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: 812-724-1
CAS number: 106705-37-7
degradation is not relevant for strontium.Neodecanoic
acid has a potential for an indirect photochemical degradation, but due
to the limited exposure conditions, this process is negligible.
Furthermore, a direct photochemical degradation is unlikely since
neodecanoic acid does not absorb light wavelenghts within a range of 290
to 750 nm.Therefore,
abiotic degradation is not considered to be significant for strontium
carboxylates are substances consisting of a metal and a carboxylic acid.
Based on the solubility of strontium neodecanoate in water (8.47 g
dissolved Sr/L at pH 8.4 corresponding to 45.07 g strontium
neodecanoate/L), a complete dissociation of strontium neodecanoate
resulting in strontium and neodecanoate ions may be assumed under
environmental conditions. The
respective dissociation is reversible and the ratio of the salt
/dissociated ions is dependent on the metal-ligand dissociation constant
of the salt, the composition of the solution and its pH.
metal-ligand complexation constant of strontium neodecanoate could not
be identified. Data for alkaline earth metals appear to be generally
limited. However, alkaline earth metals tend to form complexes with
ionic character as a result of their low electronegativity. Further, the
ionic bonding of alkaline earth metals is typically described as
resulting from electrostatic attractive forces between opposite charges,
which increase with decreasing separation distance between ions.
on an analysis by Carbonaro & Di Toro (2007) of monodentate binding of
strontium to negatively-charged oxygen donor atoms, including carboxylic
functional groups, monodentate ligands such as neodecanoate are not
expected to bind strongly with strontium. Accordingly, protons will
always out-compete strontium ions for complexation of monodentate
ligands given equal activities of free strontium and hydrogen ions. The
metal-ligand formation constants (log KML) of strontium with
other carboxylic acids, i.e. acetic, propanoic and butanoic acid,
ranging from 0.78 to 0.89, further point to a low strength of the
monodentate bond between carboxyl groups and strontium.
it may reasonably be assumed that based on the estimated
strontium-neodecanoate formation constant, the respective behaviour of
the dissociated strontium cations and neodecanoate anions in the
environment determine the fate of strontium neodecanoate upon
dissolution with regard to (bio)degradation, bioaccumulation,
partitioning resulting in a different relative distribution in
environmental compartments (water, air, sediment and soil) and
subsequently its ecotoxicological potential.
in the assessment of the stability of strontium neodecanoate,
read-across to neodecanoic acid (CAS 26896 -20 -8; EC 248-093-9) and
soluble strontium substances is applied since the ions of strontium
neodecanoate determine the enviromental fate.
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