Reaction mass of isomers of disodium amino-(3-carboxylatopropanamido)hexanoate and trisodium 2,6-bis(3-carboxylatopropanamido)hexanoate

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:

4 October 2016 - 2 December 2016

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:

no

Qualifier:

according to guideline

Guideline:

DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)

Version / remarks:

May 2003

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Auto-ignition temperature:

520 °C

Atm. press.:

1 013.25 hPa

Table 1 Lowest Values main test

Experiment	Value	Ignition delay	Drops used
First test series	548 °C	27 s	2
Second test series	525 °C	26 s	2
Third test series	520 °C	22 s	2
Fourth test series	525 °C	22 s	2

The result of the first determination was discarded; therefore the lowest value of the auto ignition temperature is 520 °C. This value was determined using 2 drops test item. The test item showed auto ignition after 22 seconds. The three lowest values of the main test lay within a range of 20 K (as required for auto ignition temperatures above 300 °C). The largest difference between measured ignition temperatures was 5 K.

Conclusions:

Auto-ignition temperature of the test item was determined to be 520°C at 1013.25 hPa.

Executive summary:

Auto-ignition temperature of the test item was determined in four test series according to EU method A.15 and DIN 51794. The result of the first determination was discarded. Therefore, the auto ignition temperature is the lowest value from the lowest values of the three experiments, rounded down to a whole multiple of 5°C. The three lowest values of the main study lay within a range of 20 K as required for auto ignition temperatures above 300 °C. Thus, the validity criterion which is demanded in the DIN standard was fulfilled. Auto-ignition temperature of the test item was determined to be 520°C at 1013.25 hPa.

Description of key information

Auto-ignition temperature of the test item was determined to be 520°C at 1013.25 hPa.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

520 °C

Additional information

Auto-ignition temperature of the test item was determined in four test series according to EU method A.15 and DIN 51794. The result of the first determination was discarded. Therefore, the auto ignition temperature is the lowest value from the lowest values of the three experiments, rounded down to a whole multiple of 5°C. The three lowest values of the main study lay within a range of 20 K as required for auto ignition temperatures above 300 °C. Thus, the validity criterion which is demanded in the DIN standard was fulfilled. Auto-ignition temperature of the test item was determined to be 520°C at 1013.25 hPa.