Registration Dossier
Registration Dossier
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The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 908-552-2 | CAS number: -
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption: screening
- Data waiving:
- other justification
- Justification for data waiving:
- the study does not need to be conducted because the physicochemical properties of the substance indicate that it can be expected to have a low potential for adsorption
- other:
- Justification for type of information:
- NaHS and Na2S will not occur as such in the environment but will be hydrolyzed and/or oxidized, depending on the environmental conditions under consideration. Hydrolysis products (HS- and S2-) and oxidation products (e.g., sulfate) are expected to have no potential for adsorption, based on their negative charge. The third hydrolysis product, H2S, may be sorbed by soil or sediment particles to a certain extent but because the molecule is not positively charged only weak adsorption resulting from electrostatic attraction between negative binding sites and partially positive parts of the molecule may be observed. Considering all this, it can be concluded that no studies are needed for this endpoint.
Data source
Materials and methods
Results and discussion
Applicant's summary and conclusion
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
