Diallyl 2,2'-oxydiethyl dicarbonate

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

07 SEP - 26 OCT 2009

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

Qualifier:

equivalent or similar to guideline

Guideline:

other: ASTM E537-86

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

Harlan Laboratories Ltd., Derbyshire, UK

Type of method:

differential scanning calorimetry

Atm. press.:

101.59 kPa

Decomposition:

yes

Decomp. temp.:

ca. 402 K

Remarks on result:

other: no value for boiling temperature could be determined experimentally

Boiling pt.:

636 K

Atm. press.:

101.325 kPa

Remarks on result:

other: calculated value of boiling temperature (using the adaptation of the Stein and Brown method, MPBPWIN version 1.43 by US EPA)

1) Thermographic Data

- Determination 1 (at atmospheric pressure: 101.59 kPa):

Thermal Event	Interpretation	Temperature
		°C	K
Approximate onset of exotherm	Approximate onset of decomposition	128.63	402
Extrapolated onset of exotherm	Extrapolated onset of decomposition	146.07	419
Exotherm peak temperature	-	188.56	462

- Determination 2 (at atmospheric pressure: 101.59 kPa):

Thermal Event	Interpretation	Temperature
		°C	K
Approximate onset of exotherm	Approximate onset of decomposition	129.36	403
Extrapolated onset of exotherm	Extrapolated onset of decomposition	146.95	420
Exotherm peak temperature	-	187.25	460

2) Thermograms (for determinations 1 and 2) are shown in Attachment 6.

3) Remarks on results

As a result of the low initial rate of enthalpy change during decomposition, the onset temperature could only be approximated. Similar thermographic profiles were obtained using air and nitrogen atmospheres; this indicated that the observed polymerisation in both determinations was probably thermal and not oxidative.

Finally the initial endothermic event observed, which prevented experimental determination of boiling temperature, may have originated from polymerisation.

Conclusions:

The test material has been determined to decompose from approximately 402 K at 101.59 kPa. As the test material decomposed, no value for boiling temperature could be determined experimentally. However, using an adaptation of the Stein and Brown method, MPBPWIN version 1.43 (by US EPA), the boiling temperature was calculated to be 363°C (636 K).

Executive summary:

The boiling temperature was determined using the differential scanning calorimetry method at atmospheric pressure, EU Method A.2 in a GLP study.

The test material has been determined to decompose from approximately 402 K at 101.59 kPa. As the test material decomposed, no value for boiling temperature could be determined experimentally. A calculated value of boiling temperature gave a result of 636 K at 101.325 kPa [using an adaptation of the Stein and Brown method, MPBPWIN version 1.43 (by US EPA)].

Description of key information

The boiling temperature was determined using the differential scanning calorimetry method at atmospheric pressure, EU Method A.2 in a GLP study.

The test material has been determined to decompose from approximately 402 K at 101.59 kPa. As the test material decomposed, no value for boiling temperature could be determined experimentally. A calculated value of boiling temperature gave a result of 636 K at 101.325 kPa [using an adaptation of the Stein and Brown method, MPBPWIN version 1.43 (by US EPA)].

Key value for chemical safety assessment

Temperature of decomposition (state purity):

129 °C

Additional information

The boiling point of 'diallyl 2,2'-oxydiethyl dicarbonate' is 636K (calculated by MPBPWIN v1.43); no value for boiling temperature could be determined experimentally because decomposition occurred: from approximately 402K at 101.59 kPa (EU Method A.2).