Registration Dossier

Physical & Chemical properties

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
22 Aug 1995 to 31 Aug 1995
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
May 1981
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
December 1992
GLP compliance:
yes
Type of method:
capillary method
Key result
Melting / freezing pt.:
139.1 °C

RESULTS

Substance

Melting point (°C) Individual

Melting point (°C) Expected

Benzoic acid – 1st determination

122.3

 

Benzoic acid – 2nd determination

122.5

 

Benzoic acid – 3rd determination

122.4

 

Average

122.4

122.4

Substance

Melting point (°C) Individual

Melting point (°C) Expected

Test substance – 1st determination

138.9

139.0

Test substance – 2nd determination

138.9

139.3

Test substance – 3rd determination

138.9

138.9

Average

138.9

139.1

As the difference between the temperature at the beginning and the end of melting is within the limits of the accuracy of the method, the temperature at the end of melting is taken as the melting temperature.

The accuracy of the determination was estimated to be about ± 0.4 °C.

Conclusions:
The melting point of the test substance was determined to be 139.1 °C.
Executive summary:

The study was performed to determine the melting temperature of the test item according to OECD TG 102 and in compliance with GLP. The mean melting temperature of the test item was determined to be 139.1 °C (412.3 K) from the three determinations performed. The accuracy of the determination was estimated to be about ± 0.4 °C.

Description of key information

139.1 °C, OECD 102, capillary method, Das 1995

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
139.1 °C

Additional information