Decanoic acid, mixed esters with heptanoic acid, isovaleric acid, octanoic acid and pentaerythritol

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

05. Feb. 2018 to 08. Feb. 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

OECD Guideline No. 103 “Boiling Point“, dated 27. Jul. 1995

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Version / remarks:

EU-Method A.2 dated 31. May 2008, “Boiling Temperature“

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Specific details on test material used for the study:

No further details specified in the study report.

Key result

Boiling pt.:

400.6 °C

Decomposition:

no

Remarks on result:

other: Atm. pressure not specified in the study report.

Pre-test following Siwoloboff

The following observations were noted:

Observations Pre-test

Observations	Temperatures
Smears visible	270 °C
Lots of individual small bubbles at the half top part of the liquid and big individual bubbles	373 °C
Gas burner switched off	405.2 °C
Bo bubbles visible anymore	350 °C

 

After cooling down visible unchanged.

 

Security Pre-test for the DSC instrument

The crucible was found visually unchanged after reaching a temperature of 450 °C. The weight was recorded with 45.77 mg.

 

Calibration

After calibration with indium and zinc the measurement of indium yielded the following values:

Values DSC Indium

Expected Melting point	Measured melting point	Expected Energy	Measured Energy	Assessment
156.6 ± 1.0 °C	156.54 °C (onset)	28.45 ± 1.0 J/g	28.23 J/g	OK

 

The measurement of indium after calibration met the validity criteria.

 

DSC Measurement of the Test Item

The maximum of the peak could not be reached therefore the temperature range was adapted to 445 °C.

The maximum of the peak was reached and the boiling point could be evaluated with the manual Onset function of the software.

Values DSC Test Item second determination

	Temperature [°C]	Heatflow
Boiling Point [°C]	400.51 (manual Onset)	18.91 [mW]

 

Values DSC Test Item third determination

	Temperature [°C]	Heatflow
Boiling Point [°C]	400.68 (manual Onset)	19.95 [mW]

 

Observations

Values observations

	Mass test item	Mass crucible (before measurement):	Mass crucible (after measurement):	Observations
First Measurement	8.66 mg	54.39 mg	51.56 mg	Over the perforation of the crucible a stripe like shadow was visible.
Second Measurement	9.04 mg	54.52 mg	47.36 mg
Third Measurement	10.01 mg	55.57 mg	47.88 mg

 

The first crucible was opened a yellowish residue was visible.

 

Interpretation of the measurements

In all runs an endothermic behaviour was detected. In the second and third determination it was clear visible that the event can be identified as a boiling peak. Due to the detection limit of the DSC 4000 at 445 °C the whole event could not be measured.

For the evaluation with the manual Onset function only the first tangent is necessary. Therefore the boiling point can be evaluated.

 

Presentation of results

For the calculation of the values of the mean and the standard deviation, only the second and third determination was taken into account.

Values results

Boiling Point	In °C	In K
First determination	Not used	Not used
Second determination	400.51	673.66
Third determination	400.68	673.83
Mean	400.60	673.75
Standard deviation	0.12	0.12

 

Validity

As the difference between the two evaluated determinations was below 0.5 K the result can be considered valid.

Conclusions:

The determination of the boiling point Hatcol 1570 was performed via DSC (differential scanning calorimetry). In all runs one endothermic behaviour was detected, which can be identified as the boiling point according to the second and third determination.
Therefore the boiling point under these circumstances can be stated as followed:

400.60 ± 0.12 °C (673.75 ± 0.12 K)

No observations were made which might cause doubts on the validity of the study out-come. Therefore, the result of the study is considered valid.

Executive summary:

Title of Study: Determination of the boiling point of Hatcol 1570 according to OECD 103 resp. EU A.2

 

Findings and Results:

The determination of the boiling point Hatcol 1570 was performed via DSC (differential scanning calorimetry). In all runs one endothermic behaviour was detected, which can be identified as the boiling point according to the second and third determination.

 

Therefore the boiling point under these circumstances can be stated as followed:

 

400.60 ± 0.12 °C (673.75 ± 0.12 K)

These values are the means of two independent determinations.

Description of key information

boiling point determined by DSC: 400.60 ± 0.12 °C (673.75 ± 0.12 K)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

400.6 °C

Additional information

The determination of the boiling point Hatcol 1570 was performed via DSC (differential scanning calorimetry). In all runs one endothermic behaviour was detected, which can be identified as the boiling point according to the second and third determination.

 

Therefore the boiling point under these circumstances can be stated as followed:

 

400.60 ± 0.12 °C (673.75 ± 0.12 K)

These values are the means of two independent determinations.