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EC number: 701-247-3
CAS number: -
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 for Chemical Safety
Assessment has been choosen, representing the real impact of those
substances in environmental conditions. They are indeed very
hygroscopic, then deliquescents even below their melting point. The
consequence is that most of them at 25°C are in fact liquid
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