Registration Dossier

Administrative data

Endpoint:
distribution modelling
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Study period:
2013-03-25
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Level 1 fugacity modelling accorind to D. Mackay

Data source

Reference
Reference Type:
publication
Title:
Unnamed
Year:
1991

Materials and methods

Model:
calculation according to Mackay, Level I

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Percent distribution in media

Air (%):
2.53
Water (%):
37.57
Soil (%):
58.56
Sediment (%):
1.31
Susp. sediment (%):
0.041
Biota (%):
0

Applicant's summary and conclusion

Conclusions:
The distribution is calculated using a validated spreadsheet model. Results of this model are indicating the distribution without degradation after infinite equilibrium time. The degradation rate in these compartments may be different. But in the absence of any measured half-lifes in these compartments it is considered more suitable to use a level 1 calculation for the prediction of the possible compartments of concern.
Executive summary:

According to Mackay Level 1 distribution modelling will 1 -methylpiperazine partition for 58.6% to soil and for 37.6% to water.