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EC number: 266-040-8
CAS number: 65997-04-8
Adducts and Rosin Adducts Salts substances are UVCB substances made up
of constituents with different properties, which will behave differently
when released to the environment. Standard biodegradation studies are
not really appropriate for whole substance UVCBs and therefore as much
is reasonably practicable, biodegradation of the individual consituents
as a whole needs to be considered. In order to prioritise the
consituents that may require further testing a PBT screening assessment
of Rosin Adducts and Rosin Adducts Salts substances was undertaken. The
logic being that if a consituent is both Persistent and Bioaccumulative
then further testing on these constituents would be required.
for mono-constituents is available from ECHA; however, for complex
substances such as Unknown or Variable Composition, Complex reaction
products or Biological materials (UVCBs) there is currently little
guidance on how the PBT/vPvB assessment should be conducted. A pragmatic
approach for UVCBs is to evaluate all the individual constituents
present in the substance at a concentration of ≥0.1% for their PBT
this is a UVCB substance it is not possible to identify every single
constituent at a concentration of 0.1% (which numbers thousands)and
detailed analysis of each individual constituent within the substance is
not available. As such, a list of representative constituents has been
developed from information in the Substance Identity Profiles. All
identified representative constituents were assessed individually for
their P and B properties.
Following the Screening assessment, the data
gathered suggests that whilst conclusions on Persistence cannot be drawn
forthe constituents where data are from QSARs alone, none of the
constituents are expected to be Bioaccumulative. Four of the
constituents (Neutral Aldehydes) were predicted to potentially be B/vB
but these have experimental data to show they are not P, therefore are
not PBT/vPvB. It is noted that, even if the data on bioaccumulation is
mostly from QSARs for this substance, the models used are reliable, well
documented and well known and fit these types of constituents, even
those substances that have a higher Kow than the training data set. The
Predicted BCF values in both models were much lower than the 2000 L/kg
criterion for B in the Regulation and therefore there is high confidence
that there are no constituents of concern in this substance. As none of
the constituents are both P and B then none have been identified as
consituents of concern and therefore do not need to be taken forward for
further simulation studies.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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