Registration Dossier
Registration Dossier
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EC number: 939-600-0 | CAS number: 1471316-27-4
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
EL50 (48h) = 51 mg/L for Daphnia magna
LL50 (48h) > 1000 mg/L for Acartia tonsa
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 51 mg/L
Marine water invertebrates
Marine water invertebrates
- Effect concentration:
- 1 000 mg/L
Additional information
Since no data for Alcohols, C16-18 (even numbered) and C18 unsaturated, propoxylated, < 2.5 PO (CAS 70955-07-6) are available, the acute toxicity towards aquatic invertebrates is assessed on the basis of data from studies with two similar substances (iso-stearyl-ethoxylate, 2 EO, CAS 52292-17-8 and alkyl alcohol ethoxylate propoxylate C10 - 16, CAS 69227-22-1).
The key information derived from a study with iso-stearyl-ethoxylate (CAS 52292-17-8), which investigated the toxicity on Daphnia magna according to OECD guideline 202 and GLP (Wierich, 2000). The test conducted under static conditions and results in an EL50 of 51 mg/L. In the supporting study with alkyl alcohol ethoxylate propoxylate (CAS 69227-22-1) the toxicity on the marine Copepod Acartia tonsa was investigated in the framework of a harmonised ring test according to ISO/PARCOM guideline under GLP conditions (Hudson, 1998). A maximum response of 33% at 1000 mg/L is reported, thus the LL50 is > 1000 mg/L.
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