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EC number: 614-523-2
CAS number: 68475-37-6
Rosin ester substances are UVCB substances made up of constituents
with different properties, which will behave differently when released
to the environment. The PBT assessment of rosin ester substances
therefore considers the PBT potential of each of the constituents,
rather than the substance as a whole.
Rosin ester substances consist of esters of rosin, and
non-esterified resin acids. The rosin esters can be mono-, di-, tri- or
tetra-esters depending on the alcohol and the production process.
Methanol can form mono-esters, ethylene glycol, diethylene glycol and
triethylene glycol can form mono- and di- esters, glycerol can form
mono-, di- and tri-esters and pentaerythritol can form mono-, di-, tri-
and tetra-esters. In each case, the esterification reaction results in a
UVCB containing esters with varying numbers of ester bonds formed by the
reaction of the various resin acids with the alcohol. In addition,
non-esterified resin acids will also remain as constituents in the UVCB.
Detailed analysis of each individual constituent within the category is
not available and so a list of constituents thought to be present has
been developed from information in the Substance Identity Profiles for
each substance. All identified constituents were assessed individually
for their PBT properties.
There is little experimental data on Persistence (P) and Bioaccumulation
(B) of the registered substance or its individual constituents. Two
members of this category are currently being assessed under the
Community Rolling Action Plan (CoRAP) Resin acids and rosin acids,
hydrogenated, esters with glycerol (CAS No: 65997-13-9) andResin
acids and rosin acids. hydrogenated, esters with pentaerythritol (CAS
No: 64365-17-9). Previously, the monoesters of these two substances were
identified as potentially being PBT. As such, an OECD 310 on the
Monoesters of Hydrogenated Rosin with Glycerol was undertaken with
additional analytical support to prove that it is not Persistent and
therefore Not PBT/vPvB. A similar study is currently underway to show
that the Monoesters of Hydrogenated Rosin with Pentaerythritol is not
The previous PBT assessments submitted for
this Category have been updated. As part of this update, all the
blocks of constituents listed in the Substance Identity Profile for
substances in this category have been included and at least 1
representative structure has been identified for each block. The
previous QSARs have also been re-run to ensure they are up to date and
The consituents assessed and the conclusion is presented in the table
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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