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EC number: 293-026-9 | CAS number: 91050-80-5
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
No effects up to a loading rate of 1000 mg/L (ISO 10253, Skeletonema costatum)
Key value for chemical safety assessment
Additional information
One experimental study investigating the toxicity of Fatty acids, C16-18, tetraesters with 3,3'-oxybis[1,2-propanediol] (CAS 91050-80-5) to marine algae is available (Hudson, 2007). The study was conducted according to ISO 10253 under GLP conditions. Skeletonema costatum was exposed to five nominal concentrations between 1000 and 10000 mg/L, which were prepared as Water Accommodated Fraction (WAF), in a static test for 72 h. Effects on growth rate were observed at the four highest test concentrations resulting in an EL50 (72 h) = 2286.77 mg/L (nominal) and NOELR (72 h) = 1000 mg/L (nominal). Although the test solutions were prepared as Water Accommodated Fractions (WAF), floating or settled particles were observed at the lowest test concentration of 1000 mg/L after 20 hours stirring. Therefore, the effects on growth rate at the four highest test concentrations are probably caused by physical effects due to undissolved test material. It is thus not expected that the reported EL50 refers to a systemic toxic effect. Nevertheless, it can be concluded that Fatty acids, C16-18, tetraesters with 3,3'-oxybis[1,2-propanediol] show no effects up to a loading rate of 1000 mg/L (nominal).
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