Registration Dossier
Registration Dossier
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EC number: 203-265-2 | CAS number: 105-05-5
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
ErC50 (72h) for freshwater algae (Pseudokirchnerella subcapitata): 1.9 mg/L (OECD TG 201; static)
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 1.9 mg/L
- EC10 or NOEC for freshwater algae:
- 0.6 mg/L
Additional information
There are two available results on toxicity to algae. Both of them were done following OECD Guideline 201. One of them (SIDS report, Japan, 1992) lead to a result of EC50=29 mg/L, based on biomass. The other available one (Aniol S, 2013) used the Water Accommodated Fraction mode of the same guideline and the results were and EC50=1.9 mg/L, based on growth rate. This value has been considered for classification purposes and risk assessment.
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