Fatty acids, C8-14 (even numbered) methyl-2-sulfoethyl esters, sodium salts

Boiling point

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Principles of method if other than guideline:

The test is conducted in accordance with the procedure described in EU Regulation (EC) 440/2008, Annex Part A test A.2 and OECD Test Guideline 103.

The test is conducted to determine the temperature or temperature range of the phase transition from a liquid to a vapour. The test also determines if the sample undergoes exothermic decomposition.

The test sample is charged to the test crucible which can be high pressure (sealed) gold construction or can be an open (or pierced lid) aluminium cell. An empty cell, used as a reference pan, is similarly prepared. The sample and reference pans are then placed into a furnace which is heated to 25°C. Once the pans have equilibrated with the furnace, the cells are heated at a constant rate (of up to 20 K.min-1) up to 500°C. Microcomputer data logging is used to monitor the power output of the sample and the temperature in the oven.

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Key result

Boiling pt.:

>= 321.12 - <= 323.04 °C

Atm. press.:

ca. 101 kPa

Decomposition:

yes

Decomp. temp.:

ca. 321.12 °C

Conclusions:

According to the DSC method, the boiling point of SCMI was determined to be within the range 321.12 - 323.04°C (4 runs). Mean average boiling point is 321.9°C.

Executive summary:

An initial test to determine the boiling point of SCMI was conducted using the Siwoloboff method. Howver, no boiling was observed at 250°C, therefore the test was terminated and the test was continued using the differential scanning colorimetry (DSC) method.

According to the DSC method, the boiling point of SCMI was determined to be within the range 321.12 - 323.04°C (4 runs). Mean average boiling point is 321.9°C. However, on completion of testing blackening was observed on the lid of the pan which indicates the sample may have actually decomposed rather than boiled.

Reference 2

Endpoint:

boiling point

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

supporting study

Reliability:

1 (reliable without restriction)

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Type of method:

differential scanning calorimetry

Boiling pt.:

> 310.5 °C

Decomposition:

ambiguous

Remarks on result:

other: A result of 310.5°C was obtained for the onset of the decomposition event

Conclusions:

In a study performed to OECD 103, using DSC to obtain the boiling point of SLMI, it was found that the material undergoes decomposition before boiling. It had a profile consistent with a thermal decomposition event. A result of 310.5°C was obtained for the onset of the decomposition event.

Executive summary:

In a study using DSC to obtain the boiling point of SLMI, it was found that the material undergoes decomposition before boiling. The sample did not exhibit typical boiling point behaviour but had a profile consistent with a thermal decomposition event. A result of 310.5°C was obtained for the onset of the decomposition event.

Reference 3

Endpoint:

boiling point

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Remarks:

Migrated phrase: estimated by calculation

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Principles of method if other than guideline:

EpiSuite calculation

GLP compliance:

no

Type of method:

other: Calculation

Boiling pt.:

630.5 °C

Reference 4

Endpoint:

boiling point

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Episuite calculation

GLP compliance:

no

Type of method:

other: Calculation

Boiling pt.:

625.9 °C

Remarks on result:

other: EPI Suite Estimation

Description of key information

An initial test to determine the boiling point of SCMI was conducted using the Siwoloboff method. Howver, no boiling was observed at 250°C, therefore the test was terminated and the test was continued using the differential scanning colorimetry (DSC) method.

According to the DSC method, the boiling point of SCMI was determined to be within the range 321.12 - 323.04°C (4 runs). Mean average boiling point is 321.9°C. However, on completion of testing blackening was observed on the lid of the pan which indicates the sample may have actually decomposed rather than boiled.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

321.9 °C