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EC number: 203-180-0
CAS number: 104-15-4
The surface tension for the 5 aromatic sulphonic acids ranged from 49 to 55 mN/m at 20 °C.
The ASA Category comprises 5 aromatic sulphonic acids and the surface tensions are:
TSA, Toluene-4-sulphonic acid (EC 203-180-0, CAS 104-15-4): 48.769 mN/m at 20°C
XSA, (Xylenes and 4-ethylbenzene) sulphonic acid (EC 701-247-3, CAS -) Former EC 246-839-8: 49.466 mN/m at 20°C
CSA, p-cumene sulphonic acid (EC 240-210-1, CAS 16066-35-6): 53.103 mN/m at 20°C
BSA, Benzene sulphonic acid (EC 202-638-7, CAS 98-11-3): 55.656 mN/m at 20°C
HBSA, 4-hydroxybenzensulphonic acid (EC No. 202-691-6, CAS No. 98-67-9): 52.745 mN/m at 20°C
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