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220159

Sigma-Aldrich

2,3-Dimethyl-2-buten

≥99%

Synonym(e):

Tetramethylethylen

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CHF 166.00
100 ML
CHF 589.00

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25 ML
CHF 166.00
100 ML
CHF 589.00

About This Item

Lineare Formel:
(CH3)2C=C(CH3)2
CAS-Nummer:
563-79-1
Molekulargewicht:
84.16
Beilstein:
1361357
EG-Nummer:
209-263-8
MDL-Nummer:
MFCD00008897
UNSPSC-Code:
12352100
PubChem Substanz-ID:
24853167
NACRES:
NA.22

CHF 166.00

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Dampfdruck

215 mmHg ( 37.7 °C)

Qualitätsniveau

100

Assay

≥99%

Form

liquid

Selbstzündungstemp.

754 °F

Brechungsindex

n20/D 1.412 (lit.)

bp

73 °C (lit.)

mp (Schmelzpunkt)

−75 °C (lit.)

Dichte

0.708 g/mL at 25 °C (lit.)

Lagertemp.

2-8°C

SMILES String

C\C(C)=C(\C)C

InChI

1S/C6H12/c1-5(2)6(3)4/h1-4H3

InChIKey

WGLLSSPDPJPLOR-UHFFFAOYSA-N

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Verwandte Kategorien

Allgemeine Beschreibung

2,3-Dimethyl-2-butene undergoes ozonolysis in dark to yield hydroxyl radical[1]. Reaction of ozone with 2,3-dimethyl 2-butene (DMB) has been investigated using a flow-tube interfaced to UV photoelectron spectrometer[2]. DMB forms adduct with thianthrene cation radical tetrafluoroborate at 0°C and -15°C[3].

Anwendung

Substrate in photoinduced molecular transformations involving 2-hydroxy-1,4-naphthoquinones.[4]

Zubehör

Produkt-Nr.
Beschreibung
Preisangaben

Piktogramme

FlameHealth hazard
GHS02,GHS08

Signalwort

Danger

H-Sätze

H225,H304

Gefahreneinstufungen

Asp. Tox. 1 - Flam. Liq. 2

Lagerklassenschlüssel

3 - Flammable liquids

WGK

WGK 3

Flammpunkt (°F)

17.6 °F - closed cup

Flammpunkt (°C)

-8 °C - closed cup

Persönliche Schutzausrüstung

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
SHBR8100
SHBN6703
SHBL0062
SHBH5043V
SHBH1200V

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1 of 3

2,3,4-Trimethyl-2-penten 96%

Sigma-Aldrich

406082

2,3,4-Trimethyl-2-penten

3-Methyl-2-penten, Mischung aus cis und trans 98%

Sigma-Aldrich

111775

3-Methyl-2-penten, Mischung aus cis und trans

2-Methyl-2-buten ≥95.0% (GC)

Sigma-Aldrich

86262

2-Methyl-2-buten

The Journal of Organic Chemistry, 58, 4614-4614 (1993)
Bing-Jun Zhao et al.
The Journal of organic chemistry, 71(10), 3737-3742 (2006-05-06)
Thianthrene cation radical tetrafluoroborate (Th*+ BF4-) has been found to add to 2,3-dimethyl-2-butene (DMB) at 0 degrees C and -15 degrees C. The adduct, 2,3-dimethyl-2,3-(5,10-thianthreniumdiyl)butane ditetrafluoroborate (12), was isolated at -15 degrees C, and its 1H NMR spectrum was recorded
Maryline Pflieger et al.
Environmental science & technology, 47(12), 6239-6246 (2013-05-15)
In order to investigate the heterogeneous oxidation kinetics of the herbicide terbuthylazine (TERB), a stable and reproducible generation system of "dark" hydroxyl radical in the gas phase was developed and optimized using a PTR-MS. TERB was adsorbed on silica particles
N Haga et al.
Photochemistry and photobiology, 61(6), 557-562 (1995-06-01)
The mechanism of photocycloaddition of 2'-deoxyuridine (1a) and thymidine (1b) to 2,3-dimethyl-2-butene (Bu) in acetonitrile by UV irradiation has been studied. The reciprocal quantum yield for the cycloaddition increased linearly with reciprocal concentrations of Bu in acetonitrile to give limiting
R Tolando et al.
Xenobiotica; the fate of foreign compounds in biological systems, 26(4), 425-435 (1996-04-01)
1. During anaerobic reductive incubation of liver microsomes, from either the pyridine- or phenobarbital-treated rat, with 1,1-dichloro-1-fluoroethane (HCFC-141b) in the presence of a NADPH-regenerating system, a time- and dose-dependent formation of reactive metabolites was detected as indicated by a depletion
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Questions

1–2 of 2 Questions  

  1. 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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  2. 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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