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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Experimental data
Reference:
Composition 0
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 Tris[5-amino-4-hydroxy-3- (phenylazo)naphthalene-2,7-disulphonato(2-)]dialuminium (CAS No. 68475-50-3 ) 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:
capillary method
Test material information:
Composition 1
Decomposition:
yes
Decomp. temp.:
342.75 - 346.75 °C
Sublimation:
no
Remarks on result:
other: the test chemical started decomposing with colour change from red black at 342.75-346.75° without melting

Method Details

Observations

Remarks if,

any

Guideline

OECD 102

-

 

Method

Capillary/metal block

-

 

Principle of method

The temperature at which a solid becomes a liquid at standard atmospheric

pressure

-

 

Grinding of Test

item done

 

No

 

Atmospheric

pressure

hPa

971.9hPa

 

Decomposition

Decomposition temperature

(°C), if applicable

YES

 

Sublimation

Sublimation temperature

(°C), if applicable

No

 

Mean

Decomposition

Range

(°C)(RESULT)

°C

342.75-346.75°C

 

Conclusions:
The melting point determination of Tris[5-amino-4-hydroxy-3-(phenylazo)naphthalene-2,7- disulphonato(2-)]dialuminium (CAS No. 68475-50-3) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and Mean Decomposition Range (°C) was found to be 342.75-346.75°C at 971.9hPa.
Executive summary:

The melting point determination of Tris[5-amino-4-hydroxy-3-(phenylazo)naphthalene-2,7- disulphonato(2-)]dialuminium (CAS No. 68475-50-3) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and Mean Decomposition Range (°C) was found to be 342.75-346.75°C at 971.9hPa.

Description of key information

The melting point determination of Tris[5-amino-4-hydroxy-3-(phenylazo)naphthalene-2,7- disulphonato(2-)]dialuminium (CAS No. 68475-50-3) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and Mean Decomposition Range (°C) was found to be 342.75-346.75°C at 971.9hPa.

Key value for chemical safety assessment

Additional information

The melting point determination of Tris[5-amino-4-hydroxy-3-(phenylazo)naphthalene-2,7- disulphonato(2-)]dialuminium (CAS No. 68475-50-3) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and Mean Decomposition Range (°C) was found to be 342.75-346.75°C at 971.9hPa.