Registration Dossier

Administrative data

Endpoint:
Henry's law constant
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
1.10.1984 - 1.12.1985

Data source

Referenceopen allclose all

Reference Type:
study report
Title:
Unnamed
Year:
1985
Report Date:
1985
Reference Type:
study report
Title:
Unnamed
Year:
1982
Report Date:
1982
Reference Type:
publication
Title:
Determination of air-water Henry's law constants for hydrophobic pollutants
Author:
Mackay, D., Shiu, W.Y., Sutherland, R.P.
Year:
1979
Bibliographic source:
Environ. Sci. Technol. 13, 333-337

Materials and methods

Principles of method if other than guideline:
The test protocols used to evaluate the transport and transformation of the subject chemicals have been described by Mill et al. (1982). These protocols, developed in SRI International laboratory, include hydrolysis, photolysis, and chemical oxidation in water; atmospheric chemistry; aquatic biotransformation; volatilization; and sorption of organics in sediment and soil.
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Henry's Law constant H
H:
0 dimensionless
Temp.:
25 °C

Any other information on results incl. tables

No loss (<5%) of DEGDN from the aqueous phase was observed after 10 days of purging, from which was calculated Hc to be ≤ 0.02 Torr or 10-6(dimensionless). The value calculated from the aqueous solubility (0.020 M) and vapour pressure (0.0059 Torr) at 25°C is 0.30 torr/M. These low values of Hc indicate that volatization will be extremely slow in the environment.

Applicant's summary and conclusion

Conclusions:
Thelow value of Hc indicates that volatization will be extremely slow in the environment.