4-methyl-4-phenylpentan-2-one

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:

10 February 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

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)

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7200 (Melting Point / Melting Range)

Qualifier:

according to guideline

Guideline:

other: CIPAC MT 1 (2009): Freezing Point

GLP compliance:

no

Type of method:

differential scanning calorimetry

Key result

Melting / freezing pt.:

>= -27 - <= -20 °C

Atm. press.:

1 009 hPa

Results

In the temperature range of -30 to -10 °C an endothermic effect (melting), was observed. Between approx. 110 – 260 °C a second endothermic effect (boiling) could be detected.

 

Results of the DSC-measurements

No.	Sample weight / mg	Onset of Effect / °C	Range of effect / °C	Weight loss / mg	Atmospheric pressure / hPa
PN12826	15.76	-27.17 251.07	-30 to -10 (endo) 110 to 260 (endo)	15.66	1009.0
PN12827	14.64	-20.14 243.15	-20 to -10 (endo) 120 to 260 (endo)	14.56	1009.0

 

During the cooling phase, no thermal effects were observed in the temperature range from -100 to 25 °C.

During the subsequent heating phase, an exothermal effect in the temperature range of -60 to -40 °C was observed, which can be assigned to the freezing of the test item. An endothermic effect was observed in the temperature range of -30 to -10 °C, which can be assigned to the melting of the test item. As the onset temperatures in both tests deviate by more than 0.5 K from their mean value of -23.66 °C, the test item has a melting range of -27 to -20 °C.

The test item showed a second endothermic signal in the temperature range of approx. 110 – 260 °C that can be assigned to the boiling of the test item. No further thermal effects were observed up to the maximum test temperature of 500 °C.

 

Final Results

The test item has a melting range of -27 to -20 °C at atmospheric pressure (1009 hPa) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).

Conclusions:

A melting range of -27 to -20 °C (at 1009 hPa) was determined for the test substance according to E.U. Method A.1.

Description of key information

Melting range: -27 to -20 °C at 1009 hPa (E.U. Method A.1., differential scanning calorimetry)