Registration Dossier
Registration Dossier
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EC number: 203-745-1 | CAS number: 110-19-0
Endpoint summary
Administrative data
Description of key information
Additional information
Photodegradation
The degradation of isobutyl acetate in air by reaction with OH-radicals was estimated with the AOP programme (v1.92; ECT, 2009). Based on a 24 -h day with an OH radical concentration of 0.5 E06 OH/cm³ the overall OH rate constant was calculated to be 4.6010 E-12 cm³/molecule*sec, leading to a half-life of approx. 3.5 days (equivalent to 83.7 h).
Hydrolysis
Isobutyl acetate will hydrolyze slowly. Using HYDROWIN (v2.00), the hydrolytic half-life was estimated to be 121 d at pH 8 and 3.3 years at pH 7 (ECT, 2009).
In accordance with column 2 of REACH Annex VIII, the study does not need to be conducted as the substance is readily biodegradable (similar to OECD 301 D: 81% in 20 d, 10-d window met; Price et al., 1974).
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