Reaction products of m-phenylenebis(methylamine) with 2,2'-[(1-methylethylidene)bis(4,1-phenyleneoxymethylene)]bisoxirane

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

06 February 2018 - 09 March 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Version / remarks:

2016

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Version / remarks:

1995

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7200 (Melting Point / Melting Range)

Version / remarks:

1998

Deviations:

no

GLP compliance:

yes

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

4,4'-Isopropylidenediphenol, oligomeric reaction products with 1-chloro-2,3- epoxypropane, reaction products with mphenylenebis(methylamine)

Cas Number:

113930-69-1

IUPAC Name:

4,4'-Isopropylidenediphenol, oligomeric reaction products with 1-chloro-2,3- epoxypropane, reaction products with mphenylenebis(methylamine)

Test material form:

solid

Details on test material:

- Physical appearance: light amber solid
- Storage of test material: at room temperature

Results and discussion

Melting / freezing point

Key result

Decomposition:

yes

Decomp. temp.:

275 °C

Remarks on result:

other: Glass transition point: 11.0°C. No melting/freezing point was determined between -50°C and decomposition.

Any other information on results incl. tables

TGA EXPERIMENT (PRELIMINARY TEST)

Significant decrease of weight from 125°C upwards. 25% weight loss at 366°C and 70% weight loss at 466°C.

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

 

DSC EXPERIMENT 1

A glass transition was observed between -25°C and 25°C. The inflection point of the glass transition was 10.762°C. An endothermic peak was observed between 50°C and 175°C. The endothermic effect was most likely caused by evaporation of volatile components and glass transitions (the glass transitions could not be determined). An exothermic peak was observed starting at 275°C. The exothermic effect was probably obtained due to reaction and/or decomposition of the test item. After the experiment, a brown molten residue remained in the sample container.

DSC EXPERIMENT 2

To investigate the effectsbetween 50°C and 175°C,a repeated heating cycle was applied in Experiment 2. With the first heating theinflection point of the glass transition was 11.186°C. During cooling, a glass transition between -25°C and 25°C was found (results are archived in the raw data). With the second heating, the inflection point was 17.949°C. This inflection point was not used for calculating the melting temperature, since it was obtained during the second heating of the experiment. The endothermic effect was not observed during the second heating, indicating that evaporation of volatile components was the reason for the effect. After the experiment, a yellow/brown molten residue remained in the sample container.

DATA HANDLING

The glass transition temperature was determined as the mean inflection point of Experiment 1 and Experiment 2.

 

DSC/TGA curves recorded during heating: see Illustration

Applicant's summary and conclusion

Conclusions:

A glass transition temperature of 11.0°C was determined. The substance has no melting/freezing temperature between -50°C and decomposition at 275°C

Executive summary:

Differential Scanning Calorimetry (DSC) experiments were performed in a GLP study according to EC A.1, OECD 102 and OPPTS 830.7200.

The substance has no melting/freezing temperature between -50°C and decomposition. From duplicate measurements the mean glass transition temperature was determined to be 11.0°C.

Reaction and/or decomposition of the substance started at 275°C.