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Description of key information

Appearance / physical state / colour:

The appearance of Acid Yellow 49 (CAS no. 12239-15-5) was observed to be yellow powder organic compound.

Melting point/ Freezing point:

Based on prediction done using MPBPVP v1.43, the melting point of chemical Acid Yellow 49 (CAS no. 12239-15-5) was  estimated to be  265.73 ˚C.

Boiling point:

Based on prediction done using MPBPVP v1.43, the Boiling point of chemical Acid Yellow 49 (CAS no. 12239-15-5) was  estimated to be 613.74 ˚C.

Density:

The density of chemical Acid Yellow 49 (CAS no. 12239-15-5) was estimated to be 1.62 ± 0.1 g/cm3 at 20 °C and 760 mmHg pressure.

Particle size distribution (Granulometry):

The particle size distribution of Acid Yellow 49 (CAS no. 12239-15-5) 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 Acid Yellow 49 (CAS no. 12239-15-5) at 25 deg C was 1.65E-014 Pa.

Partition coefficient:

Octanol water partition coefficient of target chemical 4-[(5-amino-3-methyl-1-phenyl-1H-pyrazol-4-yl)azo]-2,5-dichlorobenzenesulphonic acid (CAS no. 12239 -15 -5) was estimated. The estimated log POW of the chemical 4-[(5-amino-3-methyl-1-phenyl-1H-pyrazol-4-yl)azo]-2,5-dichlorobenzenesulphonic acid was 1.70 . On the basis of estimated value, the this test chemical can be considered as hydrophillic in nature.

Water solubility:

The estimated water solubility of test substance Acid Yellow 49 (CAS no. 12239-15-5) at 25 deg C was 6662.3 mg/l.

Surface tension:

Based on the prediction done by ACD labs, the surface tension for chemical Acid Yellow 49 (CAS no. 12239-15-5) was predicted to be 65.8 ± 7.0 dyne/cm.

Flash point:

Based on the Calculation done using  scientifically verified and validated formulas / equations, the flash point of chemical Acid Yellow 49 (CAS no. 12239-15-5) was estimated to be 389.394 degree C.

Autoflammability:

Acid Yellow 49 (CAS no. 12239-15-5) did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Acid Yellow 49 (CAS no. 12239-15-5) is not auto-flammable.

Flammability:

Acid Yellow 49 (CAS no. 12239-15-5) 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 Acid Yellow 49 (CAS no. 12239-15-5) is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus Acid Yellow 49 (CAS no. 12239-15-5) 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 Acid Yellow 49 (CAS no. 12239-15-5) was observed to be yellow powder organic compound.

Melting point/ Freezing point:

Based on the prediction done using the EPI Suite MPVPBP V1.43, the melting point of chemical Acid Yellow 49 (CAS no. 12239-15-5)

was predicted.

The melting point of chemical Acid Yellow 49 (CAS no. 12239-15-5) was estimated to be 265.73 ˚C

Boiling point:

Based on the prediction done using the EPI Suite MPVPBP V1.43,the Boiling point of chemical Acid Yellow 49 (CAS no. 12239-15-5) was predicted.

The boiling point of chemical Acid Yellow 49 (CAS no. 12239-15-5) was estimated to be 613.74 ˚C.

Density:

Based on prediction done using ACD/I-Lab 2.0 and Scifinder, the density of chemical Acid Yellow 49 (CAS no. 12239-15-5) was estimated to be 1.62 ± 0.1 g/cm3 at 20 °C and 760 mmHg pressure.

Particle size distribution (Granulometry):

The particle size distribution of Acid Yellow 49 (CAS no. 12239-15-5) 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

Acid Yellow 49 (CAS no. 12239-15-5) using MPBPVP v1.43 of EPI SUITE.

The estimated vapour pressure of the test substance Acid Yellow 49 (CAS no. 12239-15-5) at 25 deg C was 1.65E-014 Pa.

Partition coefficient:

Octanol water partition coefficient of target chemical 4-[(5-amino-3-methyl-1-phenyl-1H-pyrazol-4-yl)azo]-2,5-dichlorobenzenesulphonic acid (CAS no. 12239 -15 -5) was estimated. The estimated log POW of the chemical 4-[(5-amino-3-methyl-1-phenyl-1H-pyrazol-4-yl)azo]-2,5-dichlorobenzenesulphonic acid was 1.70 . On the basis of estimated value, the this test chemical can be considered as hydrophillic in nature.

Water solubility:

WATERNT Program (v1.01) was used to estimate the water solubility of the test substance Acid Yellow 49 (CAS no. 12239-15-5).

The estimated water solubility of the test substance Acid Yellow 49 (CAS no. 12239-15-5) at 25 deg C was 6662.3 mg/l.

Based on the estimated value, the test substance Acid Yellow 49 (CAS no. 12239-15-5) was considered to be soluble in water.

Surface tension:

Based on the prediction done by ACD labs Software (v12.1.0.50375), the surface tension for chemical Acid Yellow 49 (CAS no. 12239-15-5)

was predicted to be 65.8 ± 7.0 dyne/cm.

Flash point:

Based on the calculation done using  scientifically verified and validated formulas / equations, the flash point of chemical Acid Yellow 49 (CAS no. 12239-15-5) was estimated to be 389.394 degree C. Thus, according to flash point value the chemical Acid Yellow 49 (CAS no. 12239-15-5) was not classified as flammable.

Autoflammability:

Acid Yellow 49 (CAS no. 12239-15-5) did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Acid Yellow 49 (CAS no. 12239-15-5) is not auto-flammable.

Flammability:

Acid Yellow 49 (CAS no. 12239-15-5) 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 Acid Yellow 49 (CAS no. 12239-15-5) is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus Acid Yellow 49 (CAS no. 12239-15-5) 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.