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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

Short-term toxicity to fish:
- Glycerol: EC50 >10000 mg/L (DIN 38412 Teil 1)
- Fatty acids, C14-18 and C16-18-unsatd., maleated: EL50 >100 mg/L (OECD 202)

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
150 mg/L

Additional information

Environmental exposure to High oleic sunflower oil, maleated is hampered by its low water solubility and surface active properties. In case of spills (very high concentrations) it cannot be fully excluded that the substance may cause effects to the gills of fish and local effects due to disturbance of membranes in daphnia and algae. However, such situation is not considered under "normal " use and therefore not taken into consideration. At low concentrations, when taken up by aquatic organisms the substance will be enzymatically broken down to Fatty acids, C14-18 and C16-18-unsatd., maleated and glycerol. Therefore it is considered acceptable to use the data on the breakdown products as starting point.

Glycerol was tested in 96-h static acute toxicity test in the Rainbow trout as part of a test series by the Columbia National Fisheries Research Laboratory including data of 1587 acute toxicity tests on 271 chemicals against 28 species of fish and 30 species of invertebrates. As a result, the LC50 was found to be 54 g/L.

Glycerol was also analysed in two parallel studies performed according to German National Standard DIN 38 412 by two different laboratories. Freshwater fish Leuciscus idus was exposed for 48h to glycerol. In both studies the LC0, LC50 and LC100 were found to be >10000 mg/L, respectively.

Acute toxicity to fish by Fatty acids, C14-18 and C16-18-unsatd., maleated was assessed in a static test performed according to DIN guideline 38412, part 15. Freshwater fish Leuciscus idus was exposed for 48 to the nominal loading rate of 150 mg/L. The TOC at study begin of the saturated solution was 14.4 mg/L. Since no mortality sub-lethal effects after 48 hours were observed, the LL50 and NOLR were determined to be >150 mg/L and150 mg/L, respectively.

Because both substances are the breakdown products the same result can be expected for High oleic sunflower oil, maleated.