Registration Dossier
Registration Dossier
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EC number: 265-232-9 | CAS number: 64771-71-7 A combination of normal paraffins having carbon numbers predominantly greater than C10 obtained by urea adduction or molecular sieve processes.
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The substance Paraffins (petroleum), normal C>10 is expected to be with very limited toxicity as the EL50 (72h) was not reached (noted to be higher than 10000 mg/L) in the case of the tested substance Hydrocarbons C11-C14, n-alkanes, <2% aromatics.
Key value for chemical safety assessment
Additional information
One study report is available for this endpoint, dealing with the toxicity of the substance Hydrocarbons, C11 -C14, n-alkanes, <2% aromatics, on algae growth rate. This study used the marine species Skeletonema costatum.
The results showed that the exposure of Skeletonema costatum to concentrations up to 10,000 mg/l for 72 h does not inhibit algal growth (based on growth rate measurements). Therefore, the substance Paraffins (petroleum), normal C>10, is not expected to inhibit algal growth.
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