Registration Dossier

Physical & Chemical properties

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
16 - 18 Dez 2009
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods with acceptable restrictions
Qualifier:
according to guideline
Guideline:
other: ASTM E737-76
GLP compliance:
no
Type of method:
differential scanning calorimetry
Melting / freezing pt.:
> 300 °C
Atm. press.:
101 kPa
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
26 Nov 2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
GLP compliance:
yes (incl. QA statement)
Remarks:
Buerau for Chemical Substances and Preparations, Łódź, Poland
Type of method:
capillary method
Melting / freezing pt.:
>= 150 - <= 159 °C
Atm. press.:
102.1 kPa
Remarks on result:
other: 423 - 432 K

The measuring accuracy was addicted to BŰCHI Melting Point 545 apparatus accuracy (measuring accuracy up to 373.15 K - ± 0.3 K; up to 523.15 K - ± 0.5 K and up to 673.15 K - ± 0.8 K) and equal to ± 0.8 K.

The results of three measurements were showed in following table:

Sample

Initial value of melting point, K

Final value of melting point, K

Atmospheric pressure, kPa

1

423.2

432.3

102.1

2

423.2

433.3

102.1

3

423.3

430.2

102.1

Average values ± standard deviations, K

423.2 ± 0.1

431.9 ± 1.6

102.1

Description of key information

The melting point is > 300 °C at 101 kPa (2 EO, ASTM E 737-76) or is from 150 - 158 °C at 102 kPa (1 EO, EU A.1.).

Key value for chemical safety assessment

Additional information

The values for melting point are taken from the study report and company data.