ChemicalBook > CAS DataBase List > 2-Methyl-2-butene

2-Methyl-2-butene

Product Name
2-Methyl-2-butene
CAS No.
513-35-9
Chemical Name
2-Methyl-2-butene
Synonyms
2-Methylbut-2-ene;PENTENE;ISOAMYLENE;AMYLENE;3-Methyl-2-butene;N-AMYLENE;2-Mdethyl-2-butene;Isoamylenes;b-Isoamylene;Methyl butene
CBNumber
CB6853712
Molecular Formula
C5H10
Formula Weight
70.13
MOL File
513-35-9.mol
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2-Methyl-2-butene Property

Melting point:
-134 °C (lit.)
Boiling point:
35-38 °C (lit.)
Density 
0.662 g/mL at 25 °C (lit.)
vapor density 
2.4 (vs air)
vapor pressure 
25.7 psi ( 55 °C)
refractive index 
n20/D 1.385(lit.)
RTECS 
EM7580000
Flash point:
−4 °F
storage temp. 
2-8°C
solubility 
Chloroform, Methanol (Slightly)
form 
Liquid
color 
Colorless
explosive limit
8.7%
Water Solubility 
Miscible with alcohol, benzene, ligroin, ethylene oxide and ether. Immiscible with water.
Merck 
14,607
BRN 
1361353
Dielectric constant
2.1（20℃）
Stability:
Volatile
LogP
2.67
CAS DataBase Reference
513-35-9(CAS DataBase Reference)
NIST Chemistry Reference
2-Butene, 2-methyl-(513-35-9)
EPA Substance Registry System
2-Methyl-2-butene (513-35-9)
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Safety

Hazard Codes 
F,Xn,N,F+
Risk Statements 
11-22-65-51/53-12-36/37/38-19-68-67-38-52/53-40-36/37
Safety Statements 
45-9-61-33-16-36/37/39-26-62-36/37
RIDADR 
UN 2460 3/PG 2
WGK Germany 
3
TSCA 
Yes
HazardClass 
3
PackingGroup 
II
HS Code 
29012900
Hazardous Substances Data
513-35-9(Hazardous Substances Data)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H224Extremely flammable liquid and vapour

H302Harmful if swallowed

H304May be fatal if swallowed and enters airways

H336May cause drowsiness or dizziness

H341Suspected of causing genetic defects

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P201Obtain special instructions before use.

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P273Avoid release to the environment.

P308+P313IF exposed or concerned: Get medical advice/attention.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
86262
Product name
2-Methyl-2-butene
Purity
≥95.0% (GC)
Packaging
50mL
Price
$60.9
Updated
2024/03/01
Sigma-Aldrich
Product number
86262
Product name
2-Methyl-2-butene
Purity
≥95.0% (GC)
Packaging
250ML
Price
$137
Updated
2024/03/01
Sigma-Aldrich
Product number
86262
Product name
2-Methyl-2-butene
Purity
≥95.0% (GC)
Packaging
1L
Price
$433
Updated
2024/03/01
Sigma-Aldrich
Product number
379263
Product name
2-Methyl-2-butene
Purity
technical grade, 90%
Packaging
800ml
Price
$368
Updated
2024/03/01
Sigma-Aldrich
Product number
304042
Product name
2-Methyl-2-butene solution
Purity
2.0 M in THF
Packaging
100ml
Price
$70.1
Updated
2023/01/07
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2-Methyl-2-butene Chemical Properties,Usage,Production

Description

2-Methyl-2-butene (also named as Amylene) is an alkene hydrocarbon with the molecular formula C5H10. It is a colorless to pale yellow clear liquid. It can be used as a free radical scavenger in trichloromethane and dichloromethane. It was used for the alkylation of 3-methylthiophene over a zeolitic catalyst. It was also used as a precursor of peroxyacetyl nitrate for calibration purpose.

Chemical Properties

2-Methyl-2-butene is a colorless volatile liquid with unpleasant odour (detection limit ca. 2 ppt) . soluble in alcohol, ether, benzene, insoluble in water. It is used in organic synthesis, hydrogenation, halogenation, alkylation, condensation reactions.

Uses

2-Methyl-2-butene is used to prepare 3-Brom-2.3-dimethyl-1.1-dicyan-butan in the presence of 2,2'-azobis-(2,4-dimethyl-4-methoxyvaleronitrile) as a catalyst. It may be employed as precursor for peroxyacetyl nitrate for the calibration purposes.

Definition

ChEBI: 2-Methyl-2-butene is an alkene that is ethylene in which three of the hydrogens are replaced by methyl groups.

Preparation

2-methyl-2-butene is prepared by dehydration of tert-amyl alcohol in presence of p-toluenesulfonic acid or distillation of a catalytically cracked gasoline stream, followed by extraction with aqueous sulfuric acid at low temp.

General Description

2-methyl-2-butene appears as a clear colorless liquid with a petroleum-like odor. Less dense than water and insoluble in water. Hence floats on water. Vapors heavier than air.

Air & Water Reactions

Highly flammable. Insoluble in water.

Reactivity Profile

2-Methyl-2-butene may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release gaseous hydrogen. In the presence of various catalysts (such as acids) or initiators, may undergo exothermic polymerization reactions.

Hazard

Highly flammable, dangerous fire and explosion risk.

Health Hazard

Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.

Purification Methods

Distil amylene and collect the distillate at low temperature. It has also been distilled from sodium. FLAMMABLE. It is available in steel cylinders and has a short

Research

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.

References

Virginie Bellière, Christophe Geantet, Michel Vrinat, Younès Ben-Taarit, Yuji Yoshimura, Alkylation of 3-Methylthiophene with 2-Methyl-2-butene over a Zeolitic Catalyst, Energy & Fuels, 2004, vol. 18, pp. 1806-1813
D. Grosjean, Gas-phase reaction of ozone with 2-methyl-2-butene: dicarbonyl formation from Criegee biradicals, Environmental Science & Technology, 1990, vol. 24, pp. 1428-1432

2-Methyl-2-butene Preparation Products And Raw materials

Raw materials

3-Methyl-1-butene C5 Fraction Isoprene

Preparation Products

β-Carotene N,N-DiMethylMethyleneaMMoniuM Iodide Triadimefon pinacolone，tert-butyl methy1 ketone，3，3-dimethyl-2-butyl ketone
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View Lastest Price from 2-Methyl-2-butene manufacturers

Hebei Yanxi Chemical Co., Ltd.
Product
2-Methyl-2-butene 513-35-9
Price
US $20.00-1.00/kg
Min. Order
1kg
Purity
0.99
Supply Ability
20 tons
Release date
2023-09-18
Hebei Weibang Biotechnology Co., Ltd
Product
2-Methyl-2-butene 513-35-9
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2022-10-13
Henan Fengda Chemical Co., Ltd
Product
2-Methyl-2-butene 513-35-9
Price
US $100.00-1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
g-kg-tons, free sample is available
Release date
2023-12-25

513-35-9, 2-Methyl-2-buteneRelated Search:

Isovaleric acid 3,3-Dimethylacrylic acid Maleic acid Fumaric acid CIS-BUTENEDIOIC ANHYDRIDE Thiophanate-methyl Bensulfuron methyl Methyl acrylate 3-SULFOLENE Methylparaben Amytal sodium ISOAMYL NITRATE 3-Methyl-1-butanol 2-Methyl-2-butanol Isoamyl nitrite ISOVALERIC ANHYDRIDE Methyl acetate Cyclopentene Methyl Butene

  • 2-METHYLBUTENE-2
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  • 2-METHYL-2-BUTENE, TECH., 90%
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  • 2-Methyl-2-butene, =99%, purified by redistillation
  • 2-Methyl-2-butene,86%
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  • Isoamylenes
  • 2-METHYL-2-BUTENE MIN 88%
  • 2-Methyl-2-butene, 99+%
  • 2-Methyl-2-butene, balance 2-Methyl-1-butene, 90%
  • Androstenedoine
  • 2-methyl-2-butene solution
  • 2-METHYL-2-BUTENE 95+%
  • β-Isoamylene, Amylene
  • b-Isoamylene
  • 2-Methyl-2-butene, 90%, balance 2-methyl-1-butene
  • 2-Methylbutane-2-ene
  • 2-Methyl-2-butene, tech. 90%, remainder mainly 2-methyl-1-butene
  • 2-Methyl-2-butene,2M solution in THF
  • 2-Methyl-2-butene,β-Isoamylene, Amylene
  • 2-Methyl-2-butene, 2M solution in THF, AcroSeal
  • 2-Methyl-2-butene, 99+% 25ML
  • Amylene Pentene
  • 2-Methyl-2-butene >=95.0% (GC)
  • 2-Methyl-2-butene solution 2.0 M in THF
  • 2-Methyl-2-butene, technical, 90%, remainder mainly 2-methyl-1-butene
  • (CH3)2C=CHCH3
  • 1,1,2-Trimethylethylene
  • 2-Butene,2-methyl-
  • 2-Methyl-2-butene technical grade, 90%
  • 2-Methyl-2-butene &gt
  • 2-Methyl-2-butene ISO 9001：2015 REACH
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  • 2-Methyl-2-butene, 2M solution in THF, AcroSeal&trade
  • 2-Methyl-2-butene,90%
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  • 513-35-9
  • 513359
  • CH3CHCCH32