Trifluoromethanesulphonic anhydride

Additional physico-chemical information

Administrative data

Endpoint:

other: exothermic reactions by DSC analysis

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 16 Oct 2015 to 11 Dec 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2015

Report date:

2015

Materials and methods

Test guideline

Qualifier:

no guideline required

Principles of method if other than guideline:

The objective of the test is to determine the behaviour of the test item during a heating procedure under nitrogen and at the atmospheric pressure using the Differential Scanning Calorimetry method (DSC). This thermodynamic information allows determining if the test item gives exothermic reactions upon heating and thus a more complete test on explosive properties is relevant.

GLP compliance:

yes (incl. QA statement)

Remarks:

28/07/2015

Test material

Test material information

Constituent 1

Reference substance name:

Trifluoromethanesulphonic anhydride

EC Number:

206-616-8

EC Name:

Trifluoromethanesulphonic anhydride

Cas Number:

358-23-6

Molecular formula:

C2F6O5S2

IUPAC Name:

trifluoromethanesulfonyl trifluoromethanesulfonate

Test material form:

liquid

Details on test material:

See confidential details

Results and discussion

Results:

One assay with four phases was performed during the test. Only the heating phases are shown below.
One exothermic large peak was observed from about 545°C to 570°C, during the first phase.
The enthalpy difference was 201.4 J/g.
Neither endothermic nor exothermic peak was observed up to 500°C under the experimental conditions used during the third phase.

Any other information on results incl. tables

During the first phase, one exothermic peak was observed from about 545°C to 570°C. The exothermic decomposition energy was less than 500 J/g (201.4 J/g), so the test item shall not be classified as explosive and the test on explosive properties according to EC A14 method or series 1 to 3 from UN Recommendations on the Transport of Dangerous Goods – Model Regulations (UN RTDG Model Regulations) following EC No. 1272/2008 (CLP) should not be performed.

Applicant's summary and conclusion

Conclusions:

During the first phase, one exothermic peak was observed from about 545°C to 570°C. The exothermic decomposition energy was less than 500 J/g (201.4 J/g), so the test item shall not be classified as explosive.

Executive summary:

In a study (2015), the exothermic reactions of trifluoromethanesulphonic anhydride were observed by DSC analysis, under GLP conditions.

An aliquot of test item was placed into a crucible. The lid was fitted and the crucible was placed in the DSC analyser. Two phases of heating were programmed. The heating procedure was performed at 5 °C/min from room temperature to 600°C.

During the first phase, one exothermic peak was observed from about 545°C to 570°C. The exothermic decomposition energy was less than 500 J/g (201.4 J/g), so the test item shall not be classified as explosive and the test on explosive properties according to EC A14 method or series 1 to 3 from UN Recommendations on the Transport of Dangerous Goods – Model Regulations (UN RTDG Model Regulations) following EC No. 1272/2008 (CLP) should not be performed.