Registration Dossier
Registration Dossier
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EC number: 219-863-1 | CAS number: 2554-06-5
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Adsorption / desorption: log Koc 4.1 (QSAR).
Key value for chemical safety assessment
- Koc at 20 °C:
- 12 589
Additional information
A log Koc value of 4.1 at 20 - 25°C was obtained using a validated QSAR method. The result is considered to be reliable. The registration substance has an average purity of >70% Vi4-D4, with <20% 2,4,6,8,10-pentamethyl-2,4,6,8,10-pentavinylcyclopentasiloxane (Vi5-D5; CAS 17704-22-2; Impurity 1) and <10%2,4,6-trimethyl-2,4,6-trivinylcyclotrisiloxane (Vi3-D3; CAS 3901-77-7; Impurity 2) present as impurities.
A log Kocvalue of 6.0 at 20 - 25°C was obtained for Vi5-D5 using a validated QSAR method. The result is considered to be reliable.
Adsorption data are not relevant for Vi3-D3, as it hydrolyses rapidly; a data waiver is applicable.
[LogKoc: 4.1]
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