Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 266-040-8
CAS number: 65997-04-8
An EL50 of >1000 mg/L was determined for
The EL50 for resin acids and rosin acids, maleated, calcium salts was
determined to be >100 mg/L.
The EC50 for resin acids and rosin acids, maleated, sodium salts was
determined to be >38 mg/L.
Differences in ecotoxicity have been observed between fumarated and
maleated category members. For this reason, read across between
fumarated and maleated substances is not used for ecotoxicity endpoints.
For fumarated substances, ecotoxicity endpoints and environmental
classification are assessed based on data for the substance itself,
where available, or based on read across from another fumarated rosin
substance. One set of PNECs has been derived to cover all fumarated
rosin substances, based on the most sensitive ecotoxicity result
available for any fumarated rosin substance.
The ecotoxicity of maleated substances is affected by the solubility of
the test item, with more soluble substances rosin, maleated and resin
acids and rosin acids, maleated sodium salts showing higher aquatic
toxicity compared to the poorly soluble substance resin acids and rosin
acids, maleated calcium salts. Therefore, ecotoxicity endpoints and
environmental classification of resin acids and rosin acids, maleated
calcium salts are completed based on data for the substance itself
rather than using read across from more soluble maleated substances.
However, PNECs have been derived based on pooled data, with one set of
PNECs derived to cover all maleated substances within the category. The
most sensitive result for any maleated rosin substance has been used as
the key value for PNEC derivation.
Algal data are available for some category members, and the results are
One GLP-compliant, guideline study is available for Rosin, fumarated
(Inveresk, 2002). The study used WAFs, with no analytical verification
of test concentrations. The EL50 was determined to be greater than the
highest test concentration, 1,000 mg/L.
No data are available for rosin, maleated for this endpoint. Data are
read across from resin acids and rosin acids, maleated sodium salts as
another partially soluble maleated rosin substance.
Resin acids and rosin acids, maleated sodium salts
A GLP-compliant study following OECD guideline 201 is available for
resin acids and rosin acids, maleated, sodium salts (Laus, 2013). The
study utilised WAF techniques with analytical verification based on DOC.
The test item was supplied as a 50% solution but results were based on
geometric mean measured concentrations. The EC50 for resin acids and
rosin acids, maleated, sodium salts is >38 mg/L, based on growth rate
and the NOEC is 8 mg/L.
Resin acids and rosin acids, maleated calcium salts
GLP-compliant study following OECD guideline 201 is available for resin
acids and rosin acids, maleated, calcium salts (Laus, 2013). Test
solutions were prepared as WAFs but measured test concentrations were in
the same range as controls based on analysis of DOC. Results are based
on nominal loading rates. The EL50 for resin acids and rosin acids,
maleated, calcium salts is >100 mg/L.
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.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again