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EC number: 293-214-0 | CAS number: 91052-53-8
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
LL50 (96h) to fish expected to be higher than 2,7 mg/L.
Key value for chemical safety assessment
Additional information
One study evaluating the acute toxicity of Glycerides, C12-18 mono- and di- (CAS No. 91052-49-2) to fish species is available (Hafner, 2012). This test was conducted according to OECD 203, under GLP conditions. Danio rerio was exposed for 96 hours in a limit test to a nominal loading rate of 20 mg/L (Water Accomodated Fraction (WAF)). This concentration was chosen based on the results obtained in the tests conducted on algae and aquatic invertebrates, which resulted in EL50 values of 13 mg/L and 36.5 mg/L, respectively (loading rates). This approach is in accordance with the OECD Guidance document No. 126 “Threshold approach for acute fish toxicity” (2010).The Water Accommodated Fraction (WAF) was prepared by adding the test material into water, stirring for a period of 48 hours, followed by a sedimentation period of about 70 minutes. After the sedimentation period, the WAF was clear. Very small crumbs of test item were however, observed on the surface and at the bottom of the beakers. The test solution was prepared without a further filtration step. Analytical measurements of the test concentration were performed via TOC and DOC analysis at the start and at the end of the test. The initial concentration was determined to be 1.8 mg/L, whereas 1.9 mg/L were reported at the end of the test. The latter value corresponds to a measured test concentration of 2.7 mg/L test material.
After 96 hours of exposure to the test substance, no mortality was reported in control or treatment group and therefore, the LL50 (96 h) was determined to be > 20 mg/L (nominal, loading rate) and > 2.7 mg/L (measured final test material concentration).
Based on the results from structurally related read-across substances (in accordance to Regulation (EC) No 1907/2006 Annex XI, 1.5) which are characterized by a similar ecotoxicological profile and the water solubility of Glycerides, C12-18 mono-, di- and tri- (17.2 mg/L), it can be concluded that the LL50 (96h) of Glycerides, C12-18 mono-, di- and tri- to fish was expected to be higher than 2.7 mg/L.
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