Registration Dossier
Registration Dossier
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EC number: 914-103-1 | CAS number: -
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
A significant adsorption of the substances to soil and suspended matter is not expected.
Key value for chemical safety assessment
Additional information
A significant adsorption of the substances to soil and suspended matter is not expected.
In the environment ammonium sulphate, potassium sulfate and sodium sulphate are expected to exist mainly in the dissociated form. Generally a high mobility of the dissociated ions in soil is expected. This assumption is mainly based on two factors i.e. the high water solubility and the predominantly negative charge of the ions.
In contrast to sodium and potassium ammonium is expected to potentially adsorb to soil and suspended particles due to the attraction of the positive charge on the ammonium ion to the negatively charged soil micelles. However, in soil as well as in water ammonium is expected to be oxidised to nitrate by nitrifying bacteria. The adsorption potential of the negatively charged nitrate to soil particles is expected to be low.
Thus, adsorption of the substances to soil or suspended particles is expected to be of minor relevance under environmentally relevant conditions.
References:
OECD (2007a). SIDS Initial Assessment Report. Ammonium sulfate, CAS No 7783-20-2. UNEP publications.
Health; Environmental and Workplace Health (2001). Priority substances list assessment report for Ammonia in the environment. http: //www. hc-sc. gc. ca
OECD (2005). SIDS Initial Assessment Report. Sodium sulfate, CAS No 7757-82-6. UNEP publications.
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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