| Identification | More | [Name]
2-Methyl-2-butene | [CAS]
513-35-9 | [Synonyms]
2-METHYL-2-BUTENE
2-METHYLBUTENE-2
AMYLENE
BETA-ISOAMYLENE
ISOAMYLENE
N-AMYLENE
PENTENE
TRIMETHYLETHYLENE
(CH3)2C=CHCH3
1,1,2-Trimethylethylene
2-Butene,2-methyl-
2-Mdethyl-2-butene
2-methyl-2-buten
2-Methylbut-2-ene
3-Methyl-2-butene
alpha,eta-amylene
Ethylene, trimethyl-
Methyl butene
trimethyl-ethylen
trimethylethylene[qr] | [EINECS(EC#)]
208-156-3 | [Molecular Formula]
C5H10 | [MDL Number]
MFCD00009276 | [Molecular Weight]
70.13 | [MOL File]
513-35-9.mol |
| Chemical Properties | Back Directory | [Appearance]
liquid with unpleasant odour (detection limit ca. 2 ppt)
| [Melting point ]
-134 °C (lit.) | [Boiling point ]
35-38 °C (lit.) | [density ]
0.835 g/mL at 25 °C
| [vapor density ]
2.4 (vs air)
| [vapor pressure ]
25.7 psi ( 55 °C)
| [refractive index ]
n20/D 1.385(lit.)
| [RTECS ]
EM7580000 | [Fp ]
−4 °F
| [storage temp. ]
Flammables area | [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. | [Specific Heat Capacity]
Cp(liquid):152.8J/(g·K),at 25℃ | [Merck ]
14,607 | [BRN ]
1361353 | [Henry's Law Constant]
5.7×10-5 mol/(m3Pa) at 25℃, Brockbank (2013) | [Dielectric constant]
2.1（20℃） | [Stability:]
Volatile | [InChI]
1S/C5H10/c1-4-5(2)3/h4H,1-3H3 | [InChIKey]
BKOOMYPCSUNDGP-UHFFFAOYSA-N | [SMILES]
C\C=C(\C)C | [LogP]
2.67 | [Uses]
Organic synthesis, hydrogenation, halogenation, alkylation, condensation reactions. | [CAS DataBase Reference]
513-35-9(CAS DataBase Reference) | [NIST Chemistry Reference]
2-Butene, 2-methyl-(513-35-9) | [EPA Substance Registry System]
513-35-9(EPA Substance) |
| Safety Data | Back Directory | [Symbol(GHS) ]
   
GHS02,GHS07,GHS08,GHS09 | [Signal word ]
Danger | [Hazard statements ]
H224-H302-H304-H336-H341-H411 | [Precautionary statements ]
P201-P210-P273-P301+P310+P331-P308+P313-P403+P233 | [Hazard Codes ]
F,Xn,N,F+ | [Risk Statements ]
R11:Highly Flammable.
R22:Harmful if swallowed.
R65:Harmful: May cause lung damage if swallowed.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R12:Extremely Flammable.
R36/37/38:Irritating to eyes, respiratory system and skin .
R19:May form explosive peroxides. | [Safety Statements ]
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S9:Keep container in a well-ventilated place .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S33:Take precautionary measures against static discharges .
S16:Keep away from sources of ignition-No smoking .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . | [RIDADR ]
UN 2460 3/PG 2
| [WGK Germany ]
3
| [TSCA ]
Yes | [REACH Registrations]
Inactive | [HazardClass ]
3 | [PackingGroup ]
II | [HS Code ]
29012900 | [Storage Class]
3 - Flammable liquids | [Hazard Classifications]
Acute Tox. 4 Oral
Aquatic Chronic 2
Asp. Tox. 1
Flam. Liq. 1
Muta. 2
STOT SE 3 | [Hazardous Substances Data]
513-35-9(Hazardous Substances Data) |
| Raw materials And Preparation Products | Back Directory | [Raw materials]
Isoprene-->3-Methyl-1-butene-->C5 Fraction-->p-tert-amyl aniline-->3,3-Dimethylcyclobutene-->1,1-dimethylcyclobutane-->1,2,4-Trimethylbenzene-->2-Butene-->2-Methyl-1-butene-->cis-1,3-Pentadiene | [Preparation Products]
Triadimefon-->β-Carotene-->pinacolone，tert-butyl methy1 ketone，3，3-dimethyl-2-butyl ketone-->N,N-DiMethylMethyleneaMMoniuM Iodide-->2,2-Dimethylbutyric acid-->cis-3,4-Dimethyl-2-pentene-->3,4,4-Trimethylcyclopent-2-enone-->1,1,2,3,3-pentamethylindan-->3-Ethyl-2-pentene-->2-Methyl-2-pentene-->2-Methyl-2-butanethiol |
| Hazard Information | Back Directory | [General Description]
A clear colorless liquid with a petroleum-like odor. Flash point less than 20°F. Less dense than water and insoluble in water. Hence floats on water. Vapors heavier than air. | [Reactivity Profile]
2-METHYL-2-BUTENE(513-35-9) 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. | [Air & Water Reactions]
Highly flammable. Insoluble in water. | [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. | [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]
liquid with unpleasant odour (detection limit ca. 2 ppt)
| [Definition]
ChEBI: 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. | [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. | [Toxics Screening Level]
The initial threshold screening level (ITSL) for amylene (also called 2-methyl-2-butene) is 106 μg/m3 (annual averaging time). | [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 |
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