Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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:
From 01 July 2015 to 26 July 2016.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Version / remarks:
1998
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Decomposition:
yes
Decomp. temp.:
225 °C
Remarks on result:
other: no melting/freezing point in the range -90 to 25°C
Remarks on result:
other: Glass transition at -62°C

TGA EXPERIMENT (PRELIMINARY TEST)

From 325°C upwards the weight of the sample decreased significantly. At 385°C the sample weight had decreased by 25%. After the experiment, a black brown molten residue remained in the sample container. Residue was observed on the lid of the sample container. The change of the colour indicated reaction and/or decomposition of the test substance.

 

DSC EXPERIMENT 1

During cooling, a glass transition was observed between -60°C and -80°C. During heating, a glass transition was observed between -75°C and -50°C. The inflection point of the glass transition was -61.76°C. From 225°C an exothermic followed by an endothermic effect was observed. The effect was due to reaction and/or decomposition of the test substance. After the experiment, a brown residue remained in the sample container.

 

DSC EXPERIMENT 2

Similar results as with Experiment 1 were obtained. The inflection point of the glass transition was -61.46°C. After the experiment, a brown residue remained in the sample container.

 

DSC EXPERIMENT 3

To investigate if the test substance did react during the glass transition the temperature program was stopped at 200°C. The inflection point of the glass transition was -61.64°C. After the experiment the sample appeared to have been unchanged, i.e. no decomposition and/or evaporation were observed. 

The glass transition temperature of the substance was calculated as the average from Experiment 1 (-61.76°C), Experiment 2 (-61.46°C) and Experiment 3 (-61.64°C): -62°C.

Conclusions:
PEMP product has no melting/freezing point in the range -90 to 25°C. The glass transition temperature of PEMP product was determined to be -62°C. Reaction and/or decomposition was observed at temperatures > 225°C.
Executive summary:

Differential Scanning Calorimetry experiments were performed in a GLP study according to EC A.1, OECD 102 and OPPTS 830.7200. The substance PEMP product is a liquid at room temperature. The substance has no melting/freezing point in the range -90 to 25°C. From three experiments, a mean glass transition temperature of -62°C was obtained. Reaction and/or decomposition was observed at temperatures > 225°C.

Description of key information

No melting/freezing point in the range -90 to 25°C (EC A.1, OECD 102, OPPTS 830.7200: DSC)

Glass transition temperature: -62°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-20 °C

Additional information

The value of -20°C is the lower limit for melting/freezing point determination according to Column 2 of Annex VII to REACH and was therefore chosen as the key value for CSA.