Trifluoro(trifluoromethoxy)ethylene

Auto flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

auto-ignition temperature (gases)

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

documentation insufficient for assessment

Qualifier:

no guideline followed

Principles of method if other than guideline:

The methodology was not reported.

GLP compliance:

no

Auto-ignition temperature:

> 180 °C

Remarks on result:

other: The pressure was not reported

Conclusions:

The substance has a self ignition temperature > 180°C

Reference 2

Endpoint:

auto-ignition temperature (gases)

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

documentation insufficient for assessment

Qualifier:

no guideline followed

Principles of method if other than guideline:

The methodology was not reported.

GLP compliance:

no

Auto-ignition temperature:

191 °C

Remarks on result:

other: The pressure was not reported.

Conclusions:

The self ignition temperature of the substance is 191°C.

Reference 3

Endpoint:

auto-ignition temperature (gases)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from 15th july 2004 to 20th July 2004

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

GLP study in compliance with international recognized guidelines

Qualifier:

according to guideline

Guideline:

EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))

Deviations:

no

GLP compliance:

yes

Auto-ignition temperature:

180 °C

Atm. press.:

1 atm

Remarks on result:

other:

Screening test:

In a first screening test the test vessel is heated up with a temperature rate of 5 K ± I K per minute. During the heating up period 50 ml ± 5 ml of the test substance are injected into the test vessel every 20 K till an ignition occurs. Thereby the test vessel has to be flushed completely by compressed air before each injection. The temperature at which an ignition occurs is the initial temperature for the first test series.

First test series:

The test vessel is heated to the ignition temperature found in the screening test. At this temperature 50 ml ± 2 ml are filled into the vessel. If an ignition occurs within 5 minutes, the temperature of the test vessel is lowered in intervals of 5 K ± 1 K till no ignition occurs within 5 minutes after filling the same amount of the test substance. At that temperature where just no ignftion occurs the amount of the test substance is to vary stepwise in increments of 10 ml ± 1 ml till an ignition occurs or till it is ensured that no ignition will occur at this temperature with any amount of substance. Now the lowest temperature found in the previous steps where an ignition occurred is chosen. This temperature of the test vessel is lowered in intervals of 2 K ± 1 K till ignition does not occur within 5 minutes after introducing every time the same amount of substance as found in the previous step (last ignition). At that temperature where ignition did not occur within 5 minutes the amount of the flammable substance is varied in increments of 10 ml ± I ml till an ignition occurs or till it is ensured that no ignition will occur at this temperature with any amount of substance. The lowest temperature at which an ignition occurs with any amount of test substance is the lowest temperature of the first test serie.

Main test series:

The lowest temperature of the first test series may be influenced by any combustion products at the surface of the test vessel. For this reason the test vessel is cleaned for the main test series. The above mentioned procedure is repeated in the temperature region of the lowest temperature of the first test series. The thereby found lowest temperature at which an ignition occurs is the lowest temperature of the main test series.

Repetition series:

In the temperature region of the lowest temperature of the main test series the above mentioned procedure has to be repeated with a clean test vessel. At least three lowest temperatures of the main test serie and the repetition series are needed till the values do not differ more than 10 K from each other for a temperature region lower than 300 °C respectively not more than 20 K for a temperature region greater than 300 °C. If the lowest temperature of the first test series does not differ more than 10 K from the value determined in the main test series for a temperature region lower than 300 °C respectively not more than 20 K for a temperature region greater than 300 °C the lowest temperature of the first test series can be used as lowest temperature of a repetition.

Conclusions:

The substance has a self ignition temperature of 180°C ± 5°C at 1 atm.

Description of key information

Auto flammability ( EU Method A.15): 180°C ± 5°C at 1 atm.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

180 °C

Additional information

The auto flammability of the substance was assessed in accordance with EU Method A.15 and in compliance with GLP. 

Information regarding the auto flammability temperature of perfluoromethyl vinyl ether was also reported from two additional sources (Klimisch-4 reliability). The data both agree that the test substance has an auto flammability temperature ranging from 180°C to 191°C.