1,3-Isobenzofurandione, hexahydro-, reaction products with epichlorohydrin

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:

28 November 2011- 03 February 2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: The study has been performed according to OECD and EC guidelines and according to the principles of GLP.

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Version / remarks:

(2008)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Version / remarks:

(1995)

Deviations:

no

GLP compliance:

yes

Type of method:

thermal analysis

Melting / freezing pt.:

-46 °C

Decomposition:

yes

Decomp. temp.:

> 200 °C

Remarks on result:

other: glass transition

Melting / freezing pt.:

228 K

Decomposition:

yes

Decomp. temp.:

> 473 K

Remarks on result:

other: glass transition

Preliminary TGA:

From 300°C upwards the weight of the sample decreased significantly. At 351°C, the sample weight had decreased by 25%. After the experiment, brown residue was observed on the lid of the sample container and a brown residue remained in the sample container (original colour: colourless). The change of the colour indicated reaction and/or decomposition of the test substance. The TGA-curve of the test substance is shown in Figure 4 of the study report (see attached document).

DSC experiments:

During cooling, a glass transition was observed between -40°C and -75°C.

Experiment 1: During heating, a glass transition between -75°C and -25°C was observed. The inflection point of the glass transition (macroscopically equivalent to the melting point) of the test substance was -45.62°C. An exothermic peak was observed from 200°C. The effect was due to reaction and/or decomposition of the test substance. After the experiment, a yellow residue remained in the sample container. The change of the colour indicated reaction and/or decomposition of the test substance. DSC curve: Figure 5 (see attached document).

Experiment 2: Similar results to the first experiment were obtained. The inflection point of the glass transition was -45.50°C. After the experiment, the sample appeared to have been unchanged, i.e. no decomposition and/or evaporation were observed. DSC curve: Figure 6 (see attached document).

Conclusions:

The melting temperature (glass transition) of bis(2,3-epoxypropyl) cyclohexane-1,2-dicarboxylate is -46°C. Decomposition occurs at temperatures > 200°C.

Description of key information

The melting temperature (glass transition) of bis(2,3-epoxypropyl) cyclohexane-1,2-dicarboxylate is -46°C. 

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

-46 °C

Additional information

The melting temperature (glass transition) of bis(2,3-epoxypropyl) cyclohexane-1,2-dicarboxylate is -46°C. Decomposition occurs at temperatures > 200°C.