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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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


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Description of key information

166 mm2/s at 50°C

Key value for chemical safety assessment

166 mm²/s (static)
at the temperature of:
20 °C

Additional information

The viscosity of the 4 aromatic sulphonic acids tested in liquid form ranged from 14 to 166 mm2/s at 50C. One substance has not been tested because it is a solid

The testing was done at 50C and not 20C therefore the value used for chemical safety assessment is not expressed at 20C.