Propanoic acid, 2-(4-chloro-2-methylphenoxy)-, 2-ethylhexyl ester, (2R)-

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 1999-02-24 to 1999-10-06

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:

92/69

Deviations:

no

Qualifier:

according to guideline

Guideline:

ASTM E659 (Standard test method for autoignition temperature of liquid chemicals)

Version / remarks:

ASTM-E 659-78

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

- Analytical purity: 92.6%
- Lot/batch No(s): N3447
- Storage condition of test material: room temperature

Key result

Auto-ignition temperature:

260 °C

Atm. press.:

>= 97.8 - <= 100 kPa

In the tests at 275 °C with 500 µL sample, and at 260 °C with 1000 µL sample, there were repeated discrete flashes at the approximate intervals recorded. In the tests where no ignition was seen, white smoke was always evident. The atmospheric pressure at the time of testing was between 733.6 and 750.1 mmHg, equivalent to 97.8 to 100.0 kPa. The auto-ignition temperature of MCPP-P 2-EHE was therefore determined to be 260 °C.

Table 1: Auto-Ignition test results at 100 µL sample volume

Sample volume (µL)	Flask temperature (°C)	Ignition delay (sec)	Observations
100 100 100 100 100 100 100 100 100 100 100	400 303 201 222 240 262 280 290 284 280 275	0 <1 >300 >300 >300 >300 >300 1 50 2 >300	Immediate orange flame Orange flame No ignition seen No ignition seen No ignition seen No ignition seen No ignition seen Orange flame Orange flame Orange flame No ignition seen

 

Table 2: Auto-Ignition test results at various sample volumes

Sample volume (µL)	Flask temperature (°C)	Ignition delay (sec)	Observations
50	275	>300	No ignition seen
200	274	>300	No ignition seen
500	275	70 90 110 150 175	Orange flame Another orange flame Another orange flame Another orange flame Another orange flame
500	270	170 195	Orange flame Another orange flame
500	265	195	Orange flame
500	260	>300	No ignition seen
1000	260	270 350 370 400 440 500	Orange flame Another orange flame Another orange flame Another orange flame Another orange flame Another orange flame
1000	255	>300	No ignition seen

Conclusions:

The lowest temperature at which a flash was observed in the auto-ignition test with MCPP-P 2-EHE was 260 °C at a test volume of 1 mL. No flash was observed at 255 °C. Therefore, the auto-ignition temperature for MCPP-P 2-EHE was determined to be 260 °C.

Executive summary:

A study according to Regulation 440/2008 (EC) A.15 and ASTM E659 was performed to determine the auto-ignition of the test substance. Two series of tests were performed. One with a set sample volume of 100 µL at different temperatures and a second one with different sample volumes and temperatures. In the tests at 275 °C with 500 µL sample, and at 260 °C with 1000 µL sample, there were repeated discrete flashes at the approximate intervals recorded. In the tests where no ignition was seen, white smoke was always evident. The lowest temperature at which a flash was observed in the auto-ignition test with MCPP-P 2-EHE was 260 °C at a test volume of 1 mL. No flash was observed at 255 °C. Therefore, the auto-ignition temperature for MCPP-P 2-EHE was determined to be 260 °C.

Description of key information

The auto-ignition temperature for MCPP-P 2-EHE was determined to be 260 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

260 °C

Additional information

A study according to Regulation 440/2008 (EC) A.15 and ASTM E659 was performed to determine the auto-ignition of the test substance. Two series of tests were performed [MCPP-P Task Force, 1999]. One with a set sample volume of 100 µL at different temperatures and a second one with different sample volumes and temperatures. In the tests at 275 °C with 500 µL sample, and at 260 °C with 1000 µL sample, there were repeated discrete flashes at the approximate intervals recorded. In the tests where no ignition was seen, white smoke was always evident. The lowest temperature at which a flash was observed in the auto-ignition test with MCPP-P 2-EHE was 260 °C at a test volume of 1 mL. No flash was observed at 255 °C. Therefore, the auto-ignition temperature for MCPP-P 2-EHE was determined to be 260 °C.