Registration Dossier
Registration Dossier
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EC number: 231-511-9 | CAS number: 7601-89-0
Endpoint summary
Administrative data
Description of key information
Additional information
- Appearance/physical state/colour: A white powder at room temperature. Observed in a regulated study.
- Melting Point: 469°C at 1013hPa. A more recent result (472°C) differed from this slightly earlier finding which is assumed to be down to different methods used. However, the result was deemed to be more reliable than much earlier findings (482°C) which had been reported for over 100 years.
- Boiling Point: Not required as melting point > 300°C.
- Density: 2.52 at 20°C from published data.
- Particle size distribution: 1.626 – 2000.000µm, a recent experimental result (2009) using the laser diffraction method.
- Vapour Pressure: Not required as melting point above 300°C.
- Partition coefficient: Not required – the substance is inorganic.
- Water solubility: 2096 mg/Litre at 25°C; 2090 mg/Litre at 20°C and 2840 mg/Litre at 50°C from published literature.
- Surface Tension: Not required as no structure activity is expected based on the structure of the substance.
- Flashpoint: Not required for solids.
- Auto-flammability: Not required as preliminary results exclude self-heating of the substance up to 400°C and melting point >400°C.
- Flammability: Non-flammable. Further testing is considered scientifically unjustified as the chlorine in this substance is in its highest possible oxidation state and is incapable of further reaction with oxygen.
- Explosiveness: Not explosive; further tests not required as the molecule does not contain combustible parts which could react with oxidising chlorate.
- Oxidising properties: Known to be a strong oxidiser and is already classified O.
- Stability in organic solvents and identity of relevant degradation products: Not required as the substance is inorganic.
- Dissociation constant: Not required as the substance does not contain an ionisable functional group.
- Viscosity: Not required as the substance is a solid.
The following physical chemical properties are reported for sodium perchlorate:
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