Registration Dossier
Registration Dossier
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EC number: 202-476-7 | CAS number: 96-09-3
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
According to the classification of Blume & Ahlsdorf (1993) styrene oxide can be regarded as a substance with a low sorption onto soil organic matter.
Key value for chemical safety assessment
- Koc at 20 °C:
- 38
Additional information
In a study conducted according the OECD guideline 121 the adsorption coefficient Koc of styrene oxide was investigated. The HPLC method using soil-adsorption-reference data was chosen for the determination of the adsorption coefficient. Based on the pKa calculations using the Perrin calculation method (pKalc 5.0, module in Pallas 3.0, CompuDrug International San Francisco, CA, USA) the HPLC analysis was performed at neutral pH. A Koc value of 38 corresponding to a log Koc of 1.58 was determined for styrene oxide.
This result is supported by the calculation using EPIWIN v3.20, PCKOCWIN v1.66. The calculated soil sorption coefficient is Koc=54 (log Koc=1.73).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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
