[No public or meaningful name is available]

Auto flammability

Administrative data

Endpoint:

auto-ignition temperature (liquids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

03/AUG/04 - 15/OCT/04

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2004

Report date:

2004

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

IEC 60079-4 (Electrical apparatus for explosive gas atmospheres. Part 4: Method of test for ignition temperature)

Deviations:

no

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether

EC Number:

609-858-6

Cas Number:

406-78-0

Molecular formula:

C4H3F7O

IUPAC Name:

1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether

Test material form:

liquid

Specific details on test material used for the study:

Asahiklin AE-3000, molecular weight 200.07
CAS 406-78-0
Clear colourless liquid
Batch 50407070
Purity: 99.985%
The test substance was stored in a refrigerator in the dark under stable conditions
The test substance expiry date was the 07 July 2005

Results and discussion

Auto-ignition temperature (liquids / gases)

Key result

Auto-ignition temperature:

590 °C

Atm. press.:

1 017.5 hPa

Any other information on results incl. tables

The auto-ignition temperature can be defined as the lowest temperature at which the test substance ignites when mixed with air under the conditions defined in the test method.

In the preliminary test, the auto-ignition temperature of 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether was estimated to be 570°C. Ignition of the test substance resulted in a blue shine with a small orange flame.

The table below summarises the results obtained for the main study. Again, ignition of the test substance resulted in a blue shine with a small orange flame.

Test	Injected test substance volume (µL)	Auto-ignition temperature (°C)	Time lag (s)
Test 1	50	600	1
	70	592	1
	100	597	1
Test 2	50	598	1
	80	597	1
	110	605	1
Test 3	50	603	1
	75	590	1
	100	607	1

The auto-ignition temperature for 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether is the lowest auto-ignition temperature measured during the main study. From the table above, the lowest measured auto-ignition temperature is reported as 590°C.

Applicant's summary and conclusion

Conclusions:

1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether is auto-ignitable with an auto-ignition temperature of 590°C.

Executive summary:

An experiment was carried out to determine the auto-ignition temperature of 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether. Three tests were performed. In each test, different volumes of the test substance were injected successive times into a test vessel. The temperature in the test vessel was lowered gradually from a sufficient high temperature to which a temperature at which it was evident that no more ignition would occur. Ignition of the test substance resulting in a blue shine with a small orange flame. The lowest measured auto-ignition temperature for 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether was recorded as 590°C at an injection volume of 75uL. Therefore, 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether is auto-ignitable with an auto-ignition temperature of 590°C.