Registration Dossier
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EC number: 603-894-6 | CAS number: 135108-88-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
72 hour – ErC50 = 43.9 mg/L (nominal concentration) (95% confidence limit: 41.0 – 46.8 mg/L)
72 hour – EyC50 < 4.0 mg/L (nominal concentration)
72 hour – ErC10 = 1.2 mg/L (nominal concentration) (95% confidence limit: 0.5 – 2.3 mg/L)
72 hour – EyC10 < 4.0 mg/L (nominal concentration)
72 hour – NOECr < 4.0 mg/L (nominal concentration)
72 hour – NOECy < 4.0 mg/L (nominal concentration)
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 43.9 mg/L
- EC10 or NOEC for freshwater algae:
- 1.2 mg/L
Additional information
The toxicity of Formaldehyde, polymer with benzenamine, hydrogenated to freshwater algae (Desmodesmus subspicatus) was determined according to EU Method C.3 (Algal Inhibition test). Tested concentrations were 1, 2, 4, 8, 16, 32, 64 and 128 mg/l. Analytical monitoring was done using HPLC. Potassium dichromate was used as positive control substance. The EC50 (72 h) determined is 43.94 mg/l, the EC10 (72 h) is 1.2 mg/l
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