Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 232-075-2 | CAS number: 7785-21-9
Endpoint summary
Administrative data
Description of key information
Additional information
Property |
Value |
Substance type |
inorganic compound |
Appearance/physical state/colour |
grey-brown coloured solid |
Melting/freezing point |
>500 °C |
Boiling point (at 1013 hPa) |
>500 °C |
Density at 20⁰C |
Relative density is 1.77 at room temperature |
Particle size distribution |
L50 = 700 µm |
Vapour pressure |
study does not need to be conducted as the melting point is above 300°C |
Partition Coefficient |
Not required, inorganic substance |
Water solubility at 30⁰C |
0.1 g/L at 30.0 °C (loading 20 g) |
Surface Tension at 25⁰C |
Not expected to be surface active |
Flash point |
Not required, inorganic substance |
Self ignition temperature |
Not self heating, no self ignition up to 475 °C |
Flammability |
Not highly flammable; No pyrophoric properties; flammability in contact with water not expected |
Explosiveness |
Not expected to possess explosive properties |
Oxidising properties |
Not expected to possess oxidizing properties |
Stability in organic solvents and identity of relevant degradation products |
Not considered critical for this inorganic substance |
Dissociation constant |
No relevant functional groups, thus considered not relevant |
Viscosity |
Not required, solid substance |
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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