1,4-Cyclohexanedicarboxylic acid, 1,4-bis[4-[6-[(1-oxo-2-propen-1-yl)oxy]hexyl]phenyl] ester, trans-

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:

August 10,2018 - August 14,2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

GLP compliance:

no

Type of method:

differential scanning calorimetry

Specific details on test material used for the study:

The sample was tested as received. No further preliminary treatment such as drying or milling was performed.

Key result

Melting / freezing pt.:

85.6 °C

Atm. press.:

1 013.25 hPa

Decomposition:

no

Sublimation:

no

Three DSC measurements with a heating rate of 10 K/min showed an endothermal effect (melting) in the temperature range of 75-110°C. Additionally the first measurement also showed an exothermal effect (175 - 225 °C) and another endothermal effect (360 - 500 °C). The onset temperature (see Table 1) was derived from the intersection of the tangent line with the highest slope of the endothermal peak with the baseline.

Table 1: Melting Point (DSC measurements)

Ident No.	Test item / mg	Starting temperature / °C	Final test temperature / °C	Temperature range (endothermal) / °C	Onset (melting) / °C	Crucible	Observations after the measurement
38142	8.46	25	500	75 - 110	85.47	Aluminium with a hole	----
38143	9.39	25	95	80 - 95	85.71	Aluminium with a hole	Test item was a solidified melt, no mass loss
38146	11.35	25	140	75 - 105	85.53	Aluminium with a hole	Test item was a solidified melt, no mass loss

The endothermal effect consisted of two steps. However as the test item was already a melt after the first step only this was considered for the melting point. The test item had a melting point of 85.6 °C.

Conclusions:

The test item had a mean melting point of 85.6 °C.

Executive summary:

A study was conducted according to OECD TG 102 and Regulation (EC) No 440/2008 method A.1 to determine the melting point of the test item using differential scanning calorimetry. The test item was weighed into an aluminium crucible under an inert atmosphere (nitrogen). Open crucibles are used as containers for the test item and asThree DSC measurements with a heating rate of 10 K/min showed an endothermal effect (melting) in the temperature range of 75-110°C. Additionally the first measurement also showed an exothermal effect (175 – 225°C) and another endothermal effect (360 – 500°C). The endothermal effect consisted of two steps. However as the test item was already a melt after the first step only this was considered for the melting point. The test item had a melting point of 85.6 °C.

Description of key information

The test item had a mean melting point of 85.6 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

85.6 °C

Additional information

A study was conducted according to OECD TG 102 and Regulation (EC) No 440/2008 method A.1 to determine the melting point of the test item using differential scanning calorimetry. The test item was weighed into an aluminium crucible under an inert atmosphere (nitrogen). Open crucibles are used as containers for the test item and asThree DSC measurements with a heating rate of 10 K/min showed an endothermal effect (melting) in the temperature range of 75-110°C. Additionally the first measurement also showed an exothermal effect (175 – 225°C) and another endothermal effect (360 – 500°C). The endothermal effect consisted of two steps. However as the test item was already a melt after the first step only this was considered for the melting point. The test item had a melting point of 85.6 °C (reference 4.2 -1).