Registration Dossier
Registration Dossier
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EC number: 255-449-7 | CAS number: 41583-09-9
Biodegradation in soil
Administrative data
Link to relevant study record(s)
Description of key information
A biodegradation in soil does need not to be conducted. A log kow of -3 (at 25 °C) and a determined log Koc < 1.3 indicate low potential for adsorption to solid soil. Thus, a simulation test on biodegradation in soil does not need to be conducted.
Key value for chemical safety assessment
Additional information
A biodegradation in soil does need not to be conducted, if the substance can be expected to have a low potential for adsorption: A log kow of -3 (at 25 °C) was determined which indicates low potential for adsorption to soil (log kow < 3; following REACh guidance Document R7.1.15.4). Additionally, the determined log Koc of < 1 - 3 indicates low potential for adsorption to solid soil (following Table R.7.11-2, REACh-Guidance Documents). Thus, a simulation test on biodegradation in soil does not need to be conducted.
A study on nitrification in soil (Hauck, 1964) is available with the read across source substance melamine (CAS 108-78-1). Please refer section 13 for the read across justification. Nitrification of melamine from powders was slightly greater than from solutions and considerably greater than from granules of these materials. Up to ca. 18 % of the nitrogen in the molecule is converted to nitrate within 24 weeks.
In addition a calculation with ECETOC 1983 was performed also with the read across source substance melamine (CAS 108 -78 -1). The calculated DT50 of melamine was determined to be in a range between 2 and 3 years.
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