Reaction product of 2,2'-oxydiethanol and 2-hydroxyethyl acrylate and 2-hydroxyethyl methacrylate and hexan-6-olide and trimethylhexa-1,6-diyl diisocyanate

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

14-Jul-2015 to 24-Jul-2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

GLP guideline study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

GLP compliance:

yes (incl. QA statement)

Remarks:

Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany

Type of method:

differential scanning calorimetry

Key result

Melting / freezing pt.:

< -100 °C

Atm. press.:

ca. 1 004 hPa

Remarks on result:

other: No freezing / melting point at atmospheric pressure down to -100 °C.

Results of the DSC-measurements

In the temperature range of -40 to -10 °C, a very small endothermic effect with an energy of <10 J/g was observed. In the temperature range of 140 – 350 °C an exothermic effect could be detected, with an average decomposition energy of approximately -340 J/g, directly followed by a second exothermic effect in the temperature range of 350 – 450 °C, with an average decomposition energy of approximately -250 J/g.

No.	Sample weight / mg	Onset of Effect / °C	Range of effect / °C	Weight loss / mg	Atmospheric pressure / hPa
PN9175	19.10	-34.21 - -	-40 to -20 (endo) 160 to 350 (exo) 350 – 450 (exo)	18.04	1004.2
PN9176	12.42	-35.06 - -	-40 to -10 (endo) 140 to 350 (exo) 350 – 430 (exo)	11.76	1004.2

 

The endothermic effects which could be observed during the heating phase are very small and do not represent the melting of the test item.

For a verification of the appearance of the test item at approximately -30 °C, a sample of the test item was placed in a freezer at a temperature of -24.8 °C and checked with a spatula after one day. After one day at -24.8 °C the test item appeared as a rubber like sticky mass. It was not solidified.

According to the DSC measurements and the visual verification in the freezer, the test item has no freezing / melting point at atmospheric pressure down to -100 °C. The test item showed only a slight solidification. The test item has no boiling up to its decomposition starting at a temperature of about 140 °C.

Description of key information

No freezing / melting point at atmospheric pressure down to -100 °C at 1004 hPa (OECD 102, A.1.).

Additional information

The melting point of the substance was determined by using Differential Scanning Calorimetry (DSC) method.