Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 239-854-6
CAS number: 15763-76-5
Sodium toluene-4-sulphonate is a member of the Hydrotropes Category, which comprises substances used to solubilise complex formulas in water. It is structurally related to the substances of the OECD SIDS Hydrotopes category, comprising three sub-groups: the methyl, dimethyl and methylethyl benzene sulphonates (or the toluene, xylene and cumene sulphonates). As defined in the ‘Read-Across Justification Document’ section 13, data provided for this category are representative of sodium toluene-4-sulphonate and suitable for assessment purposes. Experimental data for the Hydrotrope category has been evaluated and trends in the environmental fate of these hydrotropes were used to meet the requirements for the biodegradation endpoint.
A ready biodegradation study by Brunswick-Titze (2004) using sodium toluene sulphonate (CAS 657-84-1) in OECD 301B guideline test reported almost complete biodegradation by the end of the 28-day test of 99.8% with more than 60% degradation recorded after 7 days. When supporting studies are considered, it is clear that hydrotropes are biodegradable with most studies achieving greater than 69% and higher degradation rates after 28 days. It is concluded that given the similarity between sodium toluene-4 -sulphonate and the hydrotrope substances tested using the OECD biodegradation test guidelines, as well as similar physico-chemical properties and structure, it is fully expected that sodium toluene-4-sulphonate is readily biodegradable. In addition, the OECD SIDS Report (2006) for the hydrotropes category concluded that “studies across the hydrotropes category demonstrate rapid and complete biodegradation under aerobic conditions and the hydrotropes are considered to be readily biodegradable according to OECD criteria”. The OECD SIDS Report conclusion supports the experimental evidence provided.
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.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again