Acetic acid, 2,2-difluoro-2-[[2,2,4,5-tetrafluoro-5-(trifluoromethoxy)-1,3-dioxolan-4-yl]oxy]-, ammonium salt (1:1)

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 09 Nov. 2009 to 11 Jan. 2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Guideline-conform study under GLP without deviations.

Qualifier:

according to guideline

Guideline:

EU Method A.16 (Relative Self-Ignition Temperature for Solids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

Identification as reported on study report: cC6O4
Batch Number: 156/17
Purity > 98%
Expiry date: December 31, 2020
Storage conditions: At room temperature at about 20°C

Key result

Remarks on result:

no self-ignition observed up to the melting point

Remarks:

Below the melting point,cC6O4 ammonium salt is not auto-flammable, according to the criteria as described in the guideline.

During this study the self-ignition characteristics were determined. Therefore, the test item was filled into a cube and heated in an oven. The temperatures of the oven and the sample were continuously recorded while the temperature of the oven was increased to approximately 400 °C.

The correlation between the temperature of the oven and the sample temperature of cC6O4 is shown in Figure 1.

Using a linear increase in temperature of about 0.5 °C/min, cC6O4 showed no exothermic reaction. cC6O4 has a melting point of about 65 °C (as determined in Harlan Laboratories study C66277).

As the above-mentioned guideline only applies to solids, the temperature range between 65 °C and 400 °C is not relevant for the present test item. At the end of the measurement of cC6O4 had run out of the sample cube and no residue remained.

Conclusions:

Below the melting point, cC6O4 ammonium salt is not auto-flammable, according to the criteria as described in the guideline.

Executive summary:

The determination of the relative self-ignition temperature of the test item was performed according to the EEC Directive 92/69, EEC Publication No. L383, December 1992 and Council Regulation (EC) No. 440/2008, Part A, Methods for the determination of physico-chemical properties, A.16 “Relative self-ignition temperature for solids”.

During this study the self-ignition characteristics were determined. Therefore, the test item was filled into a cube and heated in an oven. The temperatures of the oven and the sample were continuously recorded while the temperature of the oven was increased to approximately 400 °C.

The correlation between the temperature of the oven and the sample temperature of cC6O4 ammonium salt is shown in Figure 1.

Using a linear increase in temperature of about 0.5 °C/min, cC6O4 ammonium salt showed no exothermic reaction. cC6O4 ammonium salt has a melting point of about 65 °C (as determined in Harlan Laboratories study C66277).

As the above-mentioned guideline only applies to solids, the temperature range between 65 °C and 400 °C is not relevant for the present test item. At the end of the measurement of cC6O4 ammonium salt had run out of the sample cube and no residue remained.

As the substance melted prior to acheiving any self ignition, it is deemed that the substance does not pose hazard for this endpoint.

Description of key information

The determination of the relative self-ignition temperature of the test item was performed according to the EEC Directive 92/69, EEC Publication No. L383, December 1992 and Council Regulation (EC) No. 440/2008, Part A, Methods for the determination of physico-chemical properties, A.16 “Relative self-ignition temperature for solids”.

Additional information

Below the melting point of 65°C, cC6O4 ammonium salt is not auto-flammable (no exothermic reaction observed as a consequence of the increase of temperature).

The temperature range between 65 °C and 400 °C was not investigated as not relevant for the autoflammability of the solid test item.