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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
Study period:
20-10-2016 – 20-10-2016
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 chemical was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block.
GLP compliance:
no
Type of method:
other: standard laboratory method
Key result
Melting / freezing pt.:
148.5 - 156.3 °C
Atm. press.:
971.7 hPa
Decomposition:
no
Sublimation:
no
Remarks on result:
other: other details not available

Observation Table & Result :

 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 

  

971.0hPa


 Decomposition

 

Decomposition temperature

(°C), if applicable

 No

 Sublimation

 

Sublimation temperature

(°C), if applicable

NO 

 Mean Melting Point

 °C

 148.5 °C - 156.3°C

Conclusions:
The melting point determination of 3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4- yl)azo]-N,N,N-trimethylanilinium chloride (CAS No. 68391-31-1) 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 determined to be 148.5 °C - 156.3°C at 971.7hPa.
Executive summary:

The melting point determination of 3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4- yl)azo]-N,N,N-trimethylanilinium chloride (CAS No. 68391-31-1) 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 determined to be 148.5 °C - 156.3°C at 971.7hPa.

Description of key information

The melting point determination of 3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4- yl)azo]-N,N,N-trimethylanilinium chloride (CAS No. 68391-31-1) 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 found to be 148.5 °C - 156.3°C at 971.7hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
148.5 °C

Additional information

The melting point determination of 3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4- yl)azo]-N,N,N-trimethylanilinium chloride (CAS No. 68391-31-1) 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 found to be 148.5 °C - 156.3°C at 971.7hPa.

From other reliable sources & authoritative dataabses melting point of test chemical is determine to be 163 -169°C.