Sodium 2-(1-carboxylatoethoxy)-1-methyl-2-oxoethyl laurate

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018-04-18 to 2018-09-18

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point/Boiling Range)

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

GLP compliance:

no

Type of method:

differential scanning calorimetry

Remarks:

Boiling point was investigated by DSC measurement and confirmed by capillary method

Specific details on test material used for the study:

- Test item: Esterlac SLL
- CAS No.: 13557-75-0
- Molecular weight: 294.37 g/mol
- Sum formula: C18H31NaO6
- Identity: 64.2% aicd value, 194 saponification number
- Physical state: Light yellow paste
- Storage: 10 °C - 30 °C

Key result

Boiling pt.:

ca. 240 °C

Atm. press.:

1 013.3 hPa

Decomposition:

yes

Decomp. temp.:

ca. 240 °C

Two DSC measurements in aluminium crucibles with a hole showed an endothermal effect after the melting in the temperature range of 240 - 340 °C. The onset was ambiguous due to the atypical course of the measurement for a boiling. Directly afterwards and exothermal effect was observed.

The results of the DSC measurements are summarised in Table 1.

Table 1: Boiling point (DSC measurement)

DSC run	Weight in / mg	Starting temperature / °C	Final test temperature / °C	Temperature range (endothermal) / °C	Onset (boiling) / °C	Crucible	Observations after the measurement
1	13.11	25	500	240 - 340	ambiguous	Aluminium with hole	Black residues, mass loss 72%
2	7.11	0	340	270 - 340	ambiguous	Aluminium with hole	Dark brown residues, mass loss 37%

An additional measurement with the capillary method was performed in order to clarify the boiling range. Since this measurement was performed only as a verifying screening a high heating rate of 10 K/min was chosen and therefore the absolute temperature values derived with the capillary method are not as accurate as the DSC results. The filling height of the test item was approx. 5 mm. The results are summarised in Table 2.

Table 2: Results of capillary method

No	Set point / °C	Heating rate / K/min	End point / °C	Remarks
1	200	10	400	Approx. 200 °C: test item was a clear melt Approx. 240 °C: starting formation of bubbles Approx. 270 °C: increasing formation of bubbles and discolouration to light orange Approx. 290 °C: further discolouration Approx. 310 °C: increasing formation of bubbles and discolouration to brown Approx. 330 °C: test item discoloured to dark brown, highly viscous, increasing formation of bubbles Approx. 400 °C: no further changes

The DSC measurement and the capillary method measurement showed that the test item started to boil under decomposition at approximately 240 °C.

Conclusions:

The test item started to boil under decomposition at approx. 240 °C under atmospheric pressure (1013.3 hPa).

Executive summary:

The boiling point of the test item was investigated by DSC measurement according to OECD 103 and confirmed by capillary method. The test item started to boil under decomposition at approx. 240 °C under atmospheric pressure (1013.3 hPa).

Description of key information

The boiling point of the test item was investigated by DSC measurement according to OECD 103 and confirmed by capillary method. The test item started to boil under decomposition at approx. 240 °C under atmospheric pressure (1013.3 hPa).

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

240 °C