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Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

There is data available for this substance. Additionally, key and supporting data is available for structural analogues. The data is read across to this substance based on analogue read across and a discussion and report on the read across strategy is provided as an attachment in IUCLID Section 13.

The substances are poorly soluble and made of constituents with various water solubility. As a consequence, the exposures were performed with Water Accommodated Fractions (WAFs). Therefore, the results are based on nominal loadings.

Based on data available for this substance and structural analogues, this substance does not demonstrate acute fish, acute invertebrate, algae and microorganism toxicity at high loading rates. Chronic toxicity was never observed below 1 mg/L.

Additional information

Key and supporting information is summarised below:

Short-term toxicity to fish

Hydrocarbons, C11-C13 (odd number), n-alkanes,<2% aromatics presented a 96-h LL50 (mortality) for Danio rerio of >100 mg/L (based on nominal concentration).

 

Hydrocarbons, C12-C15, n-alkanes, isoalkanes, <2% aromatics presented a 96-h LL50 (mortality) for Cyprinus carpio of >100 mg/L (water-accommodated fraction (WAF)).

 

Hydrocarbons, C9-C10, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 96-h LL50 (mortality) for Oncorhynchus mykiss ranging from >10 to <30 mg/L (WAF).

 

Hydrocarbons, C9-C10, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 96-h LL50 (mortality) for Oncorhynchus mykiss of 50.9 mg/L (WAF).

 

Hydrocarbons, C9-C11, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 96-h LL50 (mortality) for Oncorhynchus mykiss of >1,000 mg/L (WAF).

 

Hydrocarbons, C10-C12, isoalkanes, <2% aromatics presented a 96-h LL50 (mortality) for Oncorhynchus mykiss of >1,000 mg/L (WAF).

 

Hydrocarbons, C10-C13, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 96-h LL50 (mortality) for Oncorhynchus mykiss of >1,000 mg/L (WAF).

 

Hydrocarbons, C11-C14, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 96-h LL50 (mortality) for Oncorhynchus mykiss of >1,000 mg/L (WAF).

 

Hydrocarbons, C10-C13, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 96-h LL50 (mortality) for Oncorhynchus mykiss of >792,000 mg/L (water-soluble fraction).

 

Hydrocarbons, C11-C14, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 96-h LL50 (mortality) for Oncorhynchus mykiss of >803,000 mg/L (water-soluble fraction).

 

Hydrocarbons, C12-C16, isoalkanes, cyclics, <2% aromatics presented a 96-h LL50 (mortality) for Oncorhynchus mykiss of >87,556 mg/L (WAF).

Long-term toxicity to fish

The aquatic toxicity was estimated using the PETROTOX computer model (v4.0), which combines a partitioning model used to calculate the aqueous concentration of hydrocarbon components as a function of substance loading with the Target Lipid Model used to calculate acute and chronic toxicity of nonpolar narcotic chemicals. PETROTOX computes toxicity based on the summation of the aqueous-phase concentrations of hydrocarbon block(s) that represent a hydrocarbon substance and membrane-water partitioning coefficients (KMW) that describe the partitioning of the hydrocarbons between the water and organism.

Short-term toxicity to aquatic invertebrates

Hydrocarbons, C12-C15, n-alkanes, isoalkanes, <2% aromatics presented a 48-h EL50 for Daphnia magna of >100 mg/L (WAF) based on mobility.

 

Hydrocarbons, C11-C14, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 48-h LL50 for Daphnia magna of >1,000 mg/L (WAF) based on mortality.

 

Hydrocarbons, C11-C14, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 96-h LL50 for Chaetogammarus marinus of >10,000 mg/L (WAF) based on mortality.

 

Decane presented a 96-h LL50 for Chaetogammarus marinus of >1,000 mg/L (WAF) based on mortality.

 

Decane presented a 96-h EL50 for Daphnia magna of >1,000 mg/L (WAF) based on mobility.

 

Decane presented a 96-h LL50 for Mysidopsis bahia of >1,000 mg/L (WAF) based on mortality.

 

Undecane presented a 96-h LL50 for Chaetogammarus marinus of >1,000 mg/L (WAF) based on mortality.

 

Undecane presented a 96-h EL50 for Daphnia magna of >1,000 mg/L (WAF) based on mobility.

 

Undecane presented a 96-h LL50 for Mysidopsis bahia of >1,000 mg/L (WAF) based on mortality.

 

Hydrocarbons, C11-C14, n-alkanes, <2% aromatics presented a 48-h LL50 for Arcartia tonsa of >10,000 mg/L (WAF) based on mortality.

 

Dodecane presented a 96-h LL50 for Chaetogammarus marinus of >1,000 mg/L (WAF) based on mortality.

 

Dodecane presented a 96-h EL50 for Daphnia magna of >1,000 mg/L (WAF) based on mobility.

 

Dodecane presented a 96-h LL50 for Mysidopsis bahia of >1,000 mg/L (WAF) based on mortality.

 

Tridecane presented a 96-h LL50 for Chaetogammarus marinus of >1,000 mg/L (WAF) based on mortality.

 

Tridecane presented a 96-h EL50 for Daphnia magna of >1,000 mg/L (WAF) based on mobility.

 

Tridecane presented a 96-h LL50 for Mysidopsis bahia of >1,000 mg/L (WAF) based on mortality.

 

Tetradecane presented a 96-h LL50 for Chaetogammarus marinus of >1,000 mg/L (WAF) based on mortality.

 

Tetradecane presented a 96-h EL50 for Daphnia magna of >1,000 mg/L (WAF) based on mobility.

 

Tetradecane presented a 96-h LL50 for Mysidopsis bahia of >1,000 mg/L (WAF) based on mortality.

Long-term toxicity to aquatic invertebrates

Hydrocarbons, C11-C13 (odd number), n-alkanes,<2% aromatics presented a 21-d NOELRs for Daphnia magna of 10.2 mg/L (nominal loading rate), based on parent mortality and reproduction per surviving.

 

Hydrocarbons, C11-C13, isoalkanes, <2% aromatics presented a 21-d NOELRs for Daphnia magna of 1 mg/L (nominal loading rate), based on effects on survival, reproduction, or length.

Toxicity to algae and cyanobacteria

Hydrocarbons, C11-C13 (odd number), n-alkanes, <2% aromatics presented a 72-h EL50 (growth rate) for Pseudokirchneriella subcapitata of >100 mg/L (WAF) and a 72-h NOELR (growth rate) for Pseudokirchneriella subcapitata of 100 mg/L (WAF).

 

Hydrocarbons, C12-C15, n-alkanes, isoalkanes, <2% aromatics presented a 72-h EL50 (growth rate) for Pseudokirchneriella subcapitata of >100 mg/L (WAF) and a 72-h NOELR (growth rate) for Pseudokirchneriella subcapitata of 100 mg/L (WAF).

 

Hydrocarbons, C11-C14, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 72-h EL50 (growth rate and biomass) for Skeletonema costatum of >100,000 mg/L (WAF) and a 72-h NOELR (growth rate and biomass) for Skeletonema costatum of 100,000 mg/L (WAF).

 

Hydrocarbons, C11-C14, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 72-h EL50 (growth rate) for Skeletonema costatum of >100,137 mg/L (WAF) and a 72-h EL10 (growth rate) for Skeletonema costatum from 60021 to 80072 mg/L (WAF).

 

Hydrocarbons, C9-C11, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 72-h EL50 (growth rate and biomass) for Pseudokirchneriella subcapitata of >1,000 mg/L (WAF) and a 72-h NOELR (growth rate and biomass) for Pseudokirchneriella subcapitata of 1,000 mg/L (WAF).

 

Hydrocarbons, C10-C13, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 72-h EL50 (growth rate and biomass) for Pseudokirchneriella subcapitata of >1,000 mg/L (WAF) and a 72-h NOELR (growth rate and biomass) for Pseudokirchneriella subcapitata of 1,000 mg/L (WAF).

 

Hydrocarbons, C11-C14, n-alkanes, isoalkanes, cyclics, <2% aromatics presented a 72-h EL50 (growth rate and biomass) for Pseudokirchneriella subcapitata of >1,000 mg/L (WAF) and a 72-h NOELR (growth rate and biomass) for Pseudokirchneriella subcapitata of 1,000 mg/L (WAF).

Toxicity to microorganisms

Hydrocarbons, C11-C13 (odd number), n-alkanes, <2% aromatics presented a 3-h EC10 (respiration inhibition) for activated sludge of >1,000 mg/L.

 

Isododecane presented a 5-h EC50 (respiration rate inhibition) for Pseudomonas putida of >2 mL/L.