M32704

2-Methyl-2-butene

≥99%, purified by redistillation

• Synonym(s): β-Isoamylene, Amylene
• Linear Formula: CH₃CH=C(CH₃)₂
• CAS Number: 513-35-9
• Molecular Weight: 70.13
• Beilstein/REAXYS Number: 1361353
• EC Number: 208-156-3
• MDL number: MFCD00009276
• UNSPSC Code: 12352100
• PubChem Substance ID: 57654373
• NACRES: NA.22

Properties

• vapor density: 2.4 (vs air)
• Quality Level: 200
• vapor pressure: 25.09 psi ( 55 °C); 7.66 psi ( 20 °C)
• assay: ≥99%
• purified by: redistillation
• 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

Description

Application

2-Methyl-2-butene can be used:

• For the cross metathesis reaction to form compounds with prenyl-type double bonds: methyl 10-methylundec-9-enoate, 2-methylundec-2-ene and 8-prenylcoumarins.
• As a model of C5-branched alkene fuel to study the high-temperature kinetics of branched alkenes in a combustion environment.
• As an additive along with pyridine for partial hydrogenation of poly-ynes to form ω-hydroxy polyunsaturated fatty acids.

Safety Information

• pictograms: GHS02,GHS08,GHS07,GHS09
• signalword: Danger
• hcodes: H224,H302,H304,H336,H341,H411
• pcodes: P210 - P233 - P273 - P301 + P310 - P331 - P403 + P233
• 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: 3 - Flammable liquids
• wgk_germany: WGK 3
• flash_point_f: -4.0 °F
• flash_point_c: -20 °C
• ppe: Eyeshields, Faceshields, Gloves