Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

No reliable study is present for magnesium sulphate. Based on a reliable study with ammonium sulphate and the results being confirmed by studies with potassium and magnesium sulphate, the EC50 for freshwater algae is determined to be 2700 mg/L and the NOEC is ≥ 100 mg/L.

Key value for chemical safety assessment

EC50 for freshwater algae:
2 700 mg/L
EC10 or NOEC for freshwater algae:
100 mg/L

Additional information

No reliable algae study with magnesium sulphate is present. However, a supporting study showed an EC50 >100 mg/L. In addition, several limited documented studies showing high EC50 values for potassium sulphate are present. Also limited documented studies with magnesium sulphate are present, also showing a high EC50. However, in the sulfate category a reliable study with ammonium sulphate is present. This static 18-day test with Chlorella vulgaris showed an 18-d EC50 of 2700 mg/L based on cell number. As no extrapolation was possible to an EC10, the NOEC is considered to be at least 100 mg/L.