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Sigma-Aldrich

2-Methyl-2-butene

≥95.0% (GC)

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Synonym(s):
β-Isoamylene, Amylene
Linear Formula:
CH3CH=C(CH3)2
CAS Number:
513-35-9
Molecular Weight:
70.13
Beilstein:
1361353
EC Number:
208-156-3
MDL number:
MFCD00009276
PubChem Substance ID:
57653087

vapor density

2.4 (vs air)

Quality Level

100

Assay

≥95.0% (GC)

form

liquid

expl. lim.

8.7 %

refractive index

n20/D 1.385 (lit.)
n20/D 1.388

bp

35-38 °C (lit.)

mp

−134 °C (lit.)

density

0.662 g/mL at 25 °C (lit.)

SMILES string

C\C=C(\C)C

InChI

1S/C5H10/c1-4-5(2)3/h4H,1-3H3

InChI key

BKOOMYPCSUNDGP-UHFFFAOYSA-N

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General description

2-Methyl-2-butene is a trisubstituted olefin. It acts as guest and forms stable solid host-guest complexes with self-assembled benzophenone bis-urea macrocycles. The impact of active chlorine on photo-oxidation of 2-methyl-2-butene was studied. Photosensitized oxidation of 2-methyl-2-butene adsorbed on internal framework of Na-ZSM-5 zeolite was studied. Gas-phase reaction of 2-methyl-2-butene with ozone has been investigated. Kinetics of liquid-phase alkylation of 3-methylthiophene with 2-methyl-2-butene on supported phosphoric acid has been reported.

2-methyl-2-butene undergoes ultraviolet irradiation, leading to the formation of trimethylene oxides.

Application

2-Methyl-2-butene may be employed as precursor for peroxyacetyl nitrate for the calibration purposes.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Asp. Tox. 1 - Flam. Liq. 1 - Muta. 2 - STOT SE 3

Target Organs

Central nervous system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

-4.0 °F

Flash Point(C)

-20 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

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Kinetics and mechanism of liquid-phase alkylation of 3-methylthiophene with 2-methyl-2-butene over a solid phosphoric acid.
Belliere V, et al.
Applied Catalysis. B, Environmental, 64(3), 254-261 (2006)
Light-catalyzed organic reactions. I. The reaction of carbonyl compounds with 2-methyl-2-butene in the presence of ultraviolet light
Buchi G, et al.
Journal of the American Chemical Society, 76, 4327-4331 (1954)
Light-catalyzed organic reactions. I. The reaction of carbonyl compounds with 2-methyl-2-butene in the presence of ultraviolet light
Buchi G, et al.
Journal of the American Chemical Society, 76, 4327-4331 (1954)
Mehdi Nabi et al.
Journal of AOAC International, 103(5), 1243-1249 (2020-11-27)
A simple, rapid, selective and sensitive sample preparation and derivatization method was performed for determination of bromate ions in water by means of dispersive liquid-liquid extraction (DLLE) by gas chromatography-electron capture detection (GC-ECD). This method is based on 2-methyl-2-butene derivatization
Gas-phase reaction of ozone with 2-methyl-2-butene: Dicarbonyl formation from Criegee biradicals.
Grosjean D.
Environmental Science & Technology, 24(9), 1428-1432 (1990)
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