Registration Dossier
Registration Dossier
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EC number: 932-051-8 | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The freshwater algae 72-hr EC50 for the reaction product Marlon ARL is 72 mg/L based on growth rate according to a 1993 OECD 201 Guideline study conducted under GLP. The corresponding NOEC is 1.5 mg/L.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 72 mg/L
- EC10 or NOEC for freshwater algae:
- 1.5 mg/L
Additional information
There are several additional key and supporting studies for the two read across substances that comprise the reaction product.
The 72-hr EC50 for CAS No. 12068-03-0 sodium toluenesulphonate is 150 mg/L based on growth (NOEC = 40 mg/L) baxed on a 1995 GLP Guideline study. There is one comparable duration study for CAS No. 68411-30-3 sodium 4-undecylbenzenesulfonate and two 96 hour studies with different algal species. The 72-hr EC50 (growth) for Scenedesmus is 47.3 mg/L in a 1992 GLP Guideline study. The 96-hr EC50 (cell density) for Selenastrum is 29 mg/L in a 1986 non-guideline study. The 96-hr EC50 (cell density) for Microcystis is 0.91 mg/L in a 1982 non-guideline study.
There are several additional supporting guideline studies for other hydrotropes and for linear alkylbenzenesulphonate.
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