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Ecotoxicological information

Long-term toxicity to fish

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Description of key information

(35 d) NOEC >0.1 mg/L (r-a)

Key value for chemical safety assessment

Additional information

No data is available for pentadecanol (CAS 629 -76 -5), however a study report is available with the closely related substance pentadecanol branched (a single methyl branch group in the 2-position).This type of branched structure is termed 'essentially linear' and the physicochemical, toxicological and ecotoxicological properties and behaviour do not differ significantly between such structures and their linear analogues. It is therefore possible to read-across between the two substances. Additionally these isomeric substances have an identical molecular weight. The difference in composition is dependent on the manufacturing process which may create linear alcohols or simple mono-branched structures. Direct read-across from pentadecanol branched to pentadecanol (CAS 629-76-5) is scientifically justified.

A 35 d NOEC value of >140 ug a.i./L has been determined for the effects of the pentadecanol branched on the growth, survival and hatchability of the freshwater fish Pimephales promelas. No statistically significant effects were observed at the highest concentration tested. Spine curvature was observed in a few individuals in the treatment vessels.