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:
October 19, 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
CAS No.: 79-42-5; EINECS No.: 201-206-5; Purity: >98 %; Lot No.: Batch: 56035 from 15/09/2016; Batch: 56631 from 25/10/2016; Batch: 58208 from 27/02/2017
Key result
Melting / freezing pt.:
16.49 °C
Atm. press.:
1 013 hPa
Decomposition:
no
Sublimation:
no
Remarks on result:
other: +/- 0.43°C

Melting temperatures extracted from extrapolated peak

Run 1, batch 56035: 16.43 °C

Run 2, batch 56631: 16.09 °C

Run 3, batch 58208: 16.95 °C

Mean Value 16.49 °C, with standard deviation 16.49 °C +/- 0.43 °C (289.64 +/- 0.43 K)

Conclusions:
Under the study conditions, the mean melting/freezing temperature has been determined to be 16.49 °C +/- 0.43 °C (289.64 +/- 0.43 K).

Executive summary:

A study was conducted to determine the melting point of the test substance using differential scanning calorimetry according to OECD Guideline 102 and EU Method A.1. Three runs were performed using 40 μL crucibles and 12.26, 16.00, 15.45 mg of the test substance, respectively. The measurements temperature was ranging from -30 °C to 40 °C and heating rate was 5 °/min. Under the study conditions, the mean melting/freezing temperature has been determined to be 16.49 °C +/- 0.43 °C (289.64 +/- 0.43 K) (Stannek, 2017).

Description of key information

The melting point was determined according to OECD Guideline 102 and EU Method A.1 (Stannek, 2017).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
16.49 °C

Additional information