2-METHYL-1-BUTENE

2-Methylbut-1-ene

563-46-2

2-Methylbutene

1-Isoamylene

1-Butene, 2-methyl-

2-Methylbutene-1

Butene, 2-methyl-

gamma-Isoamylene

.gamma.-Isoamylene

26760-64-5

C2H5C(CH3)=CH2

33C9Y0I55H

MFCD00009333

NSC-72414

60288-48-4

26969-60-8

UNII-F238I92ISV

Isopentenes

UNII-33C9Y0I55H

2-methyl butene

2-methyl-butene

HSDB 5695

2 -methyl butene

EINECS 209-250-7

EINECS 247-975-0

3-methyl-3-butene

NSC 72414

UN2459

METHYLBUTENES

2-methyl-1-butylene

EC 247-975-0

1-BUTENE,2-METHYL

2-Methyl-1-butene [UN2459] [Flammable liquid]

2-Methyl-1-butene, 98%

2-Methyl-1-butene, technical

F238I92ISV

DTXSID3052224

CHEBI:77915

DTXSID50209041

2-METHYLBUT-1-ENE [HSDB]

NSC72414

UN2371

AKOS009157996

UN 2459

2-Methyl-1-butene, analytical standard

DB-052896

DB-303595

Isopentenes [UN2371] [Flammable liquid]

M0174

NS00003710

D91286

Q27147526

InChI=1/C5H10/c1-4-5(2)3/h2,4H2,1,3H

The Henry's Law constant for 2-methyl-1-butene calculated from its vapor pressure, 610 mm Hg(1), and water solubility, 130 mg/l(2), is 0.43 atm-cu m/mole (SRC). This Henry's Law constant indicates that 2-methyl-1-butene should volatilize rapidly from water surfaces(3). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(3) is estimated as 2.4 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(3) is estimated as 3.3 days(SRC). 2-Methyl-1-butene's Henry's Law constant(1,2) indicates that volatilization from moist soil surfaces may occur(SRC). The potential for volatilization of 2-methyl-1-butene from dry soil surfaces exists based upon its vapor pressure of 610 mm Hg(1).
Literature: (1) Daubert TE, Danner RP; Data Compilation Tables of Properties of Pure Compounds NY, NY: Amer Inst for Phys Prop Data (1989) (2) Suzuki T; J Computer-aided Molecular Design 5: 149-66 (1991) (3) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990)

Sol in alcohol, ether, benzene
Literature: Lide, D.R. (ed.). CRC Handbook of Chemistry and Physics. 79th ed. Boca Raton, FL: CRC Press Inc., 1998-1999., p. 3-105
Literature: #In water, 130 mg/l @ 20 deg C.
Literature: Suzuki T et al; J Computer-aided Molecular Design 5: 149-66 (1991)

Using a structure estimation method based on molecular connectivity indices(1), the Koc for 2-methyl-1-butene can be estimated to be 68(SRC). According to a classification scheme(2), this estimated Koc value suggests that 2-methyl-1-butene is expected to have high mobility in soil.
Literature: (1) Meylan WM et al; Environ Sci Technol 26: 1560-67 (1992) (2) Swann RL et al; Res Rev 85: 17-28 (1983)