Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

The substance belongs to the Category "Hydrocarbons, C14-C20, aliphatics (=2% aromatics) have been investigated using a category approach.

"Hydrocarbons, C14-C20, aliphatics (=2% aromatics)" are poorly soluble in water and made of constituents with various water solubilities. As a consequence, most studies are performed with "Water Accomodated Fractions" (WAFs) and the results must be expressed as "loading rates" instead of "concentrations".

Short-term toxicity to fish

Short-term toxicity studies showed that fish are the less sensitive group: no LL50 was determined and mortality was never observed, with concentrations ranging from 250 to 70 000 mg/l.

Long-term toxicity to fish

Petrotox calculations determined that all substances from "Hydrocarbons, C14 -C20, aliphatics (<= 2% aromatics)" were not toxic to fish. Results of computer modelling to estimate chronic toxicity in a 28 -day freshwater fish study, based on growth, show that the substance will not produce toxicity at or below its maximum attainable water solubility. These results are read across to Hydrocarbons, C15-C19, n-alkanes, isoalkanes, <2% aromatics.

Short-term toxicity to aquatic invertebrates

Measured data are available for the registration substance in which the EL50 for Daphnia magna was found to be >100 mg/l.

Long-term toxicity to aquatic invertebrates

The 21-d NOELR for aquatic invertebrates (Daphnia magna) based on reproduction was found to be > 1000 mg/l according to Petrotox calculations. The experimental studies could not determine LL50. These results are read across to Hydrocarbons, C15-C19, n-alkanes, isoalkanes, <2% aromatics.

Toxicity to algae and cyanobacteria

Measured data are available for the registration substance in which the EL50 was found to be >100 mg/l and the NOELR was ≥100 mg/l.

Toxicity to microorganisms

"Hydrocarbons, C14-C20, aliphatics, =2% aromatics" were found to be not toxic for aquatic microorganisms (LC50 > 100 mg/L). Therefore the substance is considered not toxic for aquatic organisms. These results are read across to Hydrocarbons, C15-C19, n-alkanes, isoalkanes, <2% aromatics.