Registration Dossier
Registration Dossier
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EC number: 218-871-2 | CAS number: 2269-22-9
Endpoint summary
Administrative data
Description of key information
Additional information
Stability
Aluminium tri-sec-butanolate reacts instantaneously with water to form sec-butanol and Al3+ species. The resulting pH being weakly alkaline indicates according to Langmuir et al. 2004 that the Al3+ species formed are mainly Al(OH)4-, Al(OH)3 and Al(OH)2+ at pH 8.5. Thus, aluminium tri-sec-butanolate is abiotically degradable and forms sec-butanol being readily biodegradable as shown in the registration dossier of sec-butanol submitted by the same registrant.
Biodegradation
Testing of aluminium sec-butanolate for biodegradation is technically not feasible as the substance immediately dissociates to Al3+ species and 2-butanol upon contact with water or moisture. Sec-butanol is known to be readily biodegradable as demonstrated by the supportive study with a BOD5/COD ratio > 0.5. Thus the organic moiety of the test substance is considered readily biodegradable.
Transport and Distribution
In accordance with column 2 of REACH Annex VIII, the adsorption/desorption screen (required in section 9.3.1) does not need to conducted as the substances immediately hydrolyses upon contact with water and the organic moiety 2-butanol being formed is readily biodegradable and has a low log Kow.
QSARs indicate that the logKoc of 2 -butanol is expected to be <1.
Bioaccumulation
In accordance with column 2 of REACH Annex IX, the aquatic bioaccumulation study (required in section 9.3.2) does not need to be conducted as the substances organic moiety 2 -butanol has a log Kow ≤ 3 (logKOW sec-Butanol = 0.65). The same applies to terrestrial bioaccumulation. Thus, bioaccumulation is not expected.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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