Registration Dossier
Registration Dossier
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EC number: 222-695-1 | CAS number: 3576-88-3
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
The adsorption potential to soil or sediment is low. The mean of the calculated logKoc-values is: logKoc = 1.35.
Key value for chemical safety assessment
- Koc at 20 °C:
- 22.4
Additional information
According to the Annexes VIII and IX of REACH "The study does not need to be conducted if:
based on the physicochemical properties the substance can be expected to have a low potential for adsorption (e.g. the substance has a low octanol-water partition coefficient); ...".
The partition coefficients of melam is low, i.e. log Pow <-0.9, see Chapter 4.7. A relevant adsorption of melam to soil is therefore not expected and a waiving of the study is justified.
3 results are available from calculation methods. The mean of the 3 available log Koc was calculated according to the ECHA Guidance Documents on Info Requirements, R.7.1.15.3 to logKoc = 1.35, corresponding to Koc = 22.4.
The adsorption potential to soil or sediment is therefore low.
A further study with three soil types was disregarded because the reported and used spiking solution of 5 g melam/L methanol is not feasible, as the solubility of melam in methanol is 0.17 mg/L at 23 °C.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.
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