1,2-Ethandiylbis(oxy-2,1-ethandiyl)-dimethansulfonat

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

04 March - 01 April 2022

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2022

Report date:

2022

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

1995

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Version / remarks:

EC No 440/2008

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7220 (Boiling Point / Boiling Range)

Version / remarks:

1996

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

2-[2-(2-hydroxyethoxy)ethoxy]ethanol,methanesulfonic acid

Cas Number:

80322-82-3

Molecular formula:

C8H18O8S2

IUPAC Name:

2-[2-(2-hydroxyethoxy)ethoxy]ethanol,methanesulfonic acid

impurity 1

Reference substance name:

Water

EC Number:

231-791-2

EC Name:

Water

Cas Number:

7732-18-5

Molecular formula:

H2O

IUPAC Name:

Oxidane

impurity 2

Reference substance name:

1,2-Ethandiylbis(oxy-2,1-ethandiyl)-monomethanesulfonat

IUPAC Name:

1,2-Ethandiylbis(oxy-2,1-ethandiyl)-monomethanesulfonat

Test material form:

liquid

Details on test material:

Appearance: Dark yellow liquid
Batch No.: 01110008
Storage: -5 – 40 °C, container tightly closed, protected from light

Specific details on test material used for the study:

Batch N0. 01110008
Storage: Refrigerator (2 – 8 °C; max. 40 °C), container tightly closed

Results and discussion

Boiling point

Key result

Atm. press.:

ca. 1 011 hPa

Decomposition:

yes

Decomp. temp.:

ca. 100 °C

Remarks on result:

other: No boiling point up to its decomposition starting at approx. 100 °C at atmospheric pressure (1011 hPa).

Any other information on results incl. tables

During the cooling phase the test item showed no thermal effects down to a temperature of -90 °C.
During the heating phase a distinct endothermic effect was observed in the temperature range of -55 °C to -45 °C, which can be assigned to the melting of the test item. As the onset temperatures in both tests deviate by more than 0.5 K from their mean value of -52.82 °C, the test item has a melting range of -54 °C to -52 °C.

An exothermic effect was observed starting at a temperature of approx. 190 °C with an average energy release of -170 J/g. The exothermic effect is interrupted by an endothermic effect in the temperature range of 230 – 250 °C, which could be caused by an evaporation of gaseous decomposition products. The endothermic effect is directly followed by an exothermic effect with an average energy release of -180 J/g. A further endothermic effect was observed in the temperature range of 440 – 490 °C.

Measurement No.	Sample weight / mg	Onset of Effect / °C	Range of effect / °C	Weight loss / mg	Atmospheric pressure / hPa
PN23095	9.66	---	---
		-51.93	-55 to -45 (endo)	8.99	1010.5
		---	190 to 230 (exo)
		---	230 to 250 (endo)
		---	250 to 300 (exo)
		---	440 to 490 (endo)
PN23096	9.01	--	---	8.39	1010.5
		-53.71	-55 to -45(endo)
			190 to 230(exo)
			230  to 250 (endo)
			250 to 310 (exo)
			440 to 490 (endo)

Optical verification using the capillary method
Due to the fact that no second endothermic effect was observed from room temperature up to the decomposition of the test item starting at a temperature of approx. 190 °C in the DSC measurements using open aluminium crucibles, an additional measurement in a boiling capillary was performed in the temperature range of 25 °C to 220 °C at a heating rate of 10 K/min. The test item showed a first formation of bubbles starting at a temperature of approx. 130 °C. At a temperature of approx. 150 °C the bubble rise criteria of 0.6 Hz was reached, which cannot be evaluated as a boiling of the test item (see endpoint study record for thermal stability). Starting at a temperature of 180 °C the colour of the test item started to get darker. At a temperature of 200 °C the test item is dark brown to black and the test was terminated at 220 °C.
Due to this result, the test item has no boiling point up to its decomposition starting at a temperature of approx. 100 °C (see DSC measurements in closed crucibles for the determination of the thermal stability).

 

Applicant's summary and conclusion

Conclusions:

The test item Triethylene glycol dimethanesulfonate (CAS no. 80322-82-3) has no boiling point
up to its decomposition starting at approx. 100 °C at atmospheric pressure (1011 hPa) as
determined by Differential Scanning Calorimetry and capillary method according to Regulation
(EC) No 440/2008 Method A.2. and OECD Test Guideline 103 (1995).

Executive summary:

The test item Triethylene glycol dimethanesulfonate (CAS no. 80322-82-3) has no boiling point
up to its decomposition starting at approx. 100 °C at atmospheric pressure (1011 hPa) as
determined by Differential Scanning Calorimetry and capillary method according to Regulation
(EC) No 440/2008 Method A.2. and OECD Test Guideline 103 (1995).