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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Appearance:

On the basis of observation, it is concluded that chemical 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide physically appear as a solid powder having red colour.

Melting point:

Melting point of chemical 3-hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-N-(3-nitrophenyl)naphthalene-2-carboxamide is determine in the range in between 330 – 340 Deg C.

Boiling Point:

Based on prediction done using MPBPVP v1.43,the Boiling point of 3-hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide was  estimated to be 733.4 Deg C.

Density:

Density of chemical 3-hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-N-(3-nitrophenyl)naphthalene-2-carboxamide is determine to be 1.45 g/cm3.

Particle size distribution:

The particle size distribution of 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 150 micron to 25 micron.

Vapour pressure:

The estimated vapour pressure of 3-hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-N-(3-nitrophenyl)naphthalene-2-carboxamide at 25 deg C was 5E-017 Pa.

Partition coefficient:

Based on the available data from modeling databases using the KOWWIN V1.68 programme, octanol water partition coefficient (log Pow) value of the test substance 3 -hydroxy-4 -[(E)-2 -(2 -methoxy-5 -nitrophenyl)diazen-1 -yl]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide was estimated to be 5.04. On the basis of the estimated value, chemical 3 -hydroxy-4 -[(E)-2 -(2 -methoxy-5 -nitrophenyl)diazen-1 -yl]-N-(3 -nitrophenyl) naphthalene-2 -carboxamide can be considered to be hydrophobic in nature.

Water solubility:

Water solubility of 3-hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-N-(3-nitrophenyl)naphthalene-2-carboxamide (CAS no. 6471-49-4) at 25 deg C was estimated to be 0.0075 mg/l.

Surface tension:

Based on the data from ACD labs, surface tension for chemical 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide was predicted to be 0.0649 N/m.

Flash point:

Flash point of 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide is calculated at 1 atm. Pressure to be 372.8 Deg C.

Auto flammability:

3-hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide is not auto-flammable.

Flammability:

3-hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide 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 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide was considered non-flammable for chemical safety assessment.

Explosiveness:

The study does not need to be conducted because the substance contains chemical groups associated with explosive properties which include oxygen, but the calculated oxygen balance is less than - 200.

Oxidizing properties:

The study does not need to be conducted because the substance is a solid. On the basis of observation, it is concluded that chemical 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide physically appear as a solid powder having red colour.

Additional information

Appearance:

On the basis of observation, it is concluded that chemical 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide physically appear as a solid powder having red colour.

From other authorative database it is concluded that chemical 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide physically appear as a solid powder having red to bluish red powder colour.

Melting point:

Melting point of chemical 3-hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-N-(3-nitrophenyl)naphthalene-2-carboxamide is determine in the range in between 330 – 340 Deg C.

Boiling Point:

Based on the prediction done using the EPI Suite MPVPBP V1.43, the Boiling point of 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide was predicted.

The boiling point of 3-hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-N-(3-nitrophenyl)naphthalene-2-carboxamide was estimated to be 733.4 ˚C.

Density:

Density of chemical 3-hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-N-(3-nitrophenyl)naphthalene-2-carboxamide is determine to be 1.45 g/cm3.

Particle size distribution:

The particle size distribution of 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 150 micron to 25 micron.

Vapour pressure:

Modified Grain method was used to estimate the vapour pressure of 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide using MPBPVP v1.43 of EPI SUITE.

The estimated vapour pressure of 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide at 25 deg C was 5E-017 Pa.

Partition coefficient:

Based on the available data from modeling databases using the KOWWIN V1.68 programme, octanol water partition coefficient (log Pow) value of the test substance 3 -hydroxy-4 -[(E)-2 -(2 -methoxy-5 -nitrophenyl)diazen-1 -yl]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide was estimated to be 5.04. On the basis of the estimated value, chemical 3 -hydroxy-4 -[(E)-2 -(2 -methoxy-5 -nitrophenyl)diazen-1 -yl]-N-(3 -nitrophenyl) naphthalene-2 -carboxamide can be considered to be hydrophobic in nature.

Water solubility:

Water solubility of 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide CAS no. 6471 -49 -4) at 25 deg C was estimated to be 0.0075 mg/l.

From above solubility value, chemical 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide CAS no. 6471 -49 -4) was considered to be insoluble in water.

Surface tension:

Based on the data from ACD labs, surface tension for chemical 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide was predicted to be 0.0649 N/m.

Flash point:

Flash point of 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide is calculated at 1 atm. Pressure to be 372.8 Deg C.

Auto flammability:

3-hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide is not auto-flammable.

Flammability:

3-hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide 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 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide was considered non-flammable for chemical safety assessment.

Explosiveness:

The study does not need to be conducted because the substance contains chemical groups associated with explosive properties which include oxygen, but the calculated oxygen balance is less than - 200.

Oxidizing properties:

The study does not need to be conducted because the substance is a solid. On the basis of observation, it is concluded that chemical 3 -hydroxy-4 -[(2 -methoxy-5 -nitrophenyl)azo]-N-(3 -nitrophenyl)naphthalene-2 -carboxamide physically appear as a solid powder having red colour.