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EC number: 307-276-4
CAS number: 97592-79-5
N-tallow alkyl derivates of 1,1'-[[3-[(3-aminopropyl)amino]propyl]imino]bis-2-Propanol adsorb firmly and completely to soil and are considered “immobile” or “non-mobile”.
The Koc of the UVCB “N-tallow alkyl derivates of
determined by the use of non experimental methods. As no single
computational model could be identified which would fit exclusively to
this task, the Koc eventually was calculated from the geometric mean of
the data generated by two individual approaches.
The computations all were based on the experimentally derived log
Kow > 6. The resulting log Koc is > 4.51 (Koc > 33’037 L/kg) and is
considered reliable as it is supported from models, which mostly are
based on real physical properties of the test item.
Concerning data interpretation of the resulting Koc, all available
data uniformly are pointing in one direction and clearly indicate that
has to be considered as “immobile” or “non-mobile” in soils or sediments
according to the scales of McCall et al (1981) or Hollis (1991)
respectively. These results are in accordance with the Full Public
Report STD/1254 (November 2007) of the Australian authorities “National
Industrial Chemicals Notification and Assessment Scheme” (NICNAS). Based
on data from analogue materials N-tallow alkyl derivates of
1,1'-[[3-[(3-aminopropyl)amino]propyl]imino]bis-2-Propanol were assessed
to adsorb ca. 100% to soils, while desorption is expected to affect
initially about 5% and about 0% after replacement of the desorption
For these reasons additional adsorption/desorption testing can not
be expected to reveal new results with any added value concerning the
risk assessment of this substance, thus additional studies on
adsorption/desorption shall be waived.
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