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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

EC50 (96 h) 25 mg/L Nitocria spinipes (r/a)

Key value for chemical safety assessment

Additional information

No short term toxicity to aquatic inverterates data is available for the substance Nonanol, branched and linear, (CAS 68515-81-1). However data is available for the closely related substance nonanol (CAS 143 -08 -8).

A 96 h EC50 of 25 mg/L has been determined for the effects of the test substance on immobility of the brackish invertebrate N. spinipes. This represents the only reliable value available for this endpoint and has been chosen as key.

The nonanol, branched and linear substance has a structure which is termed 'essentially linear'. The physicochemical, toxicological and ecotoxicological properties and behaviour of this substance do not significantly differ 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 nonanol (CAS 143-08-8) to nonanol, branched and linear (CAS 68515-81-1) is scientifically justified and valid.