Decanoic acid, monoester with glycerol

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

26 Jun - 24 Jul 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Cross-reference

Reason / purpose for cross-reference:

reference to same study

Reference

Endpoint:

appearance / physical state / colour

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: see "Remarks"

Remarks:

The appearance of the test item is described in a reliable study report on the physical-chemical properties of the substance. Since no guideline was followed and no details on the methods are given, the description is considered as reliable with restrictions.

Reason / purpose for cross-reference:

reference to same study

Qualifier:

no guideline followed

Principles of method if other than guideline:

The description of the physical state of the substance was based on a visual inspection of the substance at room temperature and normal pressure.

GLP compliance:

no

Physical state at 20°C and 1013 hPa:

solid

Key result

Form:

solid

Colour:

White

Substance type:

organic

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

27 July 1995

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Version / remarks:

31 May 2008

GLP compliance:

yes (incl. QA statement)

Remarks:

Landesamt für Umwelt, Wasserwirtschaft und Gewerbeaufsicht, Mainz, Germany

Type of method:

method according to Siwoloboff

Test material

Test material information

Constituent 1

Reference substance name:

Esterification product of glycerol and C8-C12 (even numbered) fatty acids

Molecular formula:

not applicable, substance is UVCB

IUPAC Name:

Esterification product of glycerol and C8-C12 (even numbered) fatty acids

Results and discussion

Boiling point

Key result

Boiling pt.:

268.6 °C

Atm. press.:

101.325 kPa

Decomposition:

yes

Any other information on results incl. tables

Pre-Test results

Observations	Temperatures
The test item drew together	47.8 °C
The test item melted to a clear slightly yellowish liquid	59.8 °C
Formation of bubble	237 °C
Bubble chain, turned off heating plate	313 °C
No bubbles were visible	285 °C
Rose back in the capillary	269.1 °C
After cooling down	The test item stayed yellowish liquid and it was still liquid on the next day.

 

 

Main test results

Determination	Boiling Point	Atmospheric Pressure
First determination	268.0 °C (541.2 K)	99158 Pa
Second determination	267.2 °C (540.4 K)	99158 Pa

 

Main test observations

Observations	First determination	Second determination
When the sample tube was set into the aluminium block, the test item melted instantly to slightly yellowish liquid with bubbles and formation of vapour over the liquid.	260.0 °C	260.0 °C
Colourless condensate was visible; the colour was darker (more yellowish) and got darker from time to time.	270 °C	270 °C
Bubble chain, turned off gas burner	312 °C	312 °C
After cooling down	The test item stayed as a viscous yellow-brown liquid.	The test item stayed as a viscous yellow-brown liquid.

 

 

Calculation of Boiling point

	Boiling point	Pressure in Pa	Corrected Boling point (according to Sidney-Young)
First determination	268.0 °C (541.2 K)	99158 Pa	268.97 °C (542.12 K)
Second determination	267.2 °C (540.4 K)	99158 Pa	268.17 °C (541.32 K)
Mean			268.6 °C (541.7 K)

 

Mean ± standard deviation (after correction following Sydney Young) = 268.6 ± 0.6 °C (541.7 ± 0.6 K) at standard pressure (101.325 kPa).

 

Conclusion

The test item had changed its colour and physical state to a viscous yellow-brown liquid during the tests. Therefore, the boiling point should be stated as 268.6 ± 0.6 (corresponding to 541.7 ± 0.6 K) under decomposition. This value is the mean of two independent determinations.