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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

EC50 >47 ug/L (r-a)

Key value for chemical safety assessment

Additional information

No data is available for pentadecanol, branched and linear or pentadecan-1 -ol, 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, branched and linear is scientifically justified.

A reliable 96 h EC50 value of 46.8 mg/L has been determined for the effects of the test substance pentadecanol, branched on cell numbers of S. capricornutum.