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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

A group of 20 Brachydanio rerio was used, of which 10 were treated with the similar substance Butanedioic acid, 2,3-dihydroxy-di-C14-C15 alkyl esters at a concentration (100 mg/L dispersion concentration) exceeding the solubility of the substance (1 mg/L), 10 were used as a control, kept in the same conditions without adding the test material. During the study no toxic symptoms or mortality were observed in the treated and the control group. The LC50 was > 100 mg/L. It is likely that the test substance has similar toxicological properties.

An acute immobilisation test with Daphnia magna (STRAUS) was conducted with the test item Butanedioic acid, 2,3-dihydroxy- [R-(R*,R*)]-, C12-13-branched alkyl esters according to OECD 202. According to the results of the test, the EL50 (48 h) for immobilisation was supposed to be > 100 mg/L (nominal). The corresponding NOELR (48 h) was 20.7 mg/L (nominal).

No statistically significant inhibitory effects on any parameter (growth rate, yield) were observed at any of the test item Butanedioic acid, 2,3-dihydroxy- [R-(R*,R*)]-, C12-13-branched alkyl esters loading rates in the algae test, including the highest test item loading rate of 100 mg/L (nominal) at test end. Thus the overall LOELR was not determinable and the overall NOELR was observed to be at 100 mg/L (nominal).

The EL10-, EL20- and EL50-value for growth rate (ErL10, 20, 50) and the EL10-, EL20- and EL50-value for yield (EyL10, 20, 50) were > 100 mg/L (nominal).

Additional information