Registration Dossier

Administrative data

Endpoint:
distribution modelling
Type of information:
migrated information: read-across based on grouping of substances (category approach)
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Although not a SIDS end point, this study is considered to be the best study of Koc for these carbon numbers.

Data source

Reference
Reference Type:
publication
Title:
Predicting the sorption of fatty alcohols and alcohol ethoxylates to effluent and receiving water.
Author:
van Compernolle R, McAvoy D, Sherren A, Wind T, Cano M L, Belanger S E, Dorn P B, Kerr K M
Year:
2006
Bibliographic source:
Ecotox. and Environ. Safety, 64(1): 61-74

Materials and methods

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Linear alcohols labelled with 14-C, radiochemical purity 99%

Results and discussion

Any other information on results incl. tables

Alcohol sorption coefficients showed some time dependence, reaching a plateau by 72 h. C15 was found to be an unexplained outlier. The 72 h 

results were:
        
C       12       14       15       16       18

Kd      3000±    8490±    3080±    23800    78700
          80      920      270     ±3200    ±5400

Koc     17980    50830      -    143000   471000

log Koc   4.25    4.71      -     5.15     5.67

These data (neglecting the C15) can be interpreted as a QSAR in the usual way as:

Log Koc = 0.11 + 0.77 log Kow

R2 = 0.994

The result is in line with typical QSARs of this type.

Applicant's summary and conclusion