1,2-BUTADIENE

buta-1,2-diene

590-19-2

Methylallene

1-Methylallene

Allene, methyl-

1,2-butadien

Buta-1,2-dien

CH2=C=CH-CH3

2AZI943A8R

HSDB 5705

UNII-2AZI943A8R

Methylajoene

EINECS 209-674-2

EC 209-674-2

CH2=C=CHCH3

1,2-BUTADIENE [HSDB]

DTXSID5027225

CHEBI:39480

1,2-Butadiene, >=97.0%

MFCD00039911

1,2-Butadiene, >=99.0% (GC)

B0856

NS00002160

InChI=1/C4H6/c1-3-4-2/h4H,1H2,2H

Q161451

The Henry's Law constant for 1,2-butadiene is estimated as 0.097 atm-cu m/mole(SRC) using a fragment constant estimation method(1). This Henry's Law constant indicates that 1,2-butadiene is expected to volatilize rapidly from water surfaces(2). 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)(2) is estimated as 1 hour(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 70 hours(SRC). 1,2-Butadiene's estimated Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). The potential for volatilization of 1,2-butadiene from dry soil surfaces may exist based upon a vapor pressure of 1,260 mm Hg(3).

Using a structure estimation method based on molecular connectivity indices(1), the Koc for 1,2-butadiene can be estimated to be 24(SRC). According to a classification scheme(2), this estimated Koc value suggests that 1,2-butadiene is expected to have very high mobility in soil(SRC).