Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Aquatic toxicty tests with 2 -hexyldecanoic acid are not available.

The short-term toxicity to aquatic invertebrates of the source substance 1, 2 -butyloctanoic acid, was assessed in a static 48h acute study in Daphnia magna according to OECD guideline 202. The result of this study was an 48h-EC50 of 31 mg/l (95% confidence interval between 22 and 42 mg/l).

The toxicity of source substance 2, Reaction mass of n-undecanoic-acid and 2-methyl-decanoic-acid and 2-ethyl-nonanoic-acid and 2-propyl-octanoic-acid and 2-butyl-heptanoic-acid, was assessed in a fresh water algal groth inhibition test with Pseudokirchnerella subcapitata according to OECD guideline 201. The ErC10 of 2.7 mg/L (95% CL 2.0 – 3.5 mg/L), NOErC of 1.3 mg/L and the  ErC50 of 13 mg/L (95% CL 11 – 15 mg/L) after 72 hours of exposure can be considered reliable without restrictions.

Additional information