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EC number: 232-304-6
CAS number: 8002-26-4
A complex combination of tall oil rosin and fatty acids derived from acidulation of crude tall oil soap and including that which is further refined. Contains at least 10% rosin.
A Final Decision letter
(CCH-D-2114412576-50-01-F) was received for this substance on 09 July
2018 which requested further information on the PBT properties of the
Block 10 Aldehyde consituents in this substance. As a first step Abietal
was chosen to represent the Aldehyde Block 10 consituents and a ready
biodegradation study was comissioned and depending on the outcome of
that study the requirement for further testing for Persistence,
Bioaccumulation and Toxicity would not be required.
The results show that Abietal meets the
criteria in the OECD 301B to be labelled readily biodegradable e.g. at
least 60% biodegradation in 28 days. Meeting the 10-day window was not a
requirement according to both the ECHA Final Decision Letter and OECD
The test item is non-persistent, and
satisfies the criteria to be labelled readily biodegradable based on the
results obtained in the second experiment.
Therefore, no further work on the persistence
of DTO or its consituents is required.
No measured sediment biodegradation data are
available for constituents of DTO. An exposure assessment (Section 9)
using EUSES 2.1.1 has been performed. The modelhas
a very cautious approach to the estimation of biodegradation rate in the
environment which is based on the TGD requirements. However, the rates
are wholly unrealistic of what can reasonably be expected for
naturally-occurring substances of high intrinsic degradability,and
so a sediment half-life of 30 days has been set for all constituent
blocks of DTO. The significance of that decision is considered in
Section 9 of the CSR.
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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