ε-Caprolactone, oligomers, esters with acrylic acid and 2,2,2',2'-tetrakis (hydroxymethyl)-3,3'-oxydipropan-1-ol

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Test guideline 1

Qualifier:

equivalent or similar to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Version / remarks:

2008

Test guideline 2

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

1995

Test guideline 3

Qualifier:

equivalent or similar to guideline

Guideline:

EPA OPPTS 830.7220 (Boiling Point / Boiling Range)

Version / remarks:

1996

GLP compliance:

yes (incl. QA statement)

Remarks:

MHRA

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

ε-Caprolactone, oligomers, esters with acrylic acid and 2,2,2',2'-tetrakis (hydroxymethyl)-3,3'-oxydipropan-1-ol

EC Number:

500-276-7

EC Name:

ε-Caprolactone, oligomers, esters with acrylic acid and 2,2,2',2'-tetrakis (hydroxymethyl)-3,3'-oxydipropan-1-ol

Cas Number:

89800-10-2

Molecular formula:

{(C10H16O7).(C3H3O)b.[(C6H10O2)m.(C3H3O)a]} (i.e., UVCB substance)

IUPAC Name:

ε-Caprolactone, oligomers, esters with acrylic acid and 2,2,2',2'-tetrakis (hydroxymethyl)-3,3'-oxydipropan-1-ol

Test material form:

liquid

Details on test material:

Colorless to light yellow

Results and discussion

Boiling point

Key result

Atm. press.:

101.3 kPa

Remarks on result:

not determinable because of methodological limitations

Any other information on results incl. tables

The thermographic data for Determinations 1 and 2 are shown in the following table:

Thermal Event	Interpretation	Temperature (°C)
		Determination 1	Determination 2
Exotherm	Test item underwent a reaction – possible polymerization	~ 178	~ 192

Atmospheric pressure: 101.3 kPa

Overall result: Reaction (possible polymerization) from approximately 178 °C (451 K)

Discussion

In order to aid in the interpretation of the DSC thermograms, an aliquot of test item was placed into a small boiling tube, which was attached adjacent to the bulb of the mercury in glass thermometer, and then placed into the heating bath. During heating, visual observations were recorded periodically, or when a significant change in appearance / physical state was observed.

Significant sample observations and temperatures are summarized in the following table (Visual Evaluation on Heating):

Temperature (°C)	Observation
23	The test item was a clear, colorless liquid.
194	The test item appeared cloudy, and then suddenly solidified and cracked.
240	More fractures have appeared.
255	The test item is becoming pale yellow in color.
270	The test item is darkening, slightly less pale yellow in color.
285	The test item has changed to an amber color.
305	No change. Testing halted.

Assignment of the differential scanning calorimetry thermograms generated during thermal analysis was performed with the aid of observations recorded during the modified liquid bath method visual evaluation.

Conclusion

The test item underwent reaction (possibly polymerization) from approximately 178 °C (451 K) at 101.3 kPa.