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Auto flammability

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Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
GLP compliance:
yes
Auto-ignition temperature:
ca. 360 °C
Atm. press.:
>= 1 000.5 - <= 1 014.2 hPa
Remarks on result:
other:

Ignition of the test item 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. According to the guidelines, no further testing was required.

 

The lowest temperature at which ignition of the test item occurred was 362°C. This temperature was rounded down to the nearest multiple of 5°C giving an auto-ignition temperature of the test item of 360°C.

Table1      Main study –auto-ignition temperature of the test item

Test

Volume


[µL]

Auto-ignition
temperature

[°C]

Ignition delay



[s]

Colour of the flame

Minimum auto-ignition
temperature
[°C]

 

 

 

 

 

 

1

70

375

9

Orange

365

 

150

370

10

Orange

 

 

300

365

8

Orange

 

 

500

378

6

Orange

 

 

 

 

 

 

 

2

100

373

10

Orange

363

 

250

364

12

Orange

 

 

400

363

12

Orange

 

 

550

372

9

Orange

 

 

 

 

 

 

 

3

125

367

10

Orange

362

 

350

362

9

Orange

 

 

600

375

11

Orange

 

 

 

 

 

 

 

Conclusions:
Commercially available auto-ignition temperature apparatus was used for the determination of the degree of auto-ignitability of EXP1505385.

The test item is auto-ignitable with an auto-ignition temperature of 360°C at 1000.5 – 1014.2 hPa.
Executive summary:

The auto-ignition temperature of the test item was determined using a commercially available auto-ignition temperature apparatus (Chilworth Technology,). The method is applicable to test items with an auto-ignition temperature in the range 75°C – 650°C.

The test item is auto-ignitable with an auto-ignition temperature of 360°C at 1000.5 – 1014.2 hPa.

Endpoint:
auto-ignition temperature, other
Type of information:
experimental study
Adequacy of study:
key study
Study period:
31 August 2000
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
GLP compliance:
yes
Specific details on test material used for the study:
Appearance: Light brown solid
Storage conditions: Room temperature in the dark
Expiry date: September 2004
Key result
Auto-ignition temperature:
364 °C
Atm. press.:
> 971 - < 1 008 mBar
Conclusions:
The auto-ignition temperature of the test substance was found to be 364°C.
Executive summary:

The auto-ignition temperature was determined using the method described in BS 4056.

Furnace consisting of a refractory cylinder, manufactured by Carbolite, fitted with thermocouples fortemperature control and measurement.

A known quantity of the test substance was introduced into a heated open Erlenmeyer flask (200 ml) containing air. The contents of the flask were observed in a darkened room for five minutes following introduction of a sample or until ignition occurred. Ignition was evidenced by the sudden appearance of a flame inside the flask. If a flame was not observed in five minutes, the quantity of sample tested was considered non-flammable at the temperature of the test flask. If a flame was observed, the timer was stopped and the time interval between sample introduction and the appearance of the flame recorded to the nearest second as the time-lag.

The auto-ignition temperature of the test substance was found to be 364°C.

The test was repeated at different temperatures and with different sample quantities until the minimum ignition temperature was obtained. The temperature was reduced by 2°C and six replicate tests conducted using the quantity at which the lowest ignition temperature was found.

The lowest flask temperature at which ignition occurred was taken as the auto-ignition temperature.

Description of key information

Two studies are available for auto-ignition for the Substance. The study results are summarised as follows:

 

Method A16. : The auto-ignition temperature of the the Substance was found to be 360°C at 1000.5 – 1014.2 hPa.

Method A15. : The auto-ignition temperature of the the Substance was found to be 364°C.

Key value for chemical safety assessment

Additional information