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EC number: 204-815-4
CAS number: 126-97-6
The Henry's Law constant for MeaTG estimated as 7.354*10-6 Pa*m3/mol (7.26*10-6 atm*m3/mol) indicates that MeaTG is expected to be essentially nonvolatile from water surfaces and that volatilization from moist soil surfaces may not occur.
Henry's Law constant were estimated according to the Handbook of
Chemical Property Estimation Methods (Lyman, 1990) using the measured
values of water solubility and vapour pressure of MeaTG.
Henry's Law constant [via Vp/Wsol estimate using the measured values
from section 4.6 and 4.8]:
7.257*10-11 atm*m3/mol (7.354*10-6 Pa*m3/mol)
0.00036 mm Hg (IUCLID section: 4.6)
1000 g/L (source: IUCLID section: 4.8)
Henry's Law constant for MeaTG estimated as 7.354*10-6 Pa-m3/mol
(7.257*10-11 atm*m3/mol) indicates that MeaTG is
expected to be essentially nonvolatile from water surfaces and that
volatilization from moist soil surfaces may not occur. MeaTG is not
expected to volatilize from dry soil surfaces based upon an estimated
vapour pressure of 0.048 Pa (3.6*10-4 mm Hg). The water
solubility of MeaTG is > 1000 g/L.
pKa of 3.8 for thioglycolic acid also indicates that volatilization from
water will not be an important environmental fate process as it will
exist predominately in the ionic form under environmental pHs.
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