Registration Dossier
Registration Dossier
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EC number: 204-427-5 | CAS number: 120-80-9
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Catechol is not considered as presenting a strong binding behaviour to organic or mineral soils.
Key value for chemical safety assessment
- Koc at 20 °C:
- 118.44
Additional information
Two studies are available (Boyd, 1982; Haderlein & Schwarzenbach, 1993). The first of them, scored as reliability 2 according to Klimisch, was flagged as a key study. It was performed accordingly to OECD guideline 106, except that one soil type was used. A Koc value of 118.44 and an associated Log Koc of 2.07 were reported; implying that catechol is not considered as presenting a strong binding behaviour to soil organic particles. The second study, also scored as Klimisch 2, investigated the adsorption potential of catechol to mineral surfaces. A Kd value of 25 L/kg was reported; supporting a low potential for adsorption in mineral soils also. This study was selected as a supporting study.
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