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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physico-chemical properties of the substance were determined from experimental testing. Some endpoints were waived, based on chemical structure.

The substance is a dense solid at ambient temperature, with very low volatility. In water, it is very soluble, with no surface-active potential. Ionisation may occur at very low pH.

It has low potential for bioaccumulation.

It decomposes upon heating, but it is NOT classified as dangerous with regard to physical hazards, based on CLP criteria.

Additional information

Summary of relevant physico-chemical properties:




Slight yellow powder. Marketed as flakes.

Melting point


Boiling point

No bp before decomposition, starting at ca 269°C.


1.54 g/cm3 at 20°C

 Vapour pressure

 0.033 mPa at 25°C

 Partition coefficient (log Kow)

 -0.77 at pH 7.1

 Water solubility

 264 g/L at pH 7.0 (in buffer)

 Surface tension

 73.3 mN/m at 1 g/L

 _Flammable solids

 No ignition in contact with a flame.

 _Contact with air or water

 No pyrophoric properties expected, or release of flammable gas. (waived, based on structure and experience).


 Unlikely for low melting solids (waived, method not applicable).

 Auto flammability

 No relative self-ignition up to 400°C.

 Explosive properties

 Low potential. (waived,based on structure)

 Oxidising properties

 Low potential. (waived, based on structure)

 Self-reactive properties

 Low potential. (waived, based on structure)

 Organic peroxide

 Not a peroxide. (waived, based on structure)
 Corrosion to metals

 (waived, method not applicable)

 Dissociation constant  pKa = 4.1
 Stability in organic solvents  (waived, not expected to be critical)