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Physical & Chemical properties

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Description of key information

Appearance:

On the basis of physical observation and using the sense of smell, (4 -(4 - aminophenyl)(4 -iminocyclohexa-2,5 -dienylidene)methyl)-2 -methylaniline hydrochloride (CAS No. 632 -99 -5 ) was observed to be a dark green solid powder.

Melting point:

The melting point determination of Test item (4-(4-aminophenyl)(4-iminocyclohexa-2,5- dienylidene)methyl)-2-methylaniline hydrochloride (CAS No. 632-99-5 ) was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block. The Mean Melting Point was determine to be 249.8°C at 969.1 hPa.

Boiling Point:

The boiling point determination of Test item (4-(4-aminophenyl)(4-iminocyclohexa-2,5 - dienylidene)methyl)-2-methylaniline hydrochloride (CAS No. 632-99-5 ) was done as per the test guideline OECD 103. The method followed was according to Siwoloboff. The boiling point was determine to be greater than 300 °C at 969.8 hPa.

Density:

The density of Test item (4-(4 -aminophenyl)(4-iminocyclohexa-2,5-dienylidene)methyl)-2-methylaniline hydrochloride (CAS No. 632-99- 5 ) was determined following OECD guideline 109 and according to the method adapted from ASTM D 854-02. The mean density of the test item was determine to be 0.6014 g/cm³at 20 °C and 970.1 hPa.

Particle size distribution:

The particle size distribution of test item (4-(4-aminophenyl)(4-iminocyclohexa-2,5-dienylidene)methyl)-2-methylaniline hydrochloride (CAS No. 632-99-5 ) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determine to bein the range of 150 micron to 10 micron.

 

Vapour pressure:

The estimated vapour pressure of (4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride at 25 deg C was 1.97E-12 Pa.

Partition coefficient:

Based on the available data from experimental study report, the partition Coefficient n-octanol/water of chemical (4 -(4 -aminophenyl)(4 -iminocyclohexa-2,5 -dienylidene)methyl)-2 -methylaniline hydrochloride (CAS No. 632 -99 -5) was determined by the Reverse Phase High Performance Liquid Chromatography method according to OECD Guideline No. 117 for testing of Chemicals. A test item solution was prepared by accurately weighing 4 mg of test item and diluted with Methanol up to 10 ml. Thus, the test solution concentration was 400 mg/l. The pH of test substance was 6.3.The reference substances were chosen according to functional similarity with the test substance and calibration graph was prepared was prepared. The reference substances were 4-Acetylpyridine, Acetophenone, Benzophenone, Phenol, 2-Nitrophenol, Nitrobenzene, Naphthalene, n-Butylbenzene, 2,6-Diphenylpyridine having Pow value ranging from 0.5 to 4.9. The Log Pow value of the test chemical (4 -(4 -aminophenyl)(4 -iminocyclohexa-2,5 -dienylidene)methyl)-2 -methylaniline hydrochloride was determined to be 1.632± 0.004 at 25°C. On the basis of this value, the test substance (4 -(4 -aminophenyl)(4 -iminocyclohexa-2,5 -dienylidene)methyl)-2 -methylaniline hydrochloride can be considered to be hydrophilic in nature.

Water solubility:

Water solubility of (4-(4-aminophenyl)(4-iminocyclohexa-2,5-dienylidene)methyl)-2-methylaniline hydrochloride is determine to be 4000 mg/L at 25 Deg C.

Surface tension:

Based on the data from ACD labs, surface tension for (4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride was predicted to be 0.0468 N/m.

Flash point:

The flash point determination of (4-(4-aminophenyl)(4-iminocyclohexa-2,5-dienylidene)methyl)-2- methylaniline hydrochloride (CAS No. 632-99-5)was done following closed cup method using Pensky- Martens flash point apparatus. The test was conducted in duplicate and mean flash point was determine to be 221.5°C at 970.2 hPa.

Auto flammability:

(4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride did not catch fire on being exposed to air at room temperature of 27 °C pressure of 966 hPa. This indicates that  (4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride is not auto-flammable.

Flammability:

(4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride 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-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus (4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride was considered non-flammable.

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.

Oxidizing properties:

The study does not need to be conducted because the organic substance contains oxygen or halogen atoms which are chemically bonded only to carbon or hydrogen and hence, the classification procedure does not need to be applied.

pH :

The pH determination of test item (4-(4-aminophenyl)(4-iminocyclohexa-2,5-dienylidene)methyl)-2- methylaniline hydrochloride (CAS No 632-99-5) was done following OECD guideline 122. pH of 1% w/v dispersion was measured with the help of pH meter and it was observed to be 6.94 at 26.2 °C.

Additional information

Appearance:

On the basis of physical observation and using the sense of smell, (4 -(4 - aminophenyl)(4 -iminocyclohexa-2,5 -dienylidene)methyl)-2 -methylaniline hydrochloride (CAS No. 632 -99 -5 ) was observed to be a dark green solid powder.

From other reliable source & authorative databases it is concluded that (4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride physically appear as a crystalline solid having dark green color.

Melting point:

The melting point determination of Test item (4-(4-aminophenyl)(4-iminocyclohexa-2,5- dienylidene)methyl)-2-methylaniline hydrochloride (CAS No. 632-99-5 ) was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block. The Mean Melting Point was determine to be 249.8°C at 969.1 hPa.

From other reliable sources & authorative databases it is concluded that chemial (4 -(4 -aminophenyl)(4 -imino -cyclohexa-2,5 -dienylidene) methyl)-2-methylaniline hydrochloride melts at 186 Deg C as the temperature increases decomposition starts.

Boiling Point:

The boiling point determination of Test item (4-(4-aminophenyl)(4-iminocyclohexa-2,5 - dienylidene)methyl)-2-methylaniline hydrochloride (CAS No. 632-99-5 ) was done as per the test guideline OECD 103. The method followed was according to Siwoloboff. The boiling point was determine to be greater than 300 °C at 969.8 hPa.

Density:

The density of Test item (4-(4 -aminophenyl)(4-iminocyclohexa-2,5-dienylidene)methyl)-2-methylaniline hydrochloride (CAS No. 632-99- 5 ) was determined following OECD guideline 109 and according to the method adapted from ASTM D 854-02. The mean density of the test item was determine to be 0.6014 g/cm³at 20 °C and 970.1 hPa.

From other reliable sources density of (4-(4-aminophenyl)(4-iminocyclohexa-2,5-dienylidene)methyl)-2-methylaniline hydrochloride concluded to be 1.22 g/cm3 at 20 Deg C.

Particle size distribution:

The particle size distribution of test item (4-(4-aminophenyl)(4-iminocyclohexa-2,5-dienylidene)methyl)-2-methylaniline hydrochloride (CAS No. 632-99-5 ) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determine to bein the range of 150 micron to 10 micron.

 

Vapour pressure:

Modified Grain method was used to estimate the vapour pressure of (4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride using MPBPVP v1.43 of EPI SUITE.

The estimated vapour pressure of (4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride at 25 deg C was 1.97E-12 Pa.

Partition coefficient:

Based on the available data in a key study from experimental study report, the partition Coefficient n-octanol/water of chemical (4 -(4 -aminophenyl)(4 -iminocyclohexa-2,5 -dienylidene)methyl)-2 -methylaniline hydrochloride (CAS No. 632 -99 -5) was determined by the Reverse Phase High Performance Liquid Chromatography method according to OECD Guideline No. 117 for testing of Chemicals. A test item solution was prepared by accurately weighing 4 mg of test item and diluted with Methanol up to 10 ml. Thus, the test solution concentration was 400 mg/l. The pH of test substance was 6.3.The reference substances were chosen according to functional similarity with the test substance and calibration graph was prepared was prepared. The reference substances were 4-Acetylpyridine, Acetophenone, Benzophenone, Phenol, 2-Nitrophenol, Nitrobenzene, Naphthalene, n-Butylbenzene, 2,6-Diphenylpyridine having Pow value ranging from 0.5 to 4.9. The Log Pow value of the test chemical (4 -(4 -aminophenyl)(4 -iminocyclohexa-2,5 -dienylidene)methyl)-2 -methylaniline hydrochloride was determined to be 1.632± 0.004 at 25°C.

Additional supporting study from authoritative databases indicates that the partition coefficient (log Pow) value of the substance (4 -(4 -aminophenyl)(4 -iminocyclohexa-2,5

-dienylidene)methyl)-2 -methylaniline hydrochloride by OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method) was determined to be 1.36.

Thus, based on the available information, the logPow valueof the test substance (4 -(4 -aminophenyl)(4 -iminocyclohexa-2,5 -dienylidene)methyl)-2 -methylaniline hydrochloride ranges from 1.36 to 1.632 ± 0.004, respectively.On the basis of logPow value, chemical (4 -(4 -aminophenyl)(4 -iminocyclohexa-2,5 -dienylidene)methyl)-2 -methylaniline hydrochloride can be considered to be hydrophilic in nature.

Water solubility:

Water solubility of (4-(4-aminophenyl)(4-iminocyclohexa-2,5-dienylidene)methyl)-2-methylaniline hydrochloride is determine to be 4000 mg/L at 25 Deg C.

From other reliable sources & authorative databases water solubility of (4 -(4 -aminophenyl)(4 -iminocyclohexa-2,5 -dienylidene) methyl)-2 -methylaniline hydrochloride concluded in the range between 1000 to 5000 mg/l at temperature 20 deg C.

Surface tension:

Based on the data from ACD labs, surface tension for (4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride was predicted to be 0.0468 N/m.

Flash point:

The flash point determination of (4-(4-aminophenyl)(4-iminocyclohexa-2,5-dienylidene)methyl)-2- methylaniline hydrochloride (CAS No. 632-99-5)was done following closed cup method using Pensky- Martens flash point apparatus. The test was conducted in duplicate and mean flash point was determine to be 221.5°C at 970.2 hPa.

Auto flammability:

(4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride did not catch fire on being exposed to air at room temperature of 27 °C pressure of 966 hPa. This indicates that  (4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride is not auto-flammable.

Flammability:

(4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride 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-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus (4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride was considered non-flammable.

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.

Oxidizing properties:

The study does not need to be conducted because the organic substance contains oxygen or halogen atoms which are chemically bonded only to carbon or hydrogen and hence, the classification procedure does not need to be applied.

pH :

The pH determination of test item (4-(4-aminophenyl)(4-iminocyclohexa-2,5-dienylidene)methyl)-2- methylaniline hydrochloride (CAS No 632-99-5) was done following OECD guideline 122. pH of 1% w/v dispersion was measured with the help of pH meter and it was observed to be 6.94 at 26.2 °C.