Castor Oil, reaction product with Soybean Oil

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:

2015-02-27 till 2015-07-22

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: OECD Guidelines for Testing of Chemicals, Section 1 – Physical-Chemical Properties No: 113 “Screening Test for Thermal Stability and Stability in Air ” (adopted, 12th May 1981).

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

thermal analysis

Remarks on result:

not determinable

Result:

From -100 °C up to 450 °C no melting point could be observed but a glass transition temperature at -82.6 °C. Between approx. 90 °C and approx. 240 °C a slight exothermic effect was observed. From approx. 250 °C up to 450 °C additional endothermic and exothermic effects could be observed. After the heating process a brownish residue remains in the crucible which indicates a decomposition of the test item.

Conclusions:

From -100 °C up to 450 °C no melting point could be observed but a glass transition temperature at -82.6 °C. Between approx. 90 °C and approx. 240 °C a slight exothermic effect was observed. From approx. 250 °C up to 450 °C additional endothermic and exothermic effects could be observed. After the heating process a brownish residue remains in the crucible which indicates a decomposition of the substance.

Executive summary:

The melting point of the substance was determined according the OECD Gudieline 102 /113 and EU method A.1. By means of Differential Thermal Analysis (DTA) / Differential Scanning Calorimetry (DSC): The sample was weighed in a crucible made of aluminium with perforated lid and placed in a DTA/DSC-system. The sample was cooled down in a DTA/DSC-system to -100 °C, hold for 3 minutes and then heated up to 450 °C (heating rate 5 K/min).

In comparison with an inert sample (empty crucible) the temperature difference and the heat effect is recorded. Any thermal effect corresponds to a baseline deviation.

From -100 °C up to 450 °C no melting point could be observed but a glass transition temperature at -82.6 °C. Between approx. 90 °C and approx. 240 °C a slight exothermic effect was observed. From approx. 250 °C up to 450 °C additional endothermic and exothermic effects could be observed. After the heating process a brownish residue remains in the crucible which indicates a decomposition of the test item.

Description of key information

From -100 °C up to 450 °C no melting point could be observed but a glass transition temperature at -82.6 °C. Between approx. 90 °C and approx. 240 °C a slight exothermic effect was observed. From approx. 250 °C up to 450 °C additional endothermic and exothermic effects could be observed. After the heating process a brownish residue remains in the crucible which indicates a decomposition of the substance.