Hydrocarbons, C15-20

Endpoint summary

Additional information

The substance belongs to the category "Hydrocarbons, C₁₄-C₂₀, aliphatics (≤2% aromatics) and has been investigated using a category approach (see document attached to IUCLID section 13 for read-across justification).

"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 for all substances from "Hydrocarbons, C14 -C20, aliphatics (<= 2% aromatics)" were not toxic to fish. Results of computer modelling to estimate chronicity 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.

Short-term toxicity to aquatic invertebrates

Short-term toxicity studies on aquatic invertebrates showed the low toxicity of the substance with a LL50>3000 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.

Toxicity to algae and cyanobacteria

The NOELR for algae was reported to be 2580 mg/L in seawater.

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.