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.
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The substance Paraffins (petroleum), normal C>10, is expected not to demonstrate short-term toxicity to aquatic invertebrates as the normal paraffin substances are not showing effects, as measured by immobility or mortality in 48- or 96- hour toxicity studies with loading levels ranged between 1000 and 10,000 mg/L.
Key value for chemical safety assessment
Additional information
The normal paraffin substances in this category, including n-decane, n-undecane, n-dodecane, n-tridecane, n-tetradecane, and a substance containing a range of normal paraffins identified as hydrocarbons, C11-C14, containing n-alkanes with less than 2% aromatics, are not expected to demonstrate acute invetebrate toxicity based on results of studies with freshwater and marine invertebrates, including D. magna, C. marinus, and Mysidopsis bahia. Each of these substances has been shown not to demonstrate effects, as measured by immobility or mortality in 48- or 96-hour toxicity studies at the highest loading levels tested, which have ranged from 1000 to 10,000 mg/L. Therefore, the substance Paraffins (petroleum), normal C>10, is expected not to demonstrate short-term toxicity to aquatic invertebrates.
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