Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Appearance:

On the basis of physical observation and using the sense of smell, test chemical was observed to be a orange solid powder.

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 Mean decomposition temperature was determine to be 190.6-195.3°C at 978.5 hPa.

Boiling Point:

The study does not need to be conducted because the substance is a solid which decomposes before boiling. 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 Mean decomposition temperature was determine to be 190.6-195.3°C at 978.5 hPa.

Density:

The density of Test item was determined following OECD guideline 109 and according to the method recommended in the International Pharmacopoeia, fourth Edition, 2014. The mean pour density and tapped density of the test item was determine to be 0.4498 g/cm³ and 0.5781 g/cm³ at 20°C and 972.3 hPa.

Particle size distribution:

The particle size distribution of test item was determined by granulometric analysis with rotap sieve shaker. The particle size

distribution of test chemical was determine to be in the range of 150 micron to 53 micron.

Vapour pressure:

The estimated vapour pressure of the test substance at 25 deg C was 4.93E-40 Pa.

Partition coefficient:

Based on the available data from modelling database EPI suite using the KOWWIN V1.68 programme, the estimated logPOW of the test chemical was estimated to be -1.26. On the basis of this estimated value, test chemical can be considered to be hydrophilic in nature.

Water solubility:

The water solubility determination of test item 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 49.513 g/L at 25°C.

Thus test chemical is considered to be very soluble in water.

Surface tension:

In accordance with column 2 of Annex VII of the REACH regulation, the study need only be conducted if surface activity is a desired property of the chemical. test chemical is used as a reactive dye. For this use, surface activity is not an important property. Hence this study was considered for waiver.

Flash point:

The flash point determination of Test item was done. The method was closed cup method using Pensky-Martens Flash Point

Apparatus. The mean flash point of the test item was determine to be greater than 273°C at 971.6 hPa.

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 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 test chemical is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus test chemical was considered non-flammable.

Explosiveness:

The study does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive properties.

Oxidizing properties:

The study does not need to be conducted because the substance is a solid.

pH:

The pH determination of test item was done as per the test guideline OECD 122. The mean pH of the test solution was

determined with the help of digital pH meter. The mean pH was determine to be 4.47 at 26.0 °C.

Additional information

Appearance:

On the basis of physical observation and using the sense of smell, test chemical was observed to be a orange solid powder.

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 Mean decomposition temperature was determine to be 190.6-195.3°C at 978.5 hPa.

Boiling Point:

The study does not need to be conducted because the substance is a solid which decomposes before boiling. 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 Mean decomposition temperature was determine to be 190.6-195.3°C at 978.5 hPa.

Density:

The density of Test item was determined following OECD guideline 109 and according to the method recommended in the International Pharmacopoeia, fourth Edition, 2014. The mean pour density and tapped density of the test item was determine to be 0.4498 g/cm³ and 0.5781 g/cm³ at 20°C and 972.3 hPa.

Particle size distribution:

The particle size distribution of test item was determined by granulometric analysis with rotap sieve shaker. The particle size

distribution of test chemical was determine to be in the range of 150 micron to 53 micron.

Vapour pressure:

Modified Grain method was used to estimate the vapour pressure of the test substance using MPBPVP v1.43 of EPI SUITE.

The estimated vapour pressure of the test substance at 25 deg C was 4.93E-40 Pa.

Partition coefficient:

Based on the available data from modelling database EPI suite using the KOWWIN V1.68 programme, the estimated logPOW of the test chemical was estimated to be -1.26. On the basis of this estimated value, test chemical can be considered to be hydrophilic in nature.

Water solubility:

The water solubility determination of test item 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 49.513 g/L at 25°C.

Thus test chemical is considered to be very soluble in water.

Surface tension:

In accordance with column 2 of Annex VII of the REACH regulation, the study need only be conducted if surface activity is a desired property of the chemical. test chemical is used as a reactive dye. For this use, surface activity is not an important property. Hence this study was considered for waiver.

Flash point:

The flash point determination of Test item was done. The method was closed cup method using Pensky-Martens Flash Point

Apparatus. The mean flash point of the test item was determine to be greater than 273°C at 971.6 hPa.

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 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 test chemical is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus test chemical was considered non-flammable.

Explosiveness:

The study does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive properties.

Oxidizing properties:

The study does not need to be conducted because the substance is a solid.

pH:

The pH determination of test item was done as per the test guideline OECD 122. The mean pH of the test solution was

determined with the help of digital pH meter. The mean pH was determine to be 4.47 at 26.0 °C.