Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

Summary of the phys.-chem. key parameters:

Phys.-chem. Property Key parameter Remarks
Appearance/Physical state/Colour white, crystalline solid
Melting point 464 K
Boiling point ≥ 553 K  decomposition
Density at 20°C 1762.7 g/L
Vapour pressure at 20°C < 0.001 Pa calculated
Partition coefficient at 20°C -4.6 log Pow
Water solubility at 20°C / pH 7.5 534 g/L
Solubility in n-octanol at 20°C 11.7 mg/L
Surface tension at 20°C 69.9 mN/m c = 1 g/L
Autoflammability > 677 K no self-ignition below 404°C
Flammability non flammable
Explosiveness not explosive
Oxidizing properties not oxidizing
Dissociation constant pKa1 = 15.1 (hydroxyl group);
pKa2 = 1.39 (sulfonic acid function)