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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The appearance of Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3 -sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was observed as solid organic compound.

Melting point/ Freezing point:

Based on prediction done using MPBPVP v1.43, the melting point of chemical Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was  estimated to be 349.84 ˚C

Boiling point:

Based on prediction done using MPBPVP v1.43, the Boiling point of chemical Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was  estimated to be 1113.34 ˚C

Density:

The density of Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was determined to be 1.80 g/cm³ at 20°C.

Particle size distribution (Granulometry):

The particle size distribution of Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 146 micron to 51 micron.

Vapour pressure:

The estimated vapour pressure of the substance Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5 -triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate at 25 deg C was 8.19E-035 Pa.

Partition coefficient:

By usingKOWWIN Program (v1.68) of Estimation Program Interface (EPI suite, 2018) the octanol water partition coefficent (log Pow) of chemicalOctasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonatewas estimated to be 4.65 dimensionless at temparature 25oC. By this log Pow value chemicalOctasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonateis considered as hydrophobic in nature.

Water solubility:

The estimated water solubility of substance Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate at 25 deg C was 0.0008703 mg/l

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 Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1 -hydroxy-3 -sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate is used as a dye. For this use, surface activity is not an important property. Hence this study was considered for waiver.

Flash point:

Based on the Calculation done using  scientifically verified and validated formulas / equations, the flash point of chemical Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was estimated to be 873.13 degree C.

Autoflammability:

Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl) azo]]bisnaphthalene-1,5-disulphonate did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl) azo]]bisnaphthalene-1,5-disulphonate is not auto-flammable.

Flammability:

Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl) azo]]bisnaphthalene-1,5-disulphonate 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 Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate 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 Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was observed as solid organic compound.

Melting point/ Freezing point:

Based on the prediction done using the EPI Suite MPVPBP V1.43, the melting point of chemical Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was predicted.

The melting point of chemical Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate 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 Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was predicted.

The boiling point of chemical Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was estimated to be 1113.34 ˚C

Density:

Based on available report, the density of Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2 -diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was determined to be 1.80 g/cm³ at 20°C.

Particle size distribution (Granulometry):

The particle size distribution of Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 146 micron to 51 micron.

Vapour pressure:

Modified Grain method (Mean of Antoine and Modified Grain methods) was used to estimate the vapour pressure of the substance Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate using MPBPVP v1.43 of EPI SUITE.

The estimated vapour pressure of the substance Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate at 25 deg C was 8.19E-035 Pa.

Partition coefficient:

By usingKOWWIN Program (v1.68) of Estimation Program Interface (EPI suite, 2018) the octanol water partition coefficent (log Pow) of chemicalOctasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonatewas estimated to be 4.65 dimensionless at temparature 25oC. By this log Pow value chemicalOctasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonateis considered as hydrophobic in nature.

Water solubility:

WSKOW v1.42 was used to estimate the water solubility of the test substance Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis [imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate.

The estimated water solubility of the substance Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate at 25 deg C was 0.0008703 mg/l.

Based on the estimated value, the substance Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6 -chloro-1,3,5-triazine -4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl) azo]]bisnaphthalene-1,5-disulphonate was considered to be 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 Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1 -hydroxy-3 -sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate is used as a dye. For this use, surface activity is not an important property. Hence this study was considered for waiver.

Flash point:

Based on the calculation done using  scientifically verified and validated formulas / equations, the flash point of chemical Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was estimated to be 873.13 degree C. Thus, according to flash point value the chemical Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino (1-hydroxy-3 -sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate was not classified as flammable.

Autoflammability:

Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl) azo]]bisnaphthalene-1,5-disulphonate did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl) azo]]bisnaphthalene-1,5-disulphonate is not auto-flammable.

Flammability:

Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl) azo]]bisnaphthalene-1,5-disulphonate 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 Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino (6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus Octasodium 2,2'-[(2,2'-disulphonato[1,1'-biphenyl]-4,4'-diyl)bis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino(1-hydroxy-3-sulphonatonaphthalene-6,2-diyl)azo]]bisnaphthalene-1,5-disulphonate 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.