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D151602

Sigma-Aldrich

2,3-Dimethylbutane

98%

Synonym(s):

Diisopropyl

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About This Item

Linear Formula:
(CH3)2CHCH(CH3)2
CAS Number:
79-29-8
Molecular Weight:
86.18
Beilstein:
1730737
EC Number:
201-193-6
MDL number:
MFCD00008925
UNSPSC Code:
12352100
PubChem Substance ID:
24893466
NACRES:
NA.22
Pricing and availability is not currently available.

vapor density

3 (vs air)

vapor pressure

4.54 psi ( 25.0 °C)(lit.)

Assay

98%

form

liquid

autoignition temp.

788 °F

expl. lim.

~7.7 %

refractive index

n20/D 1.375 (lit.)

bp

58 °C (lit.)

mp

−129 °C (lit.)

density

0.662 g/mL at 25 °C (lit.)

SMILES string

CC(C)C(C)C

InChI

1S/C6H14/c1-5(2)6(3)4/h5-6H,1-4H3

InChI key

ZFFMLCVRJBZUDZ-UHFFFAOYSA-N

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General description

2,3-Dimethylbutane can can undergo hydrogenolysis over supported catalysts of ruthenium, nickel, cobalt, and iron to form smaller hydrocarbons, mainly methane.[1]

Application

  • Synthesis, structure, and properties of the condensation product of hexaoxocyclohexane with 2, 3-bis (hydroxyamino)-2, 3-dimethylbutane: Discusses the chemical synthesis and structural analysis of a novel compound derived from hexaoxocyclohexane and 2,3-dimethylbutane (EV Tretyakov, AO Tkacheva, 2014).
  • Catalysts by design - Surface organometallic chemistry on oxide and metal for dehydrogenation of 2, 3-dimethylbutane: This paper details the development of a selective catalyst system for the dehydrogenation of 2,3-dimethylbutane, emphasizing the stability and efficiency of the catalyst (P Rouge, A Garron, S Norsic, C Larabi, N Merle, 2019).

Signal Word

Danger

Hazard Statements

H225,H304,H315,H336,H411

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

-20.2 °F - closed cup

Flash Point(C)

-29 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
SHBS2218
SHBS4372
SHBR3532
SHBP3950
SHBN9358

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Hydrogenolysis of 2,3-dimethylbutane on supported ruthenium, nickel, cobalt, and iron.
Machiels CJ & Anderson RB
J. Catal., 58(2), 260-267 (1979)
Kinetic study of the photochlorination of 2, 3-dimethylbutane and other alkanes in solution in the presence of benzene. First measurements of the absolute rate constants for hydrogen abstraction by the" free" chlorine atom and the chlorine atom-benzene. pi.-complex. Identification of these two species as the only hydrogen abstractors in these systems.
Bunce NJ, et al.
Journal of the American Chemical Society, 107(19), 5464-5472 (1985)
Gas hydrate equilibria of 2, 3-Dimethylbutane and benzene with methane and nitrogen.
?stergaard KK, et al.
Chemical Engineering Research and Design, 78(5), 731-737 (2000)
Diffusion of benzene, toluene, naphthalene, and phenanthrene in supercritical dense 2, 3?dimethylbutane.
Sun CKJ & Chen SH
AIChE Journal, 31(11), 1904-1910 (1985)
2,3-Dimethylbutane. CAS# 79-29-8.
J B Galvin et al.
Journal of toxicology and environmental health. Part A, 58(1-2), 111-118 (1999-10-28)
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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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