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Appearance / physical state / colour:

The appearance of Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1 -yl]naphthalene -1,5-disulfonate (CAS no. 20298-05-9) was observed to be a solid organic compound.

Melting point/ Freezing point:

Based on prediction done using MPBPVP v1.43, the melting point of chemical Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl] phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) was  estimated to be 349.84 ˚C.

Boiling point:

Based on prediction done using MPBPVP v1.43, the Boiling point of chemical Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl] phenyl} -4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) was  estimated to be 1156.17 ˚C.

Density:

The density of chemical Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl) diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298 -05 -9) was estimated to be 1.81 ± 0.1 g/cm3.

Particle size distribution (Granulometry):

The particle size distribution of Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro- 1H-pyrazol-4-yl) diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 147 micron to 52 micron.

Vapour pressure:

The estimated vapour pressure of the test substance  Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl} -4,5 -dihydro-1H -pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) at 25 deg C was 7.62E-028 Pa.

Partition coefficient:

The octanol water partition coefficinet  log Pow of test chemical Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no.20298-05-9) was estimated to be 0.233 dimensionless. On the basis of this value it is conlcuded that this test chemical is hydrophilic in nature.

Water solubility:

The estimated water solubility of test substance Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl] phenyl}-4,5 -dihydro-1H- pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) at 25 deg C was 0.33 mg/l.

Surface tension:

Based on the prediction done by ACD labs, the surface tension for chemical Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy) ethanesulfonyl] phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) was predicted to be 86.6 ± 7.0 dyne/cm.

Flash point:

Based on the Calculation done using  scientifically verified and validated formulas / equations, the flash point of chemical Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) was estimated to be 919.71 degree C.

Autoflammability:

Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5 -disulfonate did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Trisodium 2 -[(E)-2-(3-methyl-5-oxo-1-{4-[2- (sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl) diazen-1-yl]naphthalene-1,5-disulfonate is not auto-flammable.

Flammability:

Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene- 1,5 -disulfonate 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 Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}- 4,5-dihydro -1H-pyrazol-4-yl)diazen-1-yl]naphthalene- 1,5-disulfonate is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy) ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl) diazen-1-yl]naphthalene-1,5-disulfonate was considered non-flammable for chemical safety assessment.

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.

Oxidising properties:

The study does not need to be conducted because there are no chemical groups present in the molecule which are associated with oxidizing properties and hence the classification procedure does not need to be applied.

Additional information

Appearance / physical state / colour:

Based on available data from obtained report, the appearance of Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy) ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene -1,5-disulfonate (CAS no. 20298-05-9) was observed to be a solid organic compound.

Melting point/ Freezing point:

Based on the prediction done using the EPI Suite MPVPBP V1.43,the melting point of chemical Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl] phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) was predicted.

The melting point of chemical Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl] phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) was estimated to be 349.84 ˚C.

Boiling point:

Based on the prediction done using the EPI Suite MPVPBP V1.43,the Boiling point of chemical Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2 -(sulfonatooxy)ethanesulfonyl]phenyl} -4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) was predicted.

The boiling point of chemical Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl} -4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) was estimated to be 1156.17 ˚C.

Density:

Based on prediction done using ACD/I-Lab 2.0, the density of chemical Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy) ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298 -05 -9) was estimated to be 1.81 ± 0.1 g/cm3.

Particle size distribution (Granulometry):

The particle size distribution of Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro- 1H-pyrazol-4-yl) diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 147 micron to 52 micron.

Vapour pressure:

Modified Grain method (Mean of Antoine and Modified Grain methods) was used to estimate the vapour pressure of the test substance Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl] phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene -1,5 -disulfonate (CAS no. 20298-05-9) using MPBPVP v1.43 of EPI SUITE.

The estimated vapour pressure of the test substance Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl] phenyl}-4,5 -dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) at 25 deg C was 7.62E-028 Pa.

Partition coefficient:

The octanol water partition coefficinet  log Pow of test chemical Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no.20298-05-9) was estimated to be 0.233 dimensionless. On the basis of this value it is conlcuded that this test chemical is hydrophilic in nature.

Water solubility:

WSKOW v1.42 was used to estimate the water solubility of the test substance Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy) ethanesulfonyl] phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9).

The estimated water solubility of the test substance Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl] phenyl}-4,5 -dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) at 25 deg C was 0.33 mg/l.

Based on the estimated value, the test substance Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl] phenyl}-4,5 -dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298-05-9) was considered to be slightly soluble in water.

Surface tension:

Based on the prediction done by ACD labs Software (v12.1.0.50375), the surface tension for chemical

Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene- 1,5 -disulfonate (CAS no. 20298-05-9) was predicted to be 86.6 ± 7.0 dyne/cm.

Flash point:

Based on the Calculation done using  scientifically verified and validated formulas / equations, the flash point of chemical Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5-disulfonate (CAS no. 20298 -05 -9) was estimated to be 919.71 degree C.

Thus, according to flash point value the given chemical was not classified as flammable.

Autoflammability:

Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene-1,5 -disulfonate did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Trisodium 2 -[(E)-2-(3-methyl-5-oxo-1-{4-[2- (sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl) diazen-1-yl]naphthalene-1,5-disulfonate is not auto-flammable.

Flammability:

Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]naphthalene- 1,5 -disulfonate 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 Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy)ethanesulfonyl]phenyl}- 4,5-dihydro -1H-pyrazol-4-yl)diazen-1-yl]naphthalene- 1,5-disulfonate is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus Trisodium 2-[(E)-2-(3-methyl-5-oxo-1-{4-[2-(sulfonatooxy) ethanesulfonyl]phenyl}-4,5-dihydro-1H-pyrazol-4-yl) diazen-1-yl]naphthalene-1,5-disulfonate was considered non-flammable for chemical safety assessment.

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.

Oxidising properties:

The study does not need to be conducted because there are no chemical groups present in the molecule which are associated with oxidizing properties and hence the classification procedure does not need to be applied.