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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The physico-chemical properties of 4-(2-hydroxyethyl)piperazin-1-ylethanesulphonic acid have been reviewed and summarized in the table below.


 Property  Value
 Appearance/physical state/colour  white crystalline powder
 Melting point/ freezing point  213 °C (decomp.)
 Boiling point  decomposes (calculated as 408 °C, theoretical)
 Density  1.44 g/cm3 at 20 °C
 Particle size distribution (Granulometry)  D50: 74 μm
 Vapour pressure  3.2*10-8 Pa at 25 °C
 Partition coefficient (log Pow)  < -3.85 at 20 °C
 Water solubility  703.6 g/l at 20 °C
 Surface tension  64 mN/m at 20 °C (conc. 1082 mg/L)
 Flash point  N/A as solid (data waiving)
 Auto flammability  400 °C (self-ignition temp.)
 Flammability  Non-flammable
 Explosiveness  Not explosive
 Oxidising properties  No oxidising properties