2,2'-methylenebis[6-(1-methylcyclohexyl)-p-cresol]

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:

23 June 2015 to 10 September 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

data waiving: supporting information

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Version / remarks:

European Community (EC), EC no. 440/2008, Part A: Methods for the Determination of Physico-Chemical Properties, Guideline A.1: “Melting/Freezing Temperature”, Official Journal of the European Union no. L142, May 31, 2008.

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Version / remarks:

Organization for Economic Co-operation and Development (OECD), OECD Guidelines for the Testing of Chemicals no. 102: "Melting Point / Melting Range", July 27, 1995.

Deviations:

no

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7200 (Melting Point / Melting Range)

Version / remarks:

United States Environmental Protection Agency (EPA), Product Properties Test Guidelines no. OPPTS 830.7200: "Melting Point/Melting Range", March 1998.

Deviations:

no

GLP compliance:

yes

Type of method:

differential scanning calorimetry

Specific details on test material used for the study:

Identification: 2,2'-methylenebis[6-(1-methylcyclohexyl)-p-cresol]
Appearance: White to cream powder
Batch: WWP4J0001
Purity/Composition: 92.2%
Test substance storage: At room temperature
Stable under storage conditions until: 03 September 2018 (retest date)
Purity/composition correction factor: Yes, correction factor is according to purity
Test substance handling: No specific handling conditions required

Key result

Melting / freezing pt.:

126 °C

Atm. press.:

1 013.25 hPa

Decomposition:

no

Sublimation:

no

Preliminary test

Starting at 325°C, the weight of the sample decreased significantly. At 365°C, the sample weight had decreased by 25%.

After the experiment, a black molten residue remained in the sample container (original colour: White to cream). The change of the colour indicated reaction and/or decomposition of the test substance.

 

Main study

An endothermic peak between 100°C and 150°C was observed. The extrapolated onset temperature of the peak was 126.24°C. The effect was most likely obtained due to melting of the test substance.

To investigate the melting peak, the temperature program of the second experiment was stopped after the endothermic effect. The extrapolated onset temperature of the melting peak was 126.51°C. After the experiment, a yellow molten residue remained in the sample container.

The melting temperature was determined as the average melting temperature obtained from Experiment 1 (126.24°C) and Experiment 2 (126.51°C).

Conclusions:

The melting temperature of 2,2'-methylenebis[6-(1-methylcyclohexyl)-p-cresol] was determined at 126°C (400*K) by using DSC.

Executive summary:

The aim of the study was to determine the physico-chemical properties for 2,2'-methylenebis[6-(1-methylcyclohexyl)-p-cresol].

 

The study was based on the following guidelines:

European Community (EC), EC no. 440/2008, Part A: Methods for the Determination of Physico- Chemical Properties, Guideline A.1: “Melting/Freezing Temperature”, Official Journal of the European Union no. L142, May 31, 2008.

Organization for Economic Co-operation and Development (OECD), OECD Guidelines for the Testing of Chemicals no. 102: "Melting Point / Melting Range", July 27, 1995.

United States Environmental Protection Agency (EPA), Product Properties Test Guidelines no. OPPTS 830.7200: "Melting Point/Melting Range", March 1998.

 

The melting temperature of the test substance was determined using differential scanning calorimetry (DSC). This technique records the difference in heat flow of two crucibles, one filled with test substance and the other left empty as reference, while these crucibles are subjected to a controlled temperature programme. A transition of the test substance, such as melting or evaporation, is indicated by a deviation from the base line in the heat flow record. Because melting and evaporation are processes in which heat is consumed, the deviation from the base line is in the endothermic direction for these processes. The melting temperature or boiling temperature (if any) of the test substance is evaluated from the DSC curve as the extrapolated onset temperature of the endothermic melting or evaporation peak.

 

The melting temperature of 2,2'-methylenebis[6-(1-methylcyclohexyl)-p-cresol] was determined at 126°C (400*K) by using DSC.

Description of key information

Key value determined in a GLP accredited laboratory study using DSC in accordance with EU Method A.1, OECD Guideline 102 and US EPA Procedure OPPTS 830.7200.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

126 °C