acrylic acid, 3-(trimethoxysilyl)propyl ester

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1994-10-14 to 1995-04-27

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Version / remarks:

The experimental procedure used complied with that specified in Method A2 of Commission Directive 92/69/EEC (which constitutes Annex V of Council Directive 67/548/EEC).

GLP compliance:

yes (incl. QA statement)

Type of method:

distillation method

Key result

Atm. press.:

102 kPa

Decomposition:

yes

Remarks on result:

other: The test substance was observed to boil with decomposition over the range approximately 447 to >514 K at 102 kPa

Results

Determination 1

Vapour temperature (K)	Sample temperature (K)	Observations
290	289	The test material was a clear, very pale yellow liquid.
289	324	There was no change in the test material.
290	344	There was no change in the test material.
290	356	There was no change in the test material.
290	361	There was no change in the test material.
290	375	Condensation formed in the top of the flask.
291	399	There was no change in the test material.
293	415	There was no change in the test material.
293	420	There was no change in the test material.
294	463	There was no change in the test material.
295	469	The test material became darker yellow.
296	485	There was no change in the test material.
297	492	The test material became orange/yellow in colour.
299	495	Condensation moved to the distillation head.
301	502	The test material began to bubble gently.
301	506	The test material was bubbling rapidly, its colour became pale yellow.
311	509	The vapour temperature was rising rapidly.
321	509	A white vapour was evident above the test material.
327	510	There was no change in the test material.
342	513	The white vapours reached the distillation head. The vapour temperature was rising rapidly.
386	513	The vapour temperature was rising rapidly.
487	515	First drop of distillate was collected.
500	516	5 ml of clear, very pale yellow distillate had been collected.
504	517	10 ml of clear, very pale yellow distillate had been collected.
505	519	20 ml of clear, very pale yellow distillate had been collected.
509	521	30 ml of clear, very pale yellow distillate had been collected.
505	523	40 ml of clear, very pale yellow distillate had been collected. The test material was bubbling less vigorously.
504	531	50 ml of clear, very pale yellow distillate had been collected. The test material was a darker yellow colour.
499	543	54 ml of clear, very pale yellow distillate had been collected. The test material was bright yellow.
452	559	55 ml of clear, very pale yellow distillate had been collected. The test material was orange in colour.
448	563	The test material was a dark orange colour. Vapours appeared above the test material.
464	570	The test material was dark red/orange. The vapour temperature began to rise again.
472	572	The test material was a red/brown colour 60 mL of clear very pale yellow distillate had been collected.
479	573	The test material was dark brown. 66 mL of distillate had been collected and was now distilling over as a brighter yellow.
484	575	The test material was a dark orange/brown colour had rapidly increase in volume. 69 mL of distillate had been collected.

 

Result: Boiled with decomposition over the range 487 to > 509 ± 0.5 K leaving a dark orange/brown residue (approximately 70% distillate).

Atmospheric pressure: 102.14 kPa.

Determination 2

Vapour temperature (K)	Sample temperature (K)	Observations
290	290	The test material was a clear, very pale yellow liquid.
291	311	There was no change in the test material.
292	363	There was no change in the test material.
292	374	Condensation formed in the top of the flask.
295	404	There was no change in the test material.
298	430	There was no change in the test material.
303	459	The test material changed to a dark yellow colour
310	478	The test material changed to a darker yellow.
315	490	The test material changed to an orange/yellow colour.
322	495	The test material was bubbling gently.
324	500	The test material changed to a pale yellow colour. White vapours formed above the test material.
333	510	The test material was bubbling rapidly.
388	515	The vapour temperature was rising rapidly.
447	515	First drop of distillate was collected.
501	517	5 mL of a clear very pale yellow distillate was collected.
508	518	10 mL of a clear, very pale yellow distillate was collected.
511	519	20 mL of a clear, very pale yellow distillate was collected.
513	520	30 mL of a clear, very pale yellow distillate was collected.
512	520	40 mL of a clear, very pale yellow distillate was collected.
510	521	49 mL of a clear, very pale yellow distillate was collected. The test material changed to a brighter yellow.
512	523	60 mL of a clear, very pale yellow distillate was collected.
514	527	70 mL of a clear, very pale yellow distillate was collected.
505	557	79 mL of a clear, very pale yellow distillate was collected.
498	563	The test material changed to an orange colour.
482	567	80 mL of a clear, very pale yellow distillate had been collected. The test material changed to a dark orange.
484	572	The test material became red/brown in colour and more viscous, then solidified. 82 mL of distillate had been collected but was now coming off a brighter yellow
439	548	The residual test material was a thick, dark red/brown solid. 85 mL of distillate had been collected.

 

Result: Boiled with decomposition over the range 447 to >514± 0.5 K leaving a decomposed residue (approximately 85% distillate).

Atmospheric pressure: 101.86 kPa.

Overall Result: Boiled over the range approximately 447 to >514 ± 0.5 K at 102 kPa.

Conclusion

The test substance was found to boil with decomposition over the range approximately 447 to >514 ± 0.5 K at an atmospheric pressure of 102 kPa.

Conclusions:

3-(Trimethoxysilyl)propyl acrylate was found to boil with decomposition over the range approximately 447 to >514 ± 0.5 K (174-241°C) at an atmospheric pressure of 102 kPa using a relevant test method and in compliance with GLP. The result is considered to be reliable.

Description of key information

Boiling point: The substance boils with decomposition over the range approximately 447 to > 514 ± 0.5 K (174-241°C) at 102 kPa (EU Method A.2)

Additional information

The boiling point of the substance was attempted using a distillation method in accordance with EU Method A.2 and in compliance with GLP. Under the conditions of the study, the substance was observed to boil with decomposition over the temperature range approximately 447 to > 514 ± 0.5 K (174 - 241°C) at 102 kPa. The result is considered to be reliable.

The measured result is supported by a predicted boiling point of 220°C at 1013 hPa using a validated QSAR estimation method.