7-(4-ethyl-1-methyloctyl)quinolin-8-ol

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:

14 - 15 March 2019

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

Version / remarks:

31 May 2008

Deviations:

yes

Remarks:

instrumental program is not mentioned in the guideline.

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material:
Sponsor / 1702-18-01/O
- Expiration date of the lot/batch:
25 March 2021
- Purity test date:
26 March 2018

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material:
Room Temperature (20 ± 5 °C); Keep away from light
- Stability under test conditions:
Stable
- Solubility and stability of the test substance in the solvent/vehicle:
H2O: < 0.1 g/L; Ethanol: unknown; acetone: > 1 g/L; CH3CN: unknown; DMSO: unknown

Key result

Auto-ignition temperature:

385 °C

Atm. press.:

101 325 Pa

 First test series

The ignition attempts of the first test series of the main determination are presented in the following table.

 Ignition attempts first test series

Selected T	T Vessel	Drops used	Ignition?	Observations
°C	°C	#	yes/no
406.1	405.9	5	yes	Flame and plop
401.1	401.3	5	yes	Flame and plop
396.1	396.1	5	yes	Flame and plop
391.1	391.3	5	no	Smoke
391.1	391.1	7	yes	Flame and plop
389.1	389.4	7	yes	Flame and plop
387.1	387.4	7	no	Smoke
387.1	387.5	9	no	Smoke
387.1	387.3	13	yes	Flame and plop
385.1	385.0	13	no	Smoke
385.1	385.1	5	no	Smoke
385.1	384.9	7	no	Smoke
385.1	385.3	9	no	Smoke
Result given by the instrument
-	387.52	13	yes after 25 seconds

 

The ignition trials were conducted on 14. Mar. 2019 (atmospheric pressure during the trials 994.0 mbar).

Lowest value of the first test series is 387.52 °C, the drops, which needed, were 13 and the time until the ignition was detected, are 25 seconds.

        

Second test series

The ignition attempts of the second test series of the main determination are presented in the following table.

  Ignition attempts second test series

Selected T	T Vessel	Drops used	Ignition?	Observations
°C	°C	#	yes/no
407.5	407.7	5	yes	Flame and plop
402.5	402.8	5	yes	Flame and plop
397.5	397.5	5	yes	Flame and plop
392.5	392.4	5	no	Smoke
392.5	392.4	7	yes	Flame and plop
390.5	390.8	7	yes	Flame and plop
388.5	388.6	7	yes	Flame and plop
386.5	386.4	7	yes	Flame and plop
384.5	384.7	7	no	Smoke
384.5	384.8	9	no	Smoke
384.5	384.5	13	no	Smoke
384.5	384.4	5	no	Smoke
Result given by the instrument
-	387.22	7	yes after 23 seconds

 

The ignition trials were conducted on 15. Mar. 2019 (atmospheric pressure during the trials 991.1 mbar)

Lowest value of the second test series is 387.22 °C, the drops, which needed, were 7 and the time until the ignition was detected, are 23 seconds.

 Third test series

The ignition attempts of the third test series of the main determination are presented in the following table.

 Ignition attempts third test series

Selected T	T Vessel		Drops used	Ignition?	Observations
°C	°C		#	yes/no
407.2	407.6		5	yes	Flame and plop
402.2	402.3		5	yes	Flame and plop
397.2	397.2		5	no	Smoke
397.2	397.1		7	yes	Flame and plop
395.2	395.3		7	yes	Flame and plop
393.2	393.5		7	yes	Flame and plop
391.2	391.3		7	no	Smoke
391.2	391.4		9	no	Smoke
391.2	391.1		13	no	Smoke
391.2	391.1		5	no	Smoke
Result given by the instrument
-	393.75	7		yes after 23 seconds

 

The ignition trials were conducted on 15. Mar. 2019 (atmospheric pressure during the trials 991.1 mbar).

Lowest value of the third test series is 393.75 °C, the drops, which needed, were 7 and the time until the ignition was detected, are 23 seconds.

 

Conclusions:

The auto ignition temperature was determined in three independent determinations. A lowest value of the main test of 387 °C was found.
Therefore, the auto-ignition temperature according to EU A.15 (rounded down to a whole multiple of 5 °C) of 7-(4-ethyl-1-methyloctyl)quinolin-8-ol is stated as 385 °C.

Description of key information

One key study is performed in accordance with EU test method A.15 and under the conditions of GLP.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

385 °C

Additional information

The auto-ignition temperature according to EU A.15 (rounded down to a whole multiple of 5 °C) of 7-(4-ethyl-1-methyloctyl)quinolin-8-ol is stated as 385 °C. The substance is not considered to be classified in accordance with Regulation (EC) No. 1272/2008 (EU CLP).