Essential oil obtained from the leaves of Cymbopogon flexuosus, gramineae by distillation

Auto flammability

Administrative data

Endpoint:

auto-flammability

Type of information:

experimental study

Adequacy of study:

key study

Study period:

09/10/2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Study according to international guideline (EU Method A.15) under GLP. No deviations from guideline reported.

Cross-reference

Cross-reference 1

Reason / purpose for cross-reference:

reference to same study

Cross-reference 2

Reason / purpose for cross-reference:

reference to other study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2014

Report date:

2014

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:

other: DIN 51794 (2003): Determination of Ignition Temperature

Deviations:

no

Principles of method if other than guideline:

Not relevant

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

91844-92-7

Cas Number:

91844-92-7

IUPAC Name:

91844-92-7

Constituent 2

Reference substance name:

Cymbopogon flexuosus, ext.

EC Number:

295-161-9

EC Name:

Cymbopogon flexuosus, ext.

IUPAC Name:

295-161-9

Constituent 3

Reference substance name:

Lemongrass oil

IUPAC Name:

Lemongrass oil

Test material form:

other: liquid

Details on test material:

Appearance: Yellow liquid
Storage conditions: Ambient temperature, keep container tightly closed

Results and discussion

Auto-ignition temperature (liquids / gases)

Auto-ignition temperature:

240 °C

Atm. press.:

>= 995.6 - <= 996.1 hPa

Remarks on result:

other:

Any other information on results incl. tables

Preliminary test

An approximate value of the ignition temperature of the test item was firstly determined by the preliminary test. Table 1 gives the result of the preliminary test. An ignition is denoted as “+” and no ignition is denoted as “-“. 5 drops were put into the Erlenmeyer flask at each temperature.

Table 1: Results of the preliminary test

	Preliminary test
Temperature / °C	302	285	256	262
Ignition / +/-	+	+	-	+
	Atmospheric pressure: 995.3 hPa

In the preliminary test, the lowest temperature at which an ignition occurred was 262 °C.

Main Test

The results of the main test are given in the following Tables 2 and 3. An ignition is denoted as “+” and no ignition is denoted as “-“.

Table 2:    Determination of the first main test series

1^stMain test series
Temperature / °C	Droplets	Ignition
263	10	+
258	10	+
252	10	+
248	10	+
244	10	+
237	10	-
236	9	-
236	8	-
237	7	-
237	6	-
237	5	-
237	4	-
236	3	-
237	2	-
237	1	-
Atmospheric pressure: 995.7 - 996.1 hPa

Table 3:    Determination of second and third main test series

2^ndMain test series			3^rdMain test series
Temperature / °C	Droplets	Ignition	Temperature / °C	Droplets	Ignition
245	10	+	244	10	+
237	10	-	235	10	-
237	9	-	236	9	-
237	8	-	235	8	-
237	7	-	236	7	-
236	6	-	236	6	-
237	5	-	235	5	-
237	4	-	236	4	-
236	3	-	235	3	-
237	2	-	236	2	-
237	1	-	236	1	-
Atmospheric pressure: 995.6 hPa			Atmospheric pressure: 995.9 hPa

The lowest temperatures at which an ignition occurred in the main test are given in Table 4.

Table 4:         Lowest temperatures at which an ignition occurred

Main test series	Lowest temperatures of an ignition	Highest temperatures without an ignition	Atmospheric Pressure
1	244 °C	237 °C	995.7 - 996.1 hPa
2	245 °C	237 °C	995.6 hPa
3	244 °C	236 °C	995.9 hPa

Applicant's summary and conclusion

Conclusions:

The auto-ignition temperature of Lemongrass Oil is 240 °C measured at an atmospheric pressure from 995.6 to 996.1 hPa.

Executive summary:

The auto-ignition temperature of Lemongrass oil was determined according to EU Method A15 under GLP using a Cylindrical resistance furnace. The auto-ignition temperature was found to be 240 °C at an atmospheric pressure from 995.6 to 996.1 hPa.