Cyclohexanecarboxylic acid, 1-(2-ethylbutyl)-

Auto flammability

Administrative data

Endpoint:

auto-flammability

Type of information:

experimental study

Adequacy of study:

key study

Study period:

November 15, 2010 - December 21, 2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: This study has been performed according to EC, DIN and IEC guidelines and according to GLP principles.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2011

Report date:

2011

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: Deutsches Institut für Normung (DIN), DIN Guide 51794: "Determining the Ignition Temperature of Petroleum Products", May 2003

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

other: International Electrotechnical Commission (IEC), IEC standard 79-4: "Electrical Apparatus for Explosive Gas Atmospheres, Part 4, Method of Test for Ignition Temperature", 1975

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

1-(2-ethylbutyl)cyclohexane-1-carboxylic acid

EC Number:

619-508-4

Cas Number:

381209-09-2

Molecular formula:

C13 H24 O2

IUPAC Name:

1-(2-ethylbutyl)cyclohexane-1-carboxylic acid

Details on test material:

- Name of test material (as cited in study report): CAT-Acid
- Stability under test conditions: stable
- Storage condition of test material: at room temperature in the dark

Results and discussion

Auto-ignition temperature (liquids / gases)

Auto-ignition temperature:

375 °C

Atm. press.:

>= 994.4 - <= 1 002.1 hPa

Remarks on result:

other:

Any other information on results incl. tables

Preliminary test

The estimated auto-ignition temperature was 380°C.

Main study

Ignition of the test substance within 5 minutes after introduction was observed with each sample volume and with each test a minimum auto-ignition temperature was obtained. The maximum deviation between the three values was < 20°C (see the table below). According to the guidelines, no further testing was required.

Test	Volume (µL)	Auto-ignition temperature (°C)	Ignition delay (s)	Colour of the flame	Minimum auto-ignition temperature (°C)
Test 1	50	381	6	orange	378
	70	378	6	orange
	100	383	6	orange
Test 2	125	385	5	orange	378
	150	378	7	orange
	250	383	9	orange
Test 3	175	378	7	orange	376
	185	376	7	orange
	200	377	6	orange

The lowest temperature at which ignition of the test substance occurred was 376°C (in Test 3). This temperature was rounded off to the nearest multiple of 5°C giving an auto-ignition temperature of the test substance of 375°C.

Applicant's summary and conclusion

Conclusions:

A commercially available auto-ignition temperature apparatus was used for the determination of the degree of auto-ignitability of the substance. The test substance is auto-ignitable with an auto-ignition temperature of 375°C at 994.4 – 1002.1 hPa.