Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Biodegradation in water: screening tests

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

According to Annex VII, Column 2 of Regulation (EC) 1907/2006 and ECHA guidance on IR & CSA, Chapter R.7B (February 2016; Version 3.0), a study of ready biodegradability does not need to be conducted if the substance is inorganic. Biodegradation testing is not relevant for metals and metal compounds, including strontium salts, that are inorganic.  Metal 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. Whereas the concept of biodegradation is not relevant for strontium ions, neodecanoate is not expected to be readily biodegradable based on results from a standard OECD ready biodegradation test guideline with neodecanoic acid (11% biodegradation in 28 d).

Thus, data available for the strontium cation and the neodecanoate anion indicate that biotic degradation in respective compartments do not contribute significantly to the fate of strontium neodecanoate in the environment.

Key value for chemical safety assessment

Additional information