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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

One reliable acute/chronic toxicity data point (Klimisch 1, GLP) for an algal species  -the green alga Pseudokirchneriella subcapitata - has been identified. Based on measured Sr-level in the water column, a 72h-ErC50 and 72h-NOEC of  is reported by Tobor-Kaplon (2010), using  Sr(NO3)2 as test substance.

Key value for chemical safety assessment

EC50 for freshwater algae:
43.3 mg/L
EC10 or NOEC for freshwater algae:
43.3 mg/L

Additional information

One reliable acute/chronic toxicity data point (Klimisch 1, GLP) for an algal species - the freshwater green alga Pseudokirchneriella subcapitata - has been identified. No effect (growth rate) was noted at the highest (nominal) test concentration of 100 mg test material/L. Based on measured Sr-levels, this effects levels translates to 43.3 mg Sr/L or 104.7 mg strontium nitrate/L.

Therefore, based on measured Sr-levels in solution, the ErC50 and NOEC are >43.3 and >=43.3 mg Sr/L, respectively.