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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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.

Diss Factsheets

Physical & Chemical properties

Water solubility

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Description of key information

The water solubilities of the 5 aromatic sulphonic acids were all relatively high; ranging from 1117 to 1318 g/L for all except cumene sulphonic acid which had a solubility of 821 g/L.

TSA, Toluene-4-sulphonic acid (EC 203-180-0, CAS 104-15-4): 1154 g/l

XSA, (Xylenes and 4-ethylbenzene) sulphonic acid (EC 701-247-3, CAS -) Former EC 246-839-8: 1156 g/l

CSA, p-cumene sulphonic acid (EC 240-210-1, CAS 16066-35-6): 821 g/l

BSA, Benzene sulphonic acid (EC 202-638-7, CAS 98-11-3): 1117 g/l

HBSA, 4-hydroxybenzensulphonic acid (EC No. 202-691-6, CAS No. 98-67-9): 1318 g/l

A representative value for water solubility of 50000 mg/l has been selected as key value for the Chemical Safety Assessment

Key value for chemical safety assessment

Water solubility:
50 000 mg/L
at the temperature of:
20 °C

Additional information