Ethanaminium, 2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethyl-, esters with C16-18 and C18-unsatd. fatty acids, chlorides

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

25.09.2008 to 09.03.2009

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Version / remarks:

(1995)

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Boiling pt.:

> 250 °C

Atm. press.:

1 013 hPa

The boiling point of MDEA-Esterquat (Rewoquat V 10057) was investigated in a study conducted according to OECD Guideline 103 (Boiling point/boiling range; 1995) and EU Method A.2 (Boiling Temperature; 2008).

In a preliminary test using a thermogravimetric analyzer, 2.54 mg test substance were heated from 25°C to 419°C with a rate of 20°C/min. from approximately 300°C upwards the weight of the sample decreased significantly (at 386°C ca. 25%). After the experiment, the sample was cooled to 50°C. A yellow/brown coloured molten deposit remained in the sample container; this indicates that a reaction and/or decomposition had occurred.

The main study consisted of three individual experiments (all experiments were conducted at atmospheric pressure under a flow of nitrogen)

-in the first experiment 4.84 mg test substance were heated from 25°C to 385°C: endothermic peaks in the range 25°C and 100°C and in the range 150°C and 250°C were observed. After the experiment, a yellow molten residue remained in the sample container.

-in the second experiment, 1.86 mg test substance were heated from -25°C to 200°C. During the initial cooling period (25 to -25°C) no effects were observed. After heating to 100°C, an endothermic peak was observed between 25°C and 100°C. The extrapolated onset temperature of this peak was 54°C. Between 125°C and 200°C a second endothermic effect was observed. After the experiment a white molten residue remained in the sample container.

-in the third experiment, 3.67 mg test substance were cooled from 25°C to -25°C and then heated to 100°C and subsequently to 250°C. During the cooling period no effects were observed. After heating, two endothermic peaks were observed (ranges: 25°C-100°C and 150°C -200°C).

The first peak was attributed to the melting point (extrapolated onset temperature: 54°C).

In this third experiment, compared to the first and second experiment, the peak apex had shifted to lower temperature which confirms that the observed effect was due to reaction and/or decomposition of the test substance and not due to boiling. In conclusion a boiling could not be determined up to a temperature of 250°C.

Conclusions:

The boiling point of MDEA-Esterquat C16-18 and C18 unsatd. was investigated in a study conducted according to OECD Guideline 103 (Boiling point/boiling range; 1995) and EU Method A.2 (Boiling Temperature; 2008). Based on the results of the differential scanning calorimetry a boiling point could not be determined up to a temperature of 250°C at 1013 hPa.

Executive summary:

The boiling point of MDEA-Esterquat C16-18 and C18 unsatd. was investigated in a study conducted according to OECD Guideline 103 (Boiling point/boiling range; 1995) and EU Method A.2 (Boiling Temperature; 2008). Based on the results of the differential scanning calorimetry a boiling point could not be determined up to a temperature of 250°C at 1013 hPa.

Description of key information

>250°C at 1013 hPa

Additional information

The boiling point of MDEA-Esterquat C16-18 and C18 unsatd. could not be determined up to a temperature of 250°C at 1013 hPa in a study conducted according to OECD Guideline 103 (Boiling point/boiling range; 1995) and EU Method A.2 (Boiling Temperature; 2008).