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EC number: 242-367-1 | CAS number: 18480-07-4
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
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 60.1 mg strontium hydroxide/L.
Therefore, based on measured Sr-levels in solution, the ErC50 and NOEC are >43.3 and >=43.3 mg Sr/L, respectively.
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