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Physical & Chemical properties

Boiling point

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Description of key information

The ASA Category comprises 5 aromatic sulphonic acids and the boiling point are:


TSA, Toluene-4-sulphonic acid (EC 203-180-0, CAS 104-15-4): 223.4 °C


XSA, (Xylenes and 4-ethylbenzene) sulphonic acid (EC 701-247-3, CAS -) Former EC 246-839-8: 182.5 °C


CSA, p-cumene sulphonic acid (EC 240-210-1, CAS 16066-35-6): 170.5 °C


BSA, Benzene sulphonic acid (EC 202-638-7, CAS 98-11-3): 188.2 °C


HBSA, 4-hydroxybenzensulphonic acid (EC No. 202-691-6, CAS No. 98-67-9): 166.7 °C


The lowest value has been has been selected as key value for the Chemical Safety Assessment.
The boiling points for the 5 aromatic sulphonic acids ranged from 167 to 223 °C.


 

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
167 °C

Additional information