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379263

Sigma-Aldrich

2-Methyl-2-butene

technical grade, 90%

Synonym(s):

β-Isoamylene, Amylene

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About This Item

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
UNSPSC Code:
12352100
PubChem Substance ID:
57649728
NACRES:
NA.22

grade

technical grade

Quality Level

100

vapor density

2.4 (vs air)

vapor pressure

25.7 psi ( 55 °C)
7.95 psi ( 20 °C)

Assay

90%

form

liquid

expl. lim.

8.7 %

refractive index

n20/D 1.385 (lit.)

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 (β-Isoamylene, Amylene) is a trisubstituted olefin. It acts as guest and forms stable solid host-guest complexes with self-assembled benzophenone bis-urea macrocycles. The effect of active chlorine formulations on photodecomposition of 2-methyl-2-butene has been studied. Its reaction with ozone in gas-phase has been reported to afford carbonym derivatives.

Application

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

Recommended products

Brass hose adapter Z146811 or brass body mini gas regulator Z513539 is recommended.

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 Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

FSL

Group 4: Flammable liquids
Special flammables
Hazardous rank I

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

379263-800ML:
379263-BULK:
379263-100ML:
379263-VAR:

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Certificates of Analysis (COA)

Lot/Batch Number
SHBJ4386
SHBG5722V
SHBD5063V
SHBD0364V
SHBC7358V

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Dichloromethane anhydrous, ≥99.8%, contains 40-150 ppm amylene as stabilizer

Sigma-Aldrich

270997

Dichloromethane

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)
Michael F Geer et al.
The Journal of organic chemistry, 78(11), 5568-5578 (2013-05-16)
This manuscript investigates how incorporation of benzophenone, a well-known triplet sensitizer, within a bis-urea macrocycle, which self-assembles into a columnar host, influences its photophysical properties and affects the reactivity of bound guest molecules. We further report the generation of a
Yunseok Im et al.
The Science of the total environment, 409(13), 2652-2661 (2011-04-29)
Active chlorine comprising hypochlorite (OCl⁻), hypochlorous acid (HOCl) and chlorine (Cl₂) is the active constituent in bleach formulations for a variety of industrial and consumer applications. However, the strong oxidative reactivity of active chlorine can cause adverse effects on both
Charles K Westbrook et al.
The journal of physical chemistry. A, 119(28), 7462-7480 (2015-03-31)
Two experimental studies have been carried out on the oxidation of 2-methyl-2-butene, one measuring ignition delay times behind reflected shock waves in a stainless steel shock tube, and the other measuring fuel, intermediate, and product species mole fractions in a
Masataka Ikeda et al.
Scientific reports, 5, 15881-15881 (2015-10-31)
The heart has two major modalities of hypertrophy in response to hemodynamic loads: concentric and eccentric hypertrophy caused by pressure and volume overload (VO), respectively. However, the molecular mechanism of eccentric hypertrophy remains poorly understood. Here we demonstrate that the
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