Registration Dossier
Registration Dossier
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EC number: 941-570-9 | CAS number: -
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
An acute Daphnia test with Reaction mass of 2-butylheptanoic acid and 2-ethylnonanoic acid and 2-methyldecanoic acid and 2-propyloctanoic acid is not available. The short-term toxicity of the similar substance 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 static 48h acute study in Daphnia magna according to OECD guideline 202. The result of a 48h-EC50 of 16 mg/L (95% CL 13 -19 mg/L) can be considered reliable without restrictions.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 16 mg/L
Additional information
An acute Daphnia test with Reaction mass of 2-butylheptanoic acid and 2-ethylnonanoic acid and 2-methyldecanoic acid and 2-propyloctanoic acid is not available.
Acute toxicity in Daphnia magna with the similar substance 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 tested according to OECD guideline No. 202. The study met the acceptability criteria and was conducted GLP compliant, therefore considered reliable without restrictions. The 48h-EC50 was 16 mg/L based on average exposure concentrations (95% confidence interval between 13 and 19 mg/L).In a supporting study (Daphnia magna, OECD 202, GLP compliant) with the analogue 2-butyloctanoic acid the 48h-EC50 was 31 mg/l (95% confidence interval between 22 and 42 mg/l), thus confirming the range of toxicity to invertebrates found with 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.
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