4,4'-[isopropylidenebis(4,1-phenyleneoxy)]dianiline

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

3 July 2017 to 18 July 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Deviations:

not specified

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

not specified

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7220 (Boiling Point / Boiling Range)

Deviations:

not specified

GLP compliance:

yes (incl. QA statement)

Remarks:

Health Care Inspectorate of the Ministry of Health, Welfare and Sport; Utrecht, The Netherlands

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

4,4'-[isopropylidenebis(4,1-phenyleneoxy)]dianiline

EC Number:

235-985-8

EC Name:

4,4'-[isopropylidenebis(4,1-phenyleneoxy)]dianiline

Cas Number:

13080-86-9

Molecular formula:

C27H26N2O2

IUPAC Name:

4,4'-[isopropylidenebis(4,1-phenyleneoxy)]dianiline

Results and discussion

Boiling point

Atm. press.:

1 013.25 hPa

Decomposition:

yes

Remarks:

reaction and/or decomposition at > 275 ºC.

Decomp. temp.:

> 275 °C

Any other information on results incl. tables

Preliminary Test

The TGA curve of the test item started at 400 °C, beyond this temperature the weight of the sample decreased significantly. At 476 °C, the sample weight had decreased by 25%.

After the experiment, a brown molten residue remained in the sample container (original colour: white). The change of the colour indicated reaction and/or decomposition of the test item.

Main Study

An endothermic peak in the DSC curve was observed between 100 °C and 150 °C. The extrapolated onset temperature of the peak was 131.225 °C. The endothermic effect was most likely obtained due to melting of the test item. From 275 °C a small exothermic effect was observed. The effect was probably obtained due to reaction and/or decomposition of the test item.

After the experiment, a light yellow molten residue remained in the sample container (original colour: white). The change of the colour indicated reaction and/or decomposition of the test item. Based on this visual observation, it was found that the test item had molten and the change of the colour demonstrated reaction and/or decomposition of the test item.

In order to investigate the melting peak, Experiment 2 was stopped directly after the melting peak. The extrapolated onset temperature was 133.416°C. After the experiment, a colourless molten residue remained in the sample container. Based on this visual observation, it demonstrated that melting was the reason for the endothermic effect.

Conclusion

The boiling temperature of 4,4'-[isopropylidenebis(4,1-phenyleneoxy)]dianiline were determined by DSC. Reaction and/or decomposition of the test item was observed during DSC experiment at temperatures of > 275 °C (> 548K). Boiling of the test item was not observed below the temperature at which reaction and/or decomposition started. Based on this, the test item has no boiling temperature.