Registration Dossier
Registration Dossier
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EC number: 231-832-4 | CAS number: 7758-09-0
Endpoint summary
Administrative data
Description of key information
Appearance
On the basis of visual perceptual property, test chemical was observed to be a solid white powder in appearance.
Melting point
On the basis of data from study report, the melting point determination of test chemical was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and the mean melting point was determine to be 349.8°C at 971.4 hPa.
Boiling Point
The study does not need to be conducted because the substance is a solid which melts above 300°C.
Density
In an experimental study from study report, the density of test chemical was determined following OECD guideline 109 and according to the method recommended in the International Pharmacopoeia, fourth Edition. The pour density and tapped density of the test chemical was determined to be 0.8337 g/cm³ and 0.8699 g/cm³at 27.6°C and 970.5 hPa.
Particle size distribution
The particle size distribution of test chemical was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determine to be in the range of 150 micron to 53 micron.
Vapour pressure
The study does not need to be conducted because the melting point is above 300°C.
Partition coefficient
The study does not need to be conducted because the substance is inorganic.
Water solubility
Based on the available data from study report, the water solubility determination of test chemical was done as per the OECD guideline 105 by spectrophotometric analytical method as per OECD 101. The solubility of test chemical in water was determine to be 718800 mg/L at 25°C. On the basis of solubility observation, it was consider that the test chemical was very soluble in water.
Surface tension
The study does not need to be conducted because surface activity is not a desired property of the material.
Flash point
The study does not need to be conducted because the substance is inorganic.
Auto flammability
Test chemical did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that the test chemical is not auto-flammable.
Flammability
Test chemical does not indicate any ignition when the flame of bunsen burner having temperature of approximately 950°C is brought in contact with it. Thus it can be concluded that the test chemical is not flammable at high temperature.
Explosiveness
The study does not need to be conducted because the there are no chemical groups present in the molecule which are associated with explosive properties.
Oxidizing properties
Test chemical was observed to have oxidising property since 45.7 ml of KMnO4 was required for getting the end point of the redox titration for 100 g of test chemical.
pH
Based on the available data from study report, the pH determination of test chemical was done following OECD Guideline 122 (Determination of pH, Acidity and Alkalinity). pH of 1% w/v solution was measured with the help of pH meter and it was observed to be 6.65 at 27 °C.
Additional information
Appearance
On the basis of visual perceptual property, test chemical was observed to be a solid white powder in appearance.
Based on the data obtain from various reliable sources, test chemical appears as a white or slightly yellowish, deliquescent prisms or sticks, or hexagonal crystals.
Melting point
On the basis of data from study report, the melting point determination of test chemical was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and the mean melting point was determine to be 349.8°C at 971.4 hPa.
Boiling Point
The study does not need to be conducted because the substance is a solid which melts above 300°C.
Density
In an experimental study from study report, the density of test chemical was determined following OECD guideline 109 and according to the method recommended in the International Pharmacopoeia, fourth Edition. The pour density and tapped density of the test chemical was determined to be 0.8337 g/cm³ and 0.8699 g/cm³at 27.6°C and 970.5 hPa.
From authoritative database and secondary source, the density of test chemical was determined to be 1.92 g/cm3 at 20°C.
In a supporting study from various reliable sources, the density of test chemical was determined to be 1.915 g/cm3.
Particle size distribution
The particle size distribution of test chemical was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determine to be in the range of 150 micron to 53 micron.
Vapour pressure
The study does not need to be conducted because the melting point is above 300°C.
Partition coefficient
The study does not need to be conducted because the substance is inorganic.
Water solubility
Based on the available data from study report, the water solubility determination of test chemical was done as per the OECD guideline 105 by spectrophotometric analytical method as per OECD 101. The solubility of test chemical in water was determine to be 718800 mg/L at 25°C.
On the basis of data from secondary source, the water solubility of test chemical was determined to be 740000 mg/l at 20°C.
Additional study from reliable handbooks indicates that the test chemical is very soluble in water.
Thus, based on above information, water solubility of test chemical ranges from 718800 to 740000 mg/l, respectively; indicating the test chemical as very soluble in water.
Surface tension
The study does not need to be conducted because surface activity is not a desired property of the material.
Flash point
The study does not need to be conducted because the substance is inorganic.
Auto flammability
Test chemical did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that the test chemical is not auto-flammable.
Flammability
Test chemical does not indicate any ignition when the flame of bunsen burner having temperature of approximately 950°C is brought in contact with it. Thus it can be concluded that the test chemical is not flammable at high temperature.
Explosiveness
The study does not need to be conducted because the there are no chemical groups present in the molecule which are associated with explosive properties.
Oxidizing properties
Test chemical was observed to have oxidising property since 45.7 ml of KMnO4 was required for getting the end point of the redox titration for 100 g of test chemical.
pH
Based on the available data from study report, the pH determination of test chemical was done following OECD Guideline 122 (Determination of pH, Acidity and Alkalinity). pH of 1% w/v solution was measured with the help of pH meter and it was observed to be 6.65 at 27 °C.
On the basis of data obtained from authoritative database, the pH of test chemical was determined to be in the range between 7 to 10 at temperature 20 °C & at a concentration of 50 g/L.
Additional study from authoritative database indicates the pH of test chemical in the range between 6 to 9 at concentration 5% solution.
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