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Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
26-09-2017 – 26-09-2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard test guidelines
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Principles of method if other than guideline:
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.
GLP compliance:
not specified
Type of method:
other: standard laboratory method
Specific details on test material used for the study:
- Name of test material: 4-[(4-aminophenyl)(4-iminocyclohexa-2,5-dien-1-ilydene) methyl]-2-methyl - benzenamine hydrochloride
- IUPAC name:(4-(4-aminophenyl)(4-imino -cyclohexa-2,5-dienylidene) methyl)-2-methylaniline hydrochloride
- Molecular formula: C20H19N3.ClH
- Molecular weight: 337.852 g/mole
- Smiles notation: C(\c1cc(c(N)cc1)C) (c1ccc(N)cc1) =C1/C =CC(=N)C=C1.Cl
- InChl: 1S/C20H19N3.ClH/c1-13-12-16 (6-11-19(13)23)20(14-2-7-17(21)8-3-14)15-4-9-18(22)10-5-15;/h2-12, 21H, 22-23H2,1H3;1H/b20-14-,21-17?;
- Substance type: Organic
- Physical state: Solid
Key result
Melting / freezing pt.:
249.8 °C
Decomposition:
no
Sublimation:
no
Remarks on result:
other: other details not available

 Method Details    Observations
 Guideline  OECD 102  
 Method  Capillary/metal block  
 Principle of method  

The temperature at which a

solid becomes a liquid at

standard atmospheric

pressure

 
 

Atmospheric

pressure

hPa   
 Decomposition  

Decomposition temperature

(°C), if applicable

 No
 Sublimation  

Sublimation temperature

(°C), if applicable

NO 
 Mean Melting Point  °C  249.8 Deg C
Conclusions:
The melting point determination of (4-(4-aminophenyl)(4-iminocyclohexa-2,5- dienylidene)methyl)-2-methylaniline hydrochloride (CAS No. 632-99-5) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and Mean Melting Point was determine to be 249.8°C at 969.1hPa.
Executive summary:

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.

Description of key information

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.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
249.8 °C

Additional information

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.