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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

On the basis of ecotoxicity studies on elemental strontium concentrations and related soluble substances (assessment entities), reliable aquatic toxicity data of strontium and strontium substances are available from GLP-conform guideline studies for algae, daphnia, fish and microorganisms.

Reliable acute data are available for three trophic levels: algae, invertebrates and fish

- An unbounded ErC50 value of > 47.1 mg Sr/L was identified for the growth rate of algae (Pseudokirchneriella subcapitata)

- An unbounded value of > 56.3 mg Sr/L and a bounded acute value of 125 mg Sr/L were identified for the freshwater invertebrate species Daphnia magna with the latter being well above the OECD test limit.

- An unbounded value of > 56.34 mg Sr/L was identified for the freshwater fish species Danio rerio

- An unbounded value of > 92.8 mg Sr/L (96h-LC50) was identified for the saltwater fish species Morone saxatilis

- An unbounded value of > 163.8 mg Sr/L (3 -h EC10) was derived for microorganisms (activated sludge)

Reliable chronic data are available for two trophic levels: algae and invertebrates.

- An ErC10 value of 24.3 mg Sr/L was identified for the growth rate of algae (Pseudokirchneriella subcapitata)

- A chronic value of 21 mg Sr/L is available for the invertebrate Daphnia magna.


In sum, strontium is not acutely and chronically toxic to aquatic freshwater organisms since measured endpoints are unbounded or above the OECD test limit.

Additional information