Reaction mass of 7,7-dimethyl-2-methylidenebicyclo[2.2.1]heptane and (1R)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane and (1S)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane and (1S)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene

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 January 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Test method according to EEC method A.15. GLP study.

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Auto-ignition temperature:

220 °C

Atm. press.:

760 mm Hg

Table 1: Observations of Auto-flammability

Temperature (°C)	Atmospheric Pressure (mm Hg)	Quantity (µL) of Test Item Introduced in the Flask	Time-lag*	Remarks
30	760	100	10 minutes	No flame observed
60		100	10 minutes	No flame observed
90		100	10 minutes	No flame observed
120		100	10 minutes	No flame observed
150		100	10 minutes	No flame observed
180		100	10 minutes	No flame observed
210		100	10 minutes	No flame observed
240		100	22 seconds	Yellow flame observed
210		100	10 minutes	No flame observed
210		200	10 minutes	No flame observed
220		100	10 minutes	No flame observed
220		200	24 seconds	Yellow flame observed
220		200	24 seconds	Yellow flame observed
220		200	23 seconds	Yellow flame observed

Atmospheric Pressure: 760 mm Hg

*Time-lag is the period elapsed between the addition of test item and appearance of the flame.

 

                                            23 + 24

Mean Time-lag (second) =----------------- = 24

                                                  2

Conclusions:

The auto flammability of the test item is 220ºC at 760 mm Hg atmospheric pressure according to EU method A.15 criteria.

Executive summary:

The determination of the auto flammability of the test item was performed according to EU Method A.15 (GLP study). The test substance was introduced into a pre-heated flask of 500 mL capacity placed in an electrically heated furnace. The temperature, measured by a calibrated thermocouple, was raised from 30ºC with an interval of 30 °C. At each interval, sample flask was observed for flame up to a maximum time-lag of 10 minutes. The auto flammability of reaction mass (fenchene, laevo alpha pinene, laevo camphene, dextro camphene) was observed at 220 °C with a yellow flame after a mean time-lag of 24 seconds at 760 mm Hg atmospheric pressure with introduction of 200 µL volume of test item.

Description of key information

Key study. Test method according to EU Method A.15, GLP study. The auto flammability of the test item is 220ºC at 760 mm Hg.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

220 °C

Additional information

Key study: The determination of the auto flammability of the test item was performed according to EU Method A.15 (GLP study). The test substance was introduced into a pre-heated flask of 500 mL capacity placed in an electrically heated furnace. The temperature, measured by a calibrated thermocouple, was raised from 30ºC with an interval of 30 °C. At each interval, sample flask was observed for flame up to a maximum time-lag of 10 minutes. The auto flammability of reaction mass (fenchene, laevo alpha pinene, laevo camphene, dextro camphene) was observed at 220 °C with a yellow flame after a mean time-lag of 24 seconds at 760 mm Hg atmospheric pressure with introduction of 200 µL volume of test item.