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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

DMCHA is considered acutely toxic for freshwater algae.

Key value for chemical safety assessment

EC50 for freshwater algae:
3.5 mg/L
EC10 or NOEC for freshwater algae:
1.05 mg/L

Additional information

The toxicity of DMCHA to the algae Pseudokirchneriella subcapitata was determined according to the OECD 201 guideline (BASF SE, 2019). The study was run with analytical verification of the test item and results were based on nominal concentrations of 0 (control), 0.1, 0.32, 1, 3.2, 10 mg/L under static conditions. The 72-hour algal growth rate ErC50 was 3.5 mg/L (95% confidence limits: 3.242 – 3.791), the 72-hour algal growth rate ErC10 was 0.6 mg/L (95% confidence limits: 0.463 - 0.649). The test was conducted under GLP and was compliant with all validity criteria required by the corresponding guideline.


Based on these results, DMCHA is considered acutely toxic for freshwater algae.