Synthetic resin, a reaction product of 4,4'-bis(N-maleimido)diphenylmethane with 3-aminobenzoic acid hydrazide

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-05-18 to 2017-07-26

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

adopted 27 July 1995

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Version / remarks:

30 May 2008

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Key result

Decomposition:

yes

Decomp. temp.:

>= 160 °C

Remarks on result:

not determinable

Remarks:

Substance decomposes

A preliminary thermogravimetric measurement was performed over a temperature range from room temperature to approx. 600 °C.

Three steps were registered with maxima at 88 °C, 187 °C resp. 451 °C. A total mass loss of 46.7 % at the final temperature could be observed (mass change in the range until 110 °C: 0.9 %; mass change in the range from 110 to 280 °C: 3.2 %; mass change in the range from 280 to 600 °C: 42.1 %). Mass loss due to purging: 0.5%.

The DSC measurements were performed twice in the temperature range from 20 - 400 °C. To determine a possible boiling point more precisely a crucible lid with a hole of 50 um diameter was used in the measurements to prevent evaporation.

No sharp endothermic peak indicating a melting point could be observed. ln the range of approx. 35 °C there was an indication for a glass transition.

Upon further heating the DSC-curve showed no endothermic peak. The course of the DSC-curve indicated decomposition starting at approx. 160 °C: Reweighing after the measurement showed that the sample had lost 6.7 %/ 7.1 % of its mass. After the first as well as after the second run the residue looked dark-brown discoloured and molten.

Conclusions:

The present study was performed according to OECD Test Guideline 103 (adopted 27 July, 1995) in order to determine the boiling point of Compimide 183. A thermogravimetric measurement and subsequently a differential scanning calorimetry (DSC) was performed. In the course of the thermogravimetric curve three steps were registered with maxima at 88 °C, 187 °C resp. 451 °C. A total mass loss of 46.7 % at the final temperature could be observed (mass change in the range until 110 °C: 0.9 %; mass change in the range from 110 to 280 °C: 3.2 %; mass change in the range from 280 to 600 °C: 42.1 %). Mass loss due to purging: 0.5%. During the DSC no sharp endothermic peak indicating a melting point could be observed. In the range of approx. 35 °C there was an indication for a glass transition. Upon further heating the DSC-curve showed no endothermic peak. The course of the DSC-curve indicated decomposition starting at approx. 160 °C: Reweighing after the measurement showed that the sample had lost 6.7 %/ 7.1 % of its mass. Thus, Compimide 183 is considered to decompose but exhibits no melting or boiling point.

Description of key information

- study conducted according to OECD 103 (adopted 27 July, 1995), thermogravimetric measurement and differential scanning calorimetry, no melting or boiling point, at > 160°C the substance decomposes

Additional information

The present study was performed according to OECD Test Guideline 103 (adopted 27 July, 1995) in order to determine the boiling point of Compimide 183. A thermogravimetric measurement and subsequently a differential scanning calorimetry (DSC) was performed. In the course of the thermogravimetric curve three steps were registered with maxima at 88 °C, 187 °C resp. 451 °C. A total mass loss of 46.7 % at the final temperature could be observed (mass change in the range until 110 °C: 0.9 %; mass change in the range from 110 to 280 °C: 3.2 %; mass change in the range from 280 to 600 °C: 42.1 %). Mass loss due to purging: 0.5%. During the DSC no sharp endothermic peak indicating a melting point could be observed. In the range of approx. 35 °C there was an indication for a glass transition. Upon further heating the DSC-curve showed no endothermic peak. The course of the DSC-curve indicated decomposition starting at approx. 160 °C: Reweighing after the measurement showed that the sample had lost 6.7 %/ 7.1 % of its mass. Thus, Compimide 183 is considered to decompose but exhibits no melting or boiling point.