Nonanoic acid, mixed diesters, with oxybis[propanol] and dodecanoic acid

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:

2019-02-14 to 2019-02-20

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

The study was conducted according to an internationally recognised method, and under GLP. Test substance is adequately characterised. Therefore full validation applies.

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Version / remarks:

1995

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Version / remarks:

2008

Deviations:

no

Principles of method if other than guideline:

not applicable

GLP compliance:

yes (incl. QA statement)

Remarks:

Date of inspection: October 11th - October 12th, 2016 / Date of signature: February 28th, 2017

Type of method:

differential scanning calorimetry

Key result

Melting / freezing pt.:

>= -60 - <= -20 °C

Atm. press.:

1 025 hPa

Decomposition:

no

Results of the DSC-measurements:

Sample weight (mg)	Phase	Range of effect (°C)	Pressure (hPa)
8.78	Cooling	-30 to -35	1025.0
	Heating	-60 to -20 280 to 400
10.93	Cooling	-30 to -35	1025.0
	Heating	-60 to -20 280 to 410

During the cooling phase, an exothermal effect at the temperature of approx. -30 °C was observed, which can be assigned to the freezing of the test item.

During the heating phase a distinct endothermic effect was observed in the temperature range of -60 to -20 °C, which can be assigned to the melting of the test item.

The test item showed a second endothermic signal in the temperature range of approx.280 – 410 °C. No further thermal effects were observed up to the maximum test temperature of 500 °C.

Conclusions:

The determination of the melting point of the test item was performed according to OECD 102 and EU A1 guidelines, by Differential Scanning Calorimetry.
The test item showed a melting range, no melting point. As the test item is an UVCB substance this is considered as normal.
A melting range of -60°C to -20°C was found at 1025 hPa.

Executive summary:

The determination of the melting point of the test item was performed according to OECD 102 and EU A1 guidelines, by Differential Scanning Calorimetry.

The test item showed a melting range, no melting point. As the test item is an UVCB substance this is considered as normal.

A melting range of -60°C to -20°C was found at 1025 hPa.

Description of key information

A melting range of -60°C to -20°C was found at 1025 hPa by Differential Scanning Calorimetry.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

-20 °C

Additional information

A fully reliable experimental study, conducted according to OECD 102/ EU A1 guideline is available.

It is considered as a key study, and the result is retained as key data.