration. Low-dose streptozotocin (STZ) treatment was used to induce
Synthesis, x-ray structural analysis, and thermal decomposition of the platinum (II) carboxylic acid (hydroxycarbonyl) trans-Pt (CO2H)(C6H5)(PEt3) 2. Formation of a diplatinum (II) complex containing carbon dioxide
Bennett MA, et al
Journal of the American Chemical Society, 110(21), 7098-7105 (1988)
Johnson AW.
Invitation to Organic Chemistry., 338-338 (1999)
Johnson AW.
Invitation to Organic Chemistry., 50-54 (1999)
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Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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