2,4-D

CAS RN: 94-75-7

Volatilization

The Henry's Law constant for 2,4-D is 0.75X10-8 atm-cu m/mole(1). This Henry's Law constant indicates that 2,4-D is expected to be essentially nonvolatile from water and moist soil surfaces(2). 2,4-D is not expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 1.4X10-7 mm Hg(1).
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