Registration Dossier
Registration Dossier
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EC number: 242-355-6 | CAS number: 18472-87-2
Endpoint summary
Administrative data
Description of key information
Appearance / physical state / colour
On the basis of physical observation, the test substance was observed to be a red coloured powder.
Melting point
The melting point range determination of test substance was done following OECD Guideline 102 and according to the metal block capillary method. The test item decomposes with colour change from red to black. The test was conducted in replicates and mean decomposition range was determined to be 252 °C-260 °C at 971.9 hPa.
Boiling Point
According to Column II of Annex VII of REACH regulation, the boiling point study does not need to be conducted because the substance is a solid at room temperature and it also decomposes at a temperature of about 252 - 260°C. Hence the endpoint was considered for waiver.
Density
The mean density of test item was determined following OECD Guideline 109 and according to the Pour density and tapped density of powders” recommended in The International Pharmacopoeia, Fourth Edition, 2014 using bulk density apparatus . The mean pour density and tapped density of the test item was determined to be 0.7417 g/cm3 and 0.8711 g/cm3 at 24.5 degC and 972.5 hPa.
Particle size distribution (Granulometry)
The particle size distribution of test substance was determined by Granulometric analysis with Rotap sieve shaker. The particle size distribution was determined to be in the range of 150 micron to 25 micron.
Vapour pressure
The vapor pressure of test substance was estimated to be 3.12E-021 Pa at 25 deg C.
Partition coefficient
The octanol-water partition coefficient (Log Pow) of test substance was determined to be 0.165 at pH 7.22 and temperature at 25 °C.
Water solubility
The test chemical was determined to be soluble in water.
Surface Tension
In accordance with Column 2 of REACH Annex VII, this end point was considered for waiver since surface activity was not a desired property of test substance
Flash point
The flash point determination of test substance was done following closed cup method using Pensky-Martens flash point apparatus. The flash point was determined to be greater than 250 degC at 972.4 hPa.
Auto flammability
The substance is not auto-flammable.
Flammability
test substance 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 test substance is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus test substance was considered non-flammable.
Explosiveness
In accordance with column 2 of Annex VII of the REACH regulation, the study does not need to be conducted because there are no chemical groups associated with explosive properties present in the molecule of test substance. Thus, this end point was considered for waiver and hence the chemical is considered to be "non explosive" for the purpose of chemical safety assessment.
Oxidising properties
The study does not need to be conducted because there are no chemical groups present in the molecule which are associated with oxidising properties and hence, the classification procedure does not need to be applied.
pH
The pH determination of test item was done following OECD guideline 122. pH of 1% w/v solution was measured with the help of pH meter and it was observed to be 8.24 at 24 °C.
Additional information
Appearance / physical state / colour
On the basis of physical observation, the test substance was observed to be a red coloured powder.
Other supporting studies from various handbooks such as SAX’s (2012), Hazardous Chemicals Desk Reference (2008) and Handbook of Acid Base Indicator (2008); also suggests that test substance was observed to be a orange red to brick red coloured crystalline or powdered solid organic substance.
Melting point
The melting point determination of test item was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block.The test item decomposes with colour change from red to black.The decomposition range was determined to be 252 °C-260 °C at 971.9hPa.
Boiling Point
According to Column II of Annex VII of REACH regulation, the boiling point study does not need to be conducted because the test substance is a solid at room temperature and it also decomposes at a temperature of about 252 - 260°C. Hence the endpoint was considered for waiver.
Density
The density of test item was determined following OECD guideline 109 and according to themethod recommended in the International Pharmacopoeia, fourth Edition, 2014.The mean pour density and tapped density of the test item was determined to be0.7417 g/cm3and 0.8711 g/cm3at 24.5oC and 972.5 hPa.
Particle size distribution (Granulometry)
The particle size distribution of test item was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 150 micron to 25 micron.
Vapour pressure
The Modified Grain method was used to estimate the vapour pressure of test substance using MPBPVP v1.43 Program of EPI SUITE. The vapor pressure of test substance was estimated to be 3.12E-021 Pa at 25 deg C.
Partition coefficient
The octanol-water partition coefficient (Log Pow) of test substance was determined to be 0.165 at pH 7.22 and temperature at 25 °C. This value indicates that the substance is hydrophilic.
Water solubility
The water solubility determination of test substance was done as per the shake flask method. The solubility of water was determined to be 726.45 g/L at 31 degC. Thus, it can be concluded that test substance is highly soluble in water.
Other supporting studies from various handbooks such as SAX , Handbook of acid base indicator, and hazardous chemicals desk reference also suggests that the test chemical is soluble in water.
As the experimental data has K1 reliability and the test was performed using standard method of analysis which has the water solubility value of 726.45 mg/L at 31°C., indicating that test substance is moderately soluble in water thus considered as key study for the purpose of chemical safety assessment.
Surface Tension
In accordance with Column 2 of REACH Annex VII, this end point was considered for waiver since surface activity was not a desired property of test substance
Flash point
The flash point determination of test item was done. The method is closed cup method using Pensky-Martens Flash Point Apparatus. The flash point of the test item was found to be greater than 250°C at 972.4 hPa.Therefore, according to CLP regulation the chemical was considered to be non-flammable as the flash point value is > 60 degree C.
Auto flammability
The substance did not catch fire on being exposed to air at room temperature of 27°C and atmospheric pressure of 966 hPa. This indicates that test substance is not auto-flammable.
Flammability
test substance 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 test substance is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus test substance was considered non-flammable.
Explosiveness
In accordance with column 2 of Annex VII of the REACH regulation, the study does not need to be conducted because there are no chemical groups associated with explosive properties present in the test substance.Thus, this end point was considered for waiver and hence the chemical is considered to be "non explosive" for the purpose of chemical safety assessment.
Oxidising properties
The study does not need to be conducted because there are no chemical groups present in the molecule which are associated with oxidising properties and hence, the classification procedure does not need to be applied.
pH
The pH determination of test item test substance was done as per the test guideline OECD 122. The pH of the test solution was determined with the help of digital pH meter. The pH was determined to be 8.24 at 24 °C.
This value indicates that the substance is basic in nature.
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