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Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Appearance / physical state / colour:

The appearance of 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was observed as light grey colored crystalline solid organic compound.

Melting point/ Freezing point:

Based on prediction done using MPBPVP v1.43, the melting point of chemical 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was  estimated to be 290.35 ˚C

Boiling point:

Based on prediction done using MPBPVP v1.43, the Boiling point of chemical 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was  estimated to be  666.45 ˚C.

Density:

The density of chemical 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was estimated to be 1.692 ± 0.06 g/cm3, at 20 °C and 760 mmHg pressure.

Particle size distribution (Granulometry):

The particle size distribution of 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 150 micron to 54 micron.

Vapour pressure:

The estimated vapour pressure of the substance 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid at 25 adeg C was 3.42E-017 Pa.

Partition coefficient:

Water solubility:

The estimated water solubility of substance 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid at 25 deg C was 156.9 mg/l.

Surface tension:

The surface tension for chemical 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was predicted to be 88.1 ± 3.0 dyne/cm.

Flash point:

Based on the Calculation done using  scientifically verified and validated formulas / equations, the flash point of chemical 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was estimated to be 435.249 degree C.

Autoflammability:

4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicated that 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid is not auto-flammable.

Flammability:

4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid 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 4-hydroxy-6-(3-sulphoanilino)naphthalene -2-sulphonic acid is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid 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 reports, the appearance of 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was observed as light grey colored crystalline solid organic compound.

Melting point/ Freezing point:

Based on the prediction done using the EPI Suite MPVPBP V1.43, the melting point of chemical -hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was predicted.

The melting point of chemical -hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was estimated to be 290.35 ˚C

Boiling point:

Based on the prediction done using the EPI Suite MPVPBP V1.43, the Boiling point of chemical 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was predicted.

The boiling point of chemical 4-hydroxy-6-(3 -sulphoanilino)naphthalene-2-sulphonic acid was estimated to be 666.45 ˚C.

Density:

Based on prediction done using ACD/I-Lab 2.0 and Scifinder, the density of chemical 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was estimated to be 1.692 ± 0.06 g/cm3, at 20 °C and 760 mmHg pressure.

Particle size distribution (Granulometry):

The particle size distribution of 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 150 micron to 54 micron.

Vapour pressure:

Modified Grain method (Mean of Antoine and Modified Grain methods) was used to estimate the vapour pressure of the substance

4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid using MPBPVP v1.43 of EPI SUITE.

The estimated vapour pressure of the substance 4 -hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid at 25 deg C was 3.42E-017 Pa.

Partition coefficient:

Water solubility:

WSKOW v1.42 was used to estimate the water solubility of the substance 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid

The estimated water solubility of the substance 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid at 25 deg C was 156.9 mg/l

Based on the estimated value, the substance 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was moderately soluble in water.

Surface tension:

Based on the prediction done by ACD labs Software (v12.1.0.50375), the surface tension for chemical 4-hydroxy-6-(3-sulphoanilino) naphthalene-2-sulphonic acid was predicted to be 88.1 ± 3.0 dyne/cm.

Flash point:

Based on the Calculation done using  scientifically verified and validated formulas / equations, the flash point of chemical 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid was estimated to be 435.249 degree C.

Autoflammability:

4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicated that 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid is not auto-flammable.

Flammability:

4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid 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 4-hydroxy-6-(3-sulphoanilino)naphthalene -2-sulphonic acid is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus 4-hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid 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.