Registration Dossier
Registration Dossier
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EC number: 291-169-1 | CAS number: 90342-32-8
Sediment toxicity
Administrative data
Link to relevant study record(s)
Description of key information
In accordance with section 2 of REACH Annex XI the long term toxicity studies with sediment organisms do not need to be conducted as testing is technically not possible.
Key value for chemical safety assessment
Additional information
Short term sediment toxicity
A 6 d EC50 value of 150 mg/kg dw soil (1.3% organic carbon) has been determined for the effects of decanol on population numbers of the ostracod H. incongruens. This is a reliable non-guidance study looking at the effects in a soil and water mixture.
The study reflects the lowest value that is available for this endpoint.
No data is available for decanol branched (a single methyl branch group in the 2 -position, CAS 85995-86-4) however a study report is available with the closely related substance decanol (CAS 112-30-1). Decanol branched (CAS 85995-86-4) has a type of branched structure 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. The difference in composition is dependent on the manufacturing process which may create linear alcohols or simple mono-branched structures. Direct read-across from decanol (CAS 112 -30 -1) to decanol branched (CAS 85995-86-4) is therefore scientifically justified.
Long term sediment toxicity
In accordance with Annex XI, section 2, the long-term toxicity effects studies to sediment dwelling organisms (required in Section 9.5.1) do not need to be conducted as the study is technically not possible. This is due to the constituents' very short sediment half-life once desorbed (see CSR for further details), which do not allow for the studies to be conducted.
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