Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Appearance:

Chemical 1,4-Diethenylbenzene physically appear as a organic solid.

Melting point:

Melting point of  chemical 1,4-Diethenylbenzene is determine to be  31°C.

Boiling Point:

Boiling point of 1,4-Diethenylbenzene is determine to be 95°C at atmospheric pressure 2.399 kPa.

Density:

Density of chemical 1,4-Diethenylbenzene is determine to be 0.913 g/cm3 at temperature 40°C.

Particle size distribution:

The particle size distribution of 1,4-divinylbenzene was determined by Granulometric analysis with Rotap sieve shaker. The particle size distribution was determine to be in the range of 150 micron to 25 micron.

Vapour pressure:

Vapour pressure of chemical 1,4-Diethenylbenzene is estimated to be 71.060 Pa at temperature 25 Deg C.

Partition coefficient:

Based on the available data from modeling database EPI suite using the KOWWIN V1.68 programme, the estimated logPOW of the chemical 1,4-Bis(ethenyl)benzene was estimated to be 4.46. On the basis of this estimated value, substance 1,4-Bis(ethenyl)benzene can be considered to be hydrophobic in nature.

Water solubility:

Water solubility of chemical 1,4-Diethenylbenzene is determine to be less than 0.001 mg/L therefore it is concluded that chemical is practically insoluble 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. The chemical 1,4-divinylbenzene is a monomer for the preparation of polymer. For this use, surface activity is not an important property. Hence this study was considered for waiver.

Flash point:

Flash point of chemical 1,4-Diethenylbenzene is determine to be 69°C.

Auto flammability:

1,4-divinylbenzene did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that 1,4-divinylbenzene is not auto-flammable.

Flammability:

1,4-divinylbenzene 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 1,4-divinylbenzene is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus 1,4-divinylbenzene 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 since there are no chemical groups associated with explosive properties present in the molecule of 1,4-divinylbenzene. Thus, this end point was considered for waiver and the chemical is considered to be "Non explosive".

Oxidizing properties:

In accordance with column 2 of Annex VII of the REACH regulation, the substance 1,4-divinylbenzene is incapable of reacting exothermically with combustible materials on the basis of the chemical structure. It is an organic substance not containing oxygen and no halogen atom and these elements are not chemically bonded to nitrogen or oxygen. Thus, the chemcial is likely to be "Non-oxidising".

Stability in organic solvents and identity of relevant degradation products:

The study does not need to be conducted because the stability of the substance is not considered to be critical.

Dissociation constant:

The study does not need to be conducted because the substance has no ionic structure.

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

Viscosity:

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

Additional information

Appearance:

Chemical 1,4-Diethenylbenzene physically appear as a organic solid.

Melting point:

Melting point of  chemical 1,4-Diethenylbenzene is determine to be  31°C.

From other reliable sources & authoritative database melting point of  chemical 1,4 -Diethenylbenzene is concluded to be  30-31°C & 28-29 °C.

Boiling Point:

Boiling point of 1,4-Diethenylbenzene is determine to be 95°C at atmospheric pressure 2.399 kPa.

From other reliable sources & authoritative databases boiling point of 1,4 -Diethenylbenzene is concluded to be 95-96°C at atmospheric pressure 2.4 kPa & 52°C at atmospheric pressure 0.5332 kPa.

Density:

Density of chemical 1,4-Diethenylbenzene is determine to be 0.913 g/cm3 at temperature 40°C.

From other reliable sources & authoritative database density of chemical 1,4 -Diethenylbenzene is concluded to be 0.914 g/cm3 at temperature 25°C & 1.5805 g/cm3 at temperature 20°C.

Particle size distribution:

The particle size distribution of 1,4-divinylbenzene was determined by Granulometric analysis with Rotap sieve shaker. The particle size distribution was determine to be in the range of 150 micron to 25 micron.

Vapour pressure:

Vapour pressure of chemical 1,4-Diethenylbenzene is estimated to be 71.060 Pa at temperature 25 Deg C.

Partition coefficient:

Based on the available data from modeling database EPI suite using the KOWWIN V1.68 programme, the estimated logPOW of the chemical 1,4-Bis(ethenyl)benzene was estimated to be 4.46. On the basis of this estimated value, substance 1,4-Bis(ethenyl)benzene can be considered to be hydrophobic in nature.

Water solubility:

Water solubility of chemical 1,4-Diethenylbenzene is determine to be less than 0.001 mg/L therefore it is concluded that chemical is practically insoluble 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. The chemical 1,4-divinylbenzene is a monomer for the preparation of polymer. For this use, surface activity is not an important property. Hence this study was considered for waiver.

Flash point:

Flash point of chemical 1,4-Diethenylbenzene is determine to be 69°C.

Auto flammability:

1,4-divinylbenzene did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that 1,4-divinylbenzene is not auto-flammable.

Flammability:

1,4-divinylbenzene 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 1,4-divinylbenzene is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus 1,4-divinylbenzene 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 since there are no chemical groups associated with explosive properties present in the molecule of 1,4-divinylbenzene. Thus, this end point was considered for waiver and the chemical is considered to be "Non explosive".

Oxidizing properties:

In accordance with column 2 of Annex VII of the REACH regulation, the substance 1,4-divinylbenzene is incapable of reacting exothermically with combustible materials on the basis of the chemical structure. It is an organic substance not containing oxygen and no halogen atom and these elements are not chemically bonded to nitrogen or oxygen. Thus, the chemcial is likely to be "Non-oxidising".

Stability in organic solvents and identity of relevant degradation products:

The study does not need to be conducted because the stability of the substance is not considered to be critical.

Dissociation constant:

The study does not need to be conducted because the substance has no ionic structure.

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

Viscosity:

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