Registration Dossier
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EC number: 248-372-5 | CAS number: 27253-30-1
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
In the assessment of lithium neodecanoate, read-across to the assessment entities lithium cations and neodecanoate anions is applied since the ions of lithium neodecanoate determine its fate and toxicity in the environment.
Regarding the short-term toxicity of lithium ions to aquatic invertebrates, a 48-h EC50 of 6.24 mg lithium/L was derived for Daphnia magna based on a study with a soluble lithium salt (Li2CO3).
Regarding neodecanoate, based on a reliable OECD 202 equivalent study, the 48-h EL50 for D. magna is > 457 mg/L neodecanoic acid.
Thus, lithium neodecanoate has a low potential for short-term toxicity to aquatic invertebrates.
Key value for chemical safety assessment
Additional information
In addition, toxicity data on lithium ions are available from studies rated “reliable 3” due to methodological deficiencies. Soluble lithium salts (Li2SO4, LiCl) were tested resulting in a 48-h EC50 for Daphnia magna (mobility) of 2.62 mg Li/L, a 24-h EC50 of 24.85 mg Li/L for Daphnia magna neonates (mobility) and a 6-d LC50 of 6.26 mg Li/L for Heterocypris incongruens (mortality), further indicating a low toxicity of lithium ions to aquatic invertebrates.
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