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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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
2016
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Version / remarks:
1998
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: PX708164
- Expiration date of the lot/batch: 31 March 2018


STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: At room temperature container flushed with nitrogen
Key result
Melting / freezing pt.:
< -80 °C
Atm. press.:
ca. 1 013.25 hPa
Decomposition:
yes
Decomp. temp.:
> 250 °C

Main Study

The DSC curve obtained with Experiment 1 is shown in Figure 2. During cooling, no effects were observed which were due to crystallization of the test item (results are archived in the raw data). During heating, an endothermic peak was observed starting at 100°C. The endothermic effect was most likely obtained due to evaporation of volatile components (i.e. solvent) of the test item. After the experiment, a yellowish residue remained in the sample container.

A higher end temperature was applied in Experiment 2 to determine reaction and/or decomposition of the resin part of the test item. Figure 3shows the DSC curve obtained. During heating, similar results as in Experiment 1 were obtained. During heating, an endothermic peak was observed between 75°C and 200°C. This endothermic effect was due to evaporation of volatile components (i.e. solvent). An exothermic peak was observed between 250°C and 373°C. After the experiment, an orange/brown residue remained in the sample container. The exothermic effect was, therefore, considered due to reaction and/or decomposition of the test item. 

An additional investigation of the melting temperature of the test item was performed placing two subsamples of the test item for 72 hours at -19.3 ± 0.5°C and at -80.4 ± 1.1°C respectively. It was observed after storage that the test item was a viscous liquid (≤ ‑15°C freezer) and a very viscous liquid (≤ -75°C freezer). According to this it was concluded that the melting temperature of the test item is < -80°C (< 193K).

Conclusions:
The melting temperature of the test item was < -80°C (< 193K) applying a storage experiment in the freezer.
Executive summary:

The melting temperature of Setalux 7002 BX-55 were tested by DSC. The melting temperature of the test item was< -80°C (< 193K) applying a storage experiment in the freezer.

Description of key information

The melting temperature of Setalux 7002 BX-55 was tested by DSC. The melting temperature of the test item was< -80°C (< 193K) applying a storage experiment in the freezer.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-80 °C

Additional information