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Diss Factsheets

Administrative data

melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
12 January2018 - 19 July 2018
1 (reliable without restriction)

Data source

Reference Type:
study report
Report date:

Materials and methods

Test guideline
according to guideline
OECD Guideline 102 (Melting point / Melting Range)
GLP compliance:
Type of method:
pour point

Test material

Constituent 1
Test material form:
semi-solid (amorphous): gel

Results and discussion

Melting / freezing point
Key result
Melting / freezing pt.:
ca. -12 °C
Atm. press.:

Any other information on results incl. tables

Table 1

Observation                            Determination 1                        Determination 2

Stationary point (°C)                              -15                                      -15

Pour point (°C)                                     -12                                       -12

Applicant's summary and conclusion

Melting/Freezing Point. -12 ± 3 °C (261 ± 3 K)
Executive summary:

Melting/Freezing Point. -12 ± 3 °C (261 ± 3 K), by the pour point method, designed to be compatible with Method A.1 Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 102 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

The temperature at which a test item is observed to be no longer mobile is the stationary point. The pour point is then the stationary point plus 3 °C. Temperatures were converted from °C to K using the following equation:

Equation 1

T = t + 273.15

where: T = thermodynamic temperature, Kelvin (K) t = Celsius temperature, degrees Celsius (°C)

The sample from the preliminary test was heated to 46 °C in a water bath set at 48 °C before being allowed to cool in air. At 35 °C the sample was transferred to an ice/water bath maintained at -1 to 2 °C. At 10 °C the sample was transferred to a dry ice/acetone bath maintained at -18 to -15 °C. At -7 °C the sample was transferred to a dry ice/acetone bath maintained at -35 to -32 °C.

Starting at -3 °C and at intervals of 3 °C, the sample was tilted to a horizontal position for a period of 5 seconds during which time the sample was observed for signs of flow. The sample was continued to be observed until the test item was no longer mobile.

The determination was carried out in duplicate.