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EC number: 943-024-5
CAS number: -
The HYDROTOPES Category comprises the following 6 substances: STS - Sodium toluene 4-sulphonate (CAS 657-84-1, EC 211-522-5)SXS - Sodium (xylenes and 4-ethylbenzene) sulphonate (EC 701-037-1)NH4XS - Ammonium (xylenes and 4-ethylbenzene) sulphonate (EC 943-024-5)SCS - Sodium p-cumenesulphonate (CAS 15763-76-5, EC 239-854-6)KCS - Potassium p-cumenesulphonate (CAS 164524-02-1, EC 629-764-9)NH4CS - Ammonium p-cumenesulphonate (CAS 680972-33-2, EC 811-484-5) In addition CaXS (Calcium Xylenesulphonate, CAS 28088-63-3, EC 248-829-9) was evaluated for complete the assessment despite it is not registered under REACH.
No experimental data are existing for the substances of the category.
Soil Adsorption Coefficient has been estimated for all substances with KOCWIN v2.00 and the results are reported below:
STS, CAS: 657-84-1; Koc: 0.3959 l/kg (Kow method)
SXS, CAS: 1300-72-7; Koc: 0.7876 l/kg (Kow method)
NH4XS, CAS: 26447-10-9; Koc: 1.126 l/kg (Kow method)
SCS, CAS: 15763-76-5; Koc: 1.246 l/kg (Kow method)
KCS, CAS: 164524-02-1; Koc: 1.246 l/kg (Kow method)
NH4CS, CAS: 37475-88-0; not estimated
The highest value of SCS has been selected as representative of the category for the chemical safety assessment
In accordance with Column 2 of REACH Annex VIII not required: the substance has a very low logPow and therefore is likely to have a very low potential for absorption. In addition, the substance is readily biodegradable. An indicative value has been calculated with EPIWIN 4.1 to complete the assessment for all the substances. The value 1.246 l/kg has been reported as key value for safety assessment, as conservative case.
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.
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