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Ecotoxicological information

Toxicity to birds

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Description of key information

Alcohols, C20-30 (even numbered), is a UVCB substance that comprises several linear long chain alcohols, predominantly tetracosan-1-ol (C24), hexacosan-1-ol (C26), and octacosan-1-ol (C28). Together, these substances make up approximately 70% of the composition of Alcohols, C20-30 (even numbered).  Other constituents include, to a much lesser extent, secondary long chain alcohols and complex mixtures of long chain carboxylate esters.  On this basis, study data, where available, for each of the long chain alcohol constituents has been evaluated and considered together; this is consistent with the Category approach applied for Long Chain Alcohols (LCA) under REACH.   In a conservative approach the most sensitive study result from the constituents of the LCA category have been identified and used to address the endpoint in question. 
In accordance with REACH Annex X, the requirement for an avian toxicity study is waived on the basis of the absence of toxicity to mammals. In addition, the substance is unlikely to accumulate through the food chain.

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Additional information

Alcohols, C20-30 (even numbered), is a UVCB substance that comprises several linear long chain alcohols, predominantly tetracosan-1-ol (C24), hexacosan-1-ol (C26), and octacosan-1-ol (C28). Together, these substances make up approximately 70% of the composition of Alcohols, C20-30 (even numbered). Other constituents include, to a much lesser extent, secondary long chain alcohols and complex mixtures of long chain carboxylate esters. On this basis, study data, where available, for each of the long chain alcohol constituents has been evaluated and considered together; this is consistent with the Category approach applied for Long Chain Alcohols (LCA) under REACH.  In a conservative approach the most sensitive study result from the constituents of the LCA category have been identified and used to address the endpoint in question.

 

The requirement for long-term avian testing is waived in view of the lack of toxic effects in mammals. Chronic and sub-chronic mammalian toxicity studies have shown that long chain alcohols (LCA) are of low toxicity. Furthermore, combined repeated-dose studies with developmental endpoints, as well as reproductive and developmental studies, showed no effects at the highest dose tested. Using this evidence it is assumed that the test substance is not considered to be toxic (in PBT terms) to mammals and secondary poisoning is unlikely to occur in the environment.