Reaction mass of 1-methyl-4-(1-methylethyl)-7-oxabicyclo[2.2.1]heptane and cineole

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

auto-ignition temperature (liquids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

17 November 2016 - 21 November 2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Well documented study performed according to EU A.15 guideline, under GLP and without deviation

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to other study

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

2015-03-05

Auto-ignition temperature:

ca. 288 °C

Atm. press.:

ca. 978 hPa

Remarks on result:

other: First determination

Auto-ignition temperature:

ca. 292 °C

Remarks on result:

other: Second determination

Auto-ignition temperature:

ca. 290 °C

Atm. press.:

ca. 967 hPa

Remarks on result:

other: Third determination

Auto-ignition temperature:

ca. 284 °C

Remarks on result:

other: Final value

Results (see table):

First trial: The preselected auto-ignition temperature was set to 150 °C but no ignition occured during this trial.

Second trial: The preselected auto-ignition temperature was set to 350 °C.

Firstly, VORB program was used with an amount of 5 droplets for each test. Ignition occurred for a sample temperature of 311.8 °C.

Then H-A1 program and H-A2 program were conducted.

For the first determination, H-A1 program was performed from 307 °C using 5 droplets by decreasing temperature in 5 °C steps as ignition occurred.

At 292 °C, ignition did not occur so the amount of test item that is injected was modified. Tests were performed with 2 and 8 droplets.

Ignition occurred using 8 droplets and so the temperature was decreased again by 5 °C till 287 °C. Tests were performed varying the amount of droplets but no ignition occurs whatever the amount of droplets. The last ignition occurred at 292 °C using 8 droplets.

H-A2 program was then used from 290 °C using 8 droplets and the test were continued, in varying the amount of droplets and decreasing the temperature in 2 °C steps.

The last ignition occurred at 288 °C using 5 droplets and correspond to the first auto-ignition temperature (LASTIP on raw data).

For the second determination, temperature was then increased to the value obtained with VORB program (312 °C) and H-A1 program was performed using 5 droplets. The same operatory mode as for the first determination was performed and the lowest auto-ignition was found at 292 °C using 5 droplets.

A third determination was performed as for the second one and a lowest auto-ignition temperature of 290 °C with 8 droplets was found.

The lowest value (288 °C) was reduced by the absolute deviation calculated using the reproducibility value (1.5 % relative) and rounded up to the next 1 °C.

A final auto-ignition temperature (END IP VALUE in raw data) of 284 °C was obtained.

The atmospheric pressure was 978.0 hPa at the beginning of the test and 967.0 hPa at the end of the test.      

Conclusions:

According to EU method A.15, auto-ignition temperature of 284°C was estimated for the test item.

Executive summary:

Auto-ignition temperature of REACTION MASS OF 1,4-CINEOLE AND 1,8-CINEOLE was determined according to EU method A.15.

Two trials were conducted. In the first one, the preselected auto-ignition temperature was set to 150 °C but no ignition occurred and the test stopped automatically. In the second one, the preselected auto-ignition temperature was set to 350 °C and three auto-ignition temperature were recorded (recorded as LASTIP on raw data): 288 °C, 292 °C and 290 °C.

As these three auto-ignition temperature obtained with the determination program did not differ by more than 2%, the results were validated and the lowest value (288 °C) was reduced by the absolute deviation calculated using the reproducibility value (1.5 % relative) as described in DIN EN 14522:2005.

This value was rounded up to the next 1 °C and a final auto-ignition temperature (END IP VALUE in raw data) of 284 °C was obtained.

The atmospheric pressure was 978.0 hPa at the beginning of the test and 967.0 hPa at the end of the test.

Description of key information

Auto-ignition temperature of REACTION MASS OF 1,4-CINEOLE AND 1,8-CINEOLE at atmospheric pressure is 284 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

284 °C

Additional information

A well performed study was conducted according to Guideline EU A.15 and under GLP to determine the self-ignition temperature of REACTION MASS OF 1,4-CINEOLE AND 1,8-CINEOLE. The result was considered as reliable without restriction.