Registration Dossier
Registration Dossier
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EC number: 225-464-3 | CAS number: 4861-19-2
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Urea adsorption by the soil was found to increase with increasing concentration of added urea-N and adsorption coefficients ranged from 0.037 to 0.064. The potential of phosphoric acid to adsorp is low due to its high water solubility and assumed low partition coefficient.
Key value for chemical safety assessment
Additional information
Urea adsorption by the soil was found to increase with increasing concentration of added urea-N and adsorption coefficients ranged from 0.037 to 0.064. Phosphoric acid is not tested due to its inorganic nature and also QSARs not being applicable to these kind of substances. In addition, due to the high solubility of phosphoric acid and its expected low partition coefficient, the adsorption potential is expected to be low.
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