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Environmental fate & pathways

Adsorption / desorption

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Description of key information

The adsorption coefficient (Koc) of Cyclohexane, 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethyl-, homopolymer, acetone oxime-blocked on soil and on sewage sludge was determined in a GLP study with the HPLC method according to OECD TG 121 (2001) and EC method C. 19 (2008). Two peaks were observed corresponding to 
- the blocked trimer: log Koc = 4.414 (soil), 4.530 (sewage sludge)
- and a higher homologue (blocked pentamer): log Koc = 6.631 (soil), 6.834 (sewage sludge)
Both is "very high" adsorption potential (Koc > 10000) on the Blume scale.

Key value for chemical safety assessment

Koc at 20 °C:
25 953

Additional information

[LogKoc: 4.414]