Registration Dossier
Registration Dossier
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EC number: 212-550-0 | CAS number: 825-90-1
Endpoint summary
Administrative data
Description of key information
Additional information
- Sodium 4-hydroxy benzene sulphonic acid is a white solid at 20 °C.
- No melting for the substance was observed until 350 °C.
- The substance was found to have no boiling point until 350 °C.
- Density of the substance was determined to be 1.6557 g/cm³.
- The particle size distribution of the test substance was determined as follows: L10: 141.727 μm; L50: 323.812 μm; L90: 583.429 μm
- The melting point of the substance was determined to be >350 °C, hence the study for vapour pressure determination was considered scientifically not necessary.
- The n-octanol/water partition coefficent of the test item at 20 °C, from the individual solubility in water and n-octanol, was determined to be (log Pow) -2.79.
- The water solubility of the test substance at a temperature of 20 °C was determined to be 92.4 g/L.
- The surface tension of the test substance was determined to be 72.410 mN/m at room temperature ca 20 °C.
- The substance is a high melting point solid >350 °C, hence the flash point is considered to be not relevant.
- No auto-ignition was observed until 550 °C.
- The test item is considered as not highly flammable.
- The substance is considered to be non-explosive.
- As there are no chemical groups present in the molecule associated with oxidising properties, the study for evaluation of oxidising properties is considered scientifically not necessary.
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