Glycerides, C16-18 and C18-unsatd., deodorizer distillates

Sediment toxicity

Administrative data

Endpoint:

sediment toxicity: long-term

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Justification for type of information:

Based on the high estimated Koc values, ‘Glycerides C16-18 and C18-unsatd., deodorizer distillates’ is expected to adsorb to suspended solids and sediment. 'Glycerides C16-18 and C18-unsatd., deodorizer distillates' presents poor water solubility (water solubility < 100 mg/L; actual range 6.4-28 mg/L) and is expected to be rapidly degraded in the aquatic environment. Therefore, the bioavailability for aquatic sediment organisms will be limited. Further, because of its low volatility, it is not expected to volatilise to the atmosphere and will not distribute to water, soil or sediment.
Further, the low estimated BCF values of the fatty acids and glycerides constituents (ranging from 3.162-56.23 L/kg), the bioaccumulation in sediment organisms will be limited. Also, similar to mammals, the major constituents (i.e. glycerides and fatty acids) of the substance are known to be metabolised and used as an essential energy source for growth and reproduction. Considering the above information together with the overall low toxicity potential of the substance in aquatic organisms and mammals, no toxicity to sediment organisms is expected. Therefore, no further testing for sediment organisms is considered to be required, in accordance with Annex IX, Section 9, Column 2 of the REACH legislation).