Bis(2,3-epoxypropyl) cyclohex-4-ene-1,2-dicarboxylate

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental starting date: 21 May 2014 and Experimental Completion date: 24 September 2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

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.:

257 °C

Remarks on result:

other: As the test item decomposed, no value for boiling temperature could be determined.

The thermographic data for the determination 1 to 4 are shown in the following table:

Determination	Atmosphere	Thermal Event	Interpretation	Temperature °C	Temperature K
1	Nitrogen	Exotherm	Decomposition - Start	270	543
1	Nitrogen	Exotherm	Decomposition - Onset	286	560
2	Nitrogen	Exotherm	Decomposition - Start	275	548
2	Nitrogen	Exotherm	Decomposition - Onset	301	575
3	Air	Exotherm	Decomposition - Start	265	539
3	Air	Exotherm	Decomposition - Onset	291	564
4	Air	Exotherm	Decomposition - Start	257	530
4	Air	Exotherm	Decomposition - Onset	287	560

Atmospheric pressure: 101.1 kPa

After heating to 450°C, the residue had only lost approximately 10% of its original weight.

Overall result: Decomposition from approximately 257°C (530K)

DISCUSSION:

The start of the exothermic peak has been taken as the start of the decomposition rather than the onset temperature (range:286 to 301°C) as by this temperature there had already been a significant change in heat flow indicating that an exothermic reaction was already accuring prior to the onset temperature.

As a result of the low rate of enthalpy change during decomposititon, the start of decomposition could only be approximated.

Similar thermographic profiles were obtained using air and nitrogen atmospheres; this indicated the the observed decomposition in both determinations was probably thermal and not oxidative.

CONCLUSION:

The test item has been determined to decompose from approximately 257°C (530K) at 101.0kPa.

As the test item decomposed, no value for boiling temperature could be detremined.

Conclusions:

The test item has been determined to decompose from approximately 257°C (530K) at 101.0kPa.
As the test item decomposed, no value for boiling temperature could be detremined.

Executive summary:

Boiling temperature: Decomposed from approximately 257°C (530K) at 101.0kPa by differential scanning calorimetry using ASTM E537 -86, designed to be compatible with Method A2 Boiling Temperature of Commission Regulation (EC) N°440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. As the test item decomposed, no value for boiling temperature could be determined.

Additional information

Boiling temperature:Decomposed from approximately 257°C (530K) at 101.0kPa by differential scanning calorimetry using ASTM E537 -86, designed to be compatible with Method A2 Boiling Temperature of Commission Regulation (EC) N°440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. As the test item decomposed, no value for boiling temperature could be determined.