Commiphora myrrha, ext.

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:

From 17 June to 11 November 2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

The study was conducted according to an internationally recognized method, and under GLP. No deviation was reported. Test substance is adequately specified. Therefore full validation applies.

Qualifier:

according to guideline

Guideline:

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

Version / remarks:

2008

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: Anon (1987), Electrical Apparatus for Explosive Gas Atmospheres. Part 4: Method of Test for Ignition Temperature. IEC Publications 79-4, P1-19.

Deviations:

no

Principles of method if other than guideline:

Not applicable

GLP compliance:

yes (incl. QA statement)

Remarks:

UK GLP compliance programme (inspected on 05 July 2016 / signed on 28 October 2016)

Key result

Auto-ignition temperature:

282 °C

Atm. press.:

>= 100.9 - <= 101.1 kPa

Results

Results of the auto-ignition temperature determination are shown in the following table:

Table 4.12/1.-Results

Test Temperature (ºC)	Sample Size (g)	Ignition Delay (s)	Observations
200 (clean flask)	0.2	>300	No ignition. Grey fumes were emitted.
250 (clean flask)	0.2	>300	No ignition. Grey fumes were emitted.
300 (clean flask)	0.2	14	An orange flame. Grey fumes were emitted.
290	0.2	23	An orange flame. Grey fumes were emitted.
280	0.2	>300	No ignition. Grey fumes were emitted.
284	0.2	>300	No ignition. Grey fumes were emitted.
286	0.2	>300	No ignition. Grey fumes were emitted.
288	0.2	34	An orange flame. Grey fumes were emitted.

286 (clean flask)	0.2	48	An orange flame. Grey fumes were emitted.
284 (clean flask)	0.2	52	An orange flame. Grey fumes were emitted.
282 (clean flask)	0.2	49	An orange flame. Grey fumes were emitted.
280 (clean flask)	0.2	>300	No ignition. Grey fumes were emitted.
280 (clean flask)	0.4	>300	No ignition. Grey fumes were emitted.
280 (clean flask)	0.6	>300	No ignition. Grey fumes were emitted.
280 (clean flask)	0.8	>300	No ignition. Grey fumes were emitted.
280 (clean flask)	1.0	>300	No ignition. Grey fumes were emitted.

Room temperature: 20 to 21 °C
Atmospheric pressure: 100.9 to 101.1 kPa

Conclusion

The test item has been determined to have an auto-ignition temperature of 282 ± 5 °C.

Conclusions:

This parameter/method is not relevant for classification, however the information is useful regarding potential additional fire hazard. No particular hazard is anticipated in normal conditions of storage.

Executive summary:

The study was conducted under GLP according to procedure and demands of IEC 79 -4 method (listed in EU A.15 guideline).

Under the test conditions, the lowest temperature that will result in the ignition of the test item after being injected into the test flask was determined as 282 °C between 100.9 and 101.1 kPa. This value was determined using 0.2g of test substance. The test substance showed auto ignition after 49 seconds.

Description of key information

The auto-ignition temperature of the test item is stated as 282 °C (100.9 -101.1 kPa).

No particular hazard is anticipated in normal conditions of storage

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

282 °C

Additional information

A GLP fully reliable experimental study, conducted according to a recognized EU/IEC method, is available. Therefore, it is considered as a key study. The result is retained as key data.

This parameter is not relevant for classification, however the information is useful regarding process safety and potential additional fire hazard