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: 701-247-3
CAS number: -
The ASA Category comprises 5 aromatic sulphonic acids and the melting point are:
TSA, Toluene-4-sulphonic acid (EC 203-180-0, CAS 104-15-4): 30 °C
XSA, (Xylenes and 4-ethylbenzene) sulphonic acid (EC 701-247-3, CAS -) Former EC 246-839-8: -23 °C
CSA, p-cumene sulphonic acid (EC 240-210-1, CAS 16066-35-6): 12 °C
BSA, Benzene sulphonic acid (EC 202-638-7, CAS 98-11-3): 12 °C
HBSA, 4-hydroxybenzensulphonic acid (EC No. 202-691-6, CAS No. 98-67-9): -1 °C
The melting/freezing points for the 5 aromatic sulphonic acids were all 30°C or below; the range was -23 to 30 °C. A medium value has been selected as key value for the Chemical Safety Assessment, representing the real impact of those substances in environmental conditions. They are indeed very hygroscopic, then deliquescent even below their melting point. The consequence is that most of them at 25 °C are in fact liquid.
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.
Sellel veebilehel kasutatakse küpsiseid, et tagada lehe parim kasutus.
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