3-ethoxy-1,1,1,2,3,4,4,5,5,6,6,6-dodecafluoro-2-(trifluoromethyl)-hexane

Flammability

Administrative data

Endpoint:

flammable gases

Type of information:

experimental study

Adequacy of study:

key study

Study period:

02Sep2021

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2021

Report date:

2021

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.11 (Flammability (Gases))

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

-

EC Number:

435-790-1

EC Name:

-

Cas Number:

297730-93-9

Molecular formula:

C9H5F15O

IUPAC Name:

3-ethoxy-1,1,1,2,3,4,4,5,5,6,6,6-dodecafluoro-2-(trifluoromethyl)hexane

Details on test material:

- Name of test material (as cited in study report): HFE 7500
- Substance type: Pure active substance
- Analytical purity: 99.7%
- Stability under test conditions: Stable
- Storage condition of test material: Room temperature

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Name of test material (as cited in study report): HFE 7500
- Lot/batch number of test material: 21429
- Purity: 99.7%
- Expiration date: 30Dec2021

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Room temperature (15-25 °C)

Results and discussion

Flammable gases (Lower and upper explosion limit)

Flammable gases (Lower and upper explosion limit) 1

Key result

Parameter:

lower explosion limit

Value:

ca. 1.8 vol%

Flammable gases (Lower and upper explosion limit) 2

Key result

Parameter:

upper explosion limit

Value:

ca. 15 vol%

Any other information on results incl. tables

The lower expolosion limit (LEL) and upper explosion limit (UEL) was determined at a temperature of 144 °C and an atmospheric pressure of 1006 hPa. The temperature selected was due to observed condensation effects at lower temperatures. The ignition flame near the LEL was characterised as a broad blue flame that filled the whole explosion tube. The ignition flame near the UEL can be characterised as a small yellow/orange to red flame which indicates an almost incomplete burning. Additionally, a significant temperature rise was detected at the upper thermocouple of at least 10 K. At trials with no ignition, no temperature rise was observed. An aureola was observed in no ignition trials but the aureola did not reach the minimum height of 240 mm.

Applicant's summary and conclusion

Interpretation of results:

study cannot be used for classification

Conclusions:

HFE 7500 was determined to have a lower explosion limit (LEL) of 1.8 vol% and an upper explosion limit (UEL) of 15 vol% at a temperature of 144 °C and an atmospheric pressure of 1006 hPa (EU Method A.11).

Executive summary:

The upper and lower explosion limits were determined for HFE 7500 at 144 °C and an atmospheric pressure of 1006 hPa. The temperature selected was due to observed condensation effects at lower temperatures. The test was performed using EU Method A. 11 and was GLP compliant. Therefore, it is considered reliable without restriction.