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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

Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Administrative data

Link to relevant study record(s)

Description of key information

Earthworm toxicity, 1 key study,  14-d NOEL > 1000 mg/kg soil (nominal) for the submission substance (OECD 207 TG)
Earthworm toxicity, read-across, 1 key study, NOEL >1000 mg/kg soil (nominal) for Synesstic 5, structurally related alkylnaphthalene surrogate (OECD 207 TG)

Key value for chemical safety assessment

Short-term EC50 or LC50 for soil macroorganisms:
1 000 mg/kg soil dw

Additional information

The short-term soil macroorganism toxicity testing has been carried out with the submission substance. Results from a 14-day earthworm study (OECD 207 study guidelines) show that submission substance does not cause any toxicity at the highest soil concentrations tested (1000 mg/kg nominal) (Key Lab, 2010). The 14-day LL50 and 14-day NOEL values were greater than 1000 mg/kg soil dw with no mortality or adverse effects observed.  


Similar 14-day earthworm toxicity studies with a structurally related alkylated naphthalene material (i.e., Synesstic 5, aka reaction products of 1- hexadecene and naphthalene)(ExxonMobil Biomedical Sci. 2009) also indicate no mortality to earthworms.  Synesstic 5 did not cause any mortality to earthworms at the highest tested loading at 1000 mg/kg in soil.  The 14-day LL50 and 14-day NOEL were both greater than 1000 mg/kg soil (nominal loadings).   


Collectively, these findings indicate that the submission substance and related alkylated naphthalene surrogates are not acutely toxic to earthworms under the conditions of the OECD 207 test.