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220159

Sigma-Aldrich

2,3-Dimethyl-2-butene

≥99%

Synonyme(s) :

Tetramethylethylene

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243,00 $
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911,00 $

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25 ML
243,00 $
100 ML
911,00 $

About This Item

Formule linéaire :
(CH3)2C=C(CH3)2
Numéro CAS:
563-79-1
Poids moléculaire :
84.16
Beilstein:
1361357
Numéro CE :
209-263-8
Numéro MDL:
MFCD00008897
Code UNSPSC :
12352100
ID de substance PubChem :
24853167
Nomenclature NACRES :
NA.22

243,00 $

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Pression de vapeur

215 mmHg ( 37.7 °C)

Essai

≥99%

Forme

liquid

Température d'inflammation spontanée

754 °F

Indice de réfraction

n20/D 1.412 (lit.)

pb

73 °C (lit.)

Pf

−75 °C (lit.)

Densité

0.708 g/mL at 25 °C (lit.)

Température de stockage

2-8°C

Chaîne SMILES 

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

InChI

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

Clé InChI

WGLLSSPDPJPLOR-UHFFFAOYSA-N

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Catégories apparentées

Description générale

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].

Application

2,3-Dimethyl-2-butene was employed as substrate in photoinduced molecular transformations involving 2-hydroxy-1,4-naphthoquinones[4].

À utiliser avec

Réf. du produit
Description
Tarif

Pictogrammes

FlameHealth hazard
GHS02,GHS08

Mention d'avertissement

Danger

Mentions de danger

H225,H304

Conseils de prudence

P210 - P301 + P310 + P331

Classification des risques

Asp. Tox. 1 - Flam. Liq. 2

Code de la classe de stockage

3 - Flammable liquids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

17.6 °F - closed cup

Point d'éclair (°C)

-8 °C - closed cup

Équipement de protection individuelle

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

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Certificats d'analyse (COA)

Lot/Batch Number
SHBR8100
SHBN6703
SHBL0062
SHBH5043V
SHBH1200V

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

Sigma-Aldrich

406082

2,3,4-Trimethyl-2-pentene

3-Methyl-2-pentene, mixture of cis and trans 98%

Sigma-Aldrich

111775

3-Methyl-2-pentene, mixture of cis and trans

2-Methyl-2-butene ≥95.0% (GC)

Sigma-Aldrich

86262

2-Methyl-2-butene

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
Bridgett E Coleman et al.
The journal of physical chemistry. A, 114(48), 12667-12674 (2010-11-17)
The matrix isolation technique, combined with infrared spectroscopy and twin jet codeposition, has been used to characterize intermediates formed during the ozonolysis of 2,3-dimethyl-2-butene (DMB). Absorptions of early intermediates in the twin jet experiments grew up to 200% upon annealing
P Di Mascio et al.
Free radical biology & medicine, 12(6), 471-478 (1992-01-01)
Ultraweak chemiluminescence arising from lipoperoxidation has been attributed by several authors to the radiative deactivation of singlet oxygen and triplet carbonyl products. The latter emitters have been suggested to come from annihilation of RO. and ROO. radicals as well as
Relative reactivities of the excited states of furocoumarins for [2 + 2] photocycloaddition reaction with tetramethylethylene.
S C Shim et al.
Photochemistry and photobiology, 45(4), 453-458 (1987-04-01)
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Questions

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  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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