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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Description of key information

One reliable toxicity data point (Klimisch 1, GLP) has been identified for micro-organisms; a respiration inhibition test with activated sludge. Based on total amount of Sr added to the test solution, a  3h-IC50 and 3h-NOEC of >41.4 and >=41.4 mg Sr/L, respectively,  was reported by Desmares-Koopman (2010), using  Sr(NO3)2 as test substance.

Key value for chemical safety assessment

EC50 for microorganisms:
41.4 mg/L
EC10 or NOEC for microorganisms:
41.4 mg/L

Additional information

One reliable toxicity data point (Klimisch 1, GLP) with activated sludge from a (predominantly) domestic sewage plant has been reported by Desmares-Koopman (2010). Inhibition of respiration was the endpoint under consideration.

At a nominal concentration of 100 mg Sr(NO3)2/L, no inhibition of the respiration rate was noted. Therefore - expressed as mg Srtotal/L, the 3h-IC50 and 3h-NOEC were >41.4 and >=41.4 mg/L, respectively.