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EC number: 266-041-3
CAS number: 65997-06-0
category rosin, hydrogenated rosin and their salts contains rosin and
monovalent and divalent salts of rosin, as well as hydrogenated variants
of these. Rosin and rosin salts are UVCB substances and the main
constituents for all category members are resin acids. Oligomers of
resin acids (mainly dimers) can also be present in rosin and rosin salts
biodegradation studies are available for a number of different category
members, covering rosin, monovalent and divalent salts of rosin and
hydrogenated variants. Although there is some variation in the amount of
degradation demonstrated in these studies, likely to be due to the low
solubility of the test items and difficulties with ensuring
bioavailability of the test item, the weight of evidence demonstrates
that substances in this category are readily biodegradable and therefore
not persistent or very persistent. An enhanced ready biodegradation
study and an inherent biodegradation study are also available for
category members, and also indicate that these substances are unlikely
to be persistent. Based on measured biodegradation data, substances in
the category rosin, hydrogenated rosin and their salts are not
considered to be persistent.
BCF values are available for nine resin acids, with values ranging from
23 to 129. Resin acids are the main constituents in rosin and rosin
salts, and these BCF values are far below the bioaccumulation threshold,
therefore rosin and rosin salts are not considered to be
bioaccumulative. In addition, QSAR predictions have been conducted for a
representative structure of rosin dimers and based on the predictions
these constituents are considered to have a low potential for
bioaccumulation due to their large molecular size and very high log Kow
(log Kow >10), meaning that they are unlikely to be taken up by
organisms. Overall, members of the category rosin and rosin salts are
not considered to be bioaccumulative.
ecotoxicity results are available for members of the rosin and rosin
salts category, covering rosin, monovalent and divalent salts of rosin
and hydrogenated variants. The lowest LC50 value is 1.6 mg/L forDaphnia
magna(Eastman 2005), for category member resin acids and rosin
acids, hydrogenated, potassium salts. Members of this category have not
been classified as Carcinogenic Cat 1A or 1B, mutagenic Cat 1A or 1B,
Toxic to reproduction cat 1A, 1B or 2 or STOT-RE cat 1, Cat 2. Based on
the toxicity data available for category members, members of the
category rosin and rosin salts are not considered to be toxic.
assessments were conducted by the Finnish competent authority for
category members rosin, rosin, hydrogenated and resin acids and rosin
acids, sodium salts (Tukes 2015). The assessments state that the
conclusions can, in principle, be applied to all members of the
category. Tukes based their assessment on the available measured data
and EPISuite predictions conducted based on abietic, isopimaric and
neoabietic acids, as representative structures. The assessments conclude
that “the substance is not considered to meet the PBT/vPvB criteria
based on the available, mainly screening level, information. This
conclusion covers the relevant constituents.”
members of the category rosin, hydrogenated rosin and their salts are
not considered to be PBT or vPvB.
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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