Tris(2-Chloroethyl)amine

CAS RN: 555-77-1

Volatilization

The Henry's Law constant for tris(2-chloroethyl)amine is estimated as 1.85X10-5 atm-cu m/mole(SRC) derived from its vapor pressure, 0.011 mm Hg(1), and water solubility, 160 mg/l(1). This Henry's Law constant indicates that the neutral species of tris(2-chloroethyl)amine is expected to volatilize from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life of the neutral species from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 47 hours(SRC). The volatilization half-life of the neutral species from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 26 days(SRC). Tris(2-chloroethyl)amine's estimated Henry's Law constant(1) indicates that volatilization of the neutral species from moist soil surfaces may occur(SRC). Tris(2-chloroethyl)amine has a pKa of 4.64(3) and will exist primarily as the neutral species under neutral to basic conditions, but the protonated form of tris(2-chloroethyl)amine, may also be present under acidic environments. The protonated form of tris(2-chloroethyl)amine will not volatilize from water or moist soil surfaces(SRC). Tris(2-chloroethyl)amine is not expected to volatilize from dry soil surfaces(SRC) based upon its vapor pressure(1).
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