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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

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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.