[No public or meaningful name is available]

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experiment start date - 22 March 2010; Experiment completion date - 23 March 2010; Study completion date - 31 May 2010.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Specific details on test material used for the study:

Identification: FAT 40851/A TE
Batch Number: TZ 5891 / BOP 02-09
Purity: 69.9% all coloured components
Appearance: Orange powder
Expiry Date: July 31, 2014
Storage Conditions: At room temperature at about 20 °C

Boiling pt.:

> 302 °C

Atm. press.:

98.4 kPa

Decomposition:

yes

Decomp. temp.:

302 °C

Preliminary Test

The DSC-curve of the preliminary test (heating rate of 20 °C/min from 25 °C to 400 °C). An endothermic heat effect was observed at about 106 °C and an exothermic heat effect was detected at about 313 °C. After the experiment, the sample had lost about 20% of its mass and the colour of the sample was black and powdery.

Main Test

A DSC main test run was recorded in the temperature range from 25 °C and 400 °C (heating rate 10 °C/min) which confirmed the results obtained during the preliminary test. The exothermic reaction starting at about 302 °C showed that test substance decomposed before boiling occurred. After the experiment, a black powder remained and the sample lost about 23% of its mass.

The atmospheric pressure during the measurements was 98.4 kPa.

Conclusions:

Decomposition of test substance started at about 302 °C before boiling occurred.

Executive summary:

The determination of the boiling point / boiling range of the test item was performed under GLP according to the EEC Directive 92/69 and Council Regulation (EC) No. 440/2008, A.2 “Boiling temperature" and to the OECD Guideline No. 103: "Boiling point", adopted July 27, 1995.

In the preliminary test a test item amount of 4.28 mg was heated up from 25 °C to 400 °C at a rate of 20 °C/min. The quantities of heat absorbed or released were measured and recorded. Before and after the test, the weight and the appearance of the sample were determined.

The Differential Scanning Calorimeter(DSC) - curve of the preliminary test (heating rate of 20 °C/min from 25 °C to 400 °C). An endothermic heat effect was observed at about 106 °C and an exothermic heat effect was detected at about 313 °C. After the experiment, the sample had lost about 20% of its mass and the colour of the sample was black and powdery.

As in the preliminary test temperature range investigated, one endothermic and one exothermic peak was observed, the thermal analysis was repeated with 4.14 mg of the test item within the same temperature range (25 °C to 400 °C). The temperature rise was adjusted to 10 °C/min. Before and after the test, the weight and the appearance of the sample were determined.

A DSC main test run was recorded in the temperature range from 25 °C and 400 °C (heating rate 10 °C/min) which confirmed the results obtained during the preliminary test. The exothermic reaction starting at about 302 °C showed that test substance decomposed before boiling occurred. After the experiment, a black powder remained and the sample lost about 23% of its mass. The atmospheric pressure during the measurements was 98.4 kPa.

Based on the findings of the study, it can be concluded that the test substance does not boil under normal conditions and decomposition starts at 302 °C.

Description of key information

The substance starts to decompose prior to boiling and decomposition starts at about 302 °C.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

400 °C

Temperature of decomposition (state purity):

302 °C

Additional information

The determination of the boiling point / boiling range of the test item was performed under GLP according to the EEC Directive 92/69 and Council Regulation (EC) No. 440/2008, A.2 “Boiling temperature" and to the OECD Guideline No. 103: "Boiling point", adopted July 27, 1995. In the preliminary test a test item amount of 4.28 mg was heated up from 25 °C to 400 °C at a rate of 20 °C/min. The quantities of heat absorbed or released were measured and recorded. Before and after the test, the weight and the appearance of the sample were determined.

The Differential Scanning Calorimeter (DSC) - curve of the preliminary test (heating rate of 20 °C/min from 25 °C to 400 °C). An endothermic heat effect was observed at about 106 °C and an exothermic heat effect was detected at about 313 °C. After the experiment, the sample had lost about 20 % of its mass and the colour of the sample was black and powdery. As in the preliminary test temperature range investigated, one endothermic and one exothermic peak was observed, the thermal analysis was repeated with 4.14 mg of the test item within the same temperature range (25 °C to 400 °C). The temperature rise was adjusted to 10 °C/min. Before and after the test, the weight and the appearance of the sample were determined. A DSC main test run was recorded in the temperature range from 25 °C and 400 °C (heating rate 10 °C/min) which confirmed the results obtained during the preliminary test. The exothermic reaction starting at about 302 °C showed that test substance decomposed before boiling occurred. After the experiment, a black powder remained and the sample lost about 23 % of its mass. The atmospheric pressure during the measurements was 98.4 kPa. Based on the findings of the study, it can be concluded that the test substance does not boil under normal conditions and decomposition starts at 302 °C.