Reaction product of propylidynetrimethanol, propoxylated, reaction products with ammonia and 2,2-Dimethyl-3-(4-morpholinyl)propanal

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:

2013-03-08 to 2013-03-13

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:

dated 31 May 2008

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: DIN 51794

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Auto-ignition temperature:

367 °C

Atm. press.:

1 013.25 hPa

Pre-Determination

The ignition attempts of the pre-determination program are presented in the following table.

Ignition attempts pre-test

Selected T*	T Vessel	Drops used	Ignition?	Observations
°C	°C	#	yes/no
300	201.9	5	no	-
300	224.2	5	no	-
300	248.1	5	no	Fume
300	271.7	5	no	Fume
300	294.3	5	no	Fume
300	323.1	5	no	Fume
300	343.5	5	no	Fume
300	365.6	5	no	-
300	387.1	5	no	-
500	409.7	5	yes	Ignition and plop after 19 s

 *The temperature was selected at the ZPA3 corresponding to an initial oven temperature of 200 °C. Using a constant heating rate, the subsequent ignition trials were conducted every 20 ± 5 K

Main Study

The requirements for repeatability of the DIN 51794 standard are stated as follows: Three lowest values of the main study have to lie within a range of 10 K (if auto ignition temperature is below 300 °C) respectively 20 K (if auto ignition temperature is above 300 °C).

The following lowest values were recorded:

Table Lowest Values Main Study

Experiment	Value	Ignition delay	Drops used
First Experiment	367 °C	50 s	16
Second Experiment	367 °C	22 s	16
Third Experiment	367 °C	21 s	8

 

The lowest value of the auto ignition temperature is 367 °C. This value was determined using 16 respectively 8 drops test item. The test item showed auto ignition after 50 respectively 22 and 21 seconds.

Conclusions:

The auto ignition temperature of SIKA Hardener MTJ was determined to be 365 °C at 1013.25 hPa.

Executive summary:

A study was conducted to determine the auto-ignition temperature of SIKA Hardener MTJ according to Regulation (EC) No 440/2008 method A.15 and DIN 51794 Three independent determinations were conducted. The auto-ignition temperature was determined to be 367 °C in all three replicates. According to the criteria as laid down in DIN 51794 the auto ignition temperature is the lowest value of the three experiments, rounded down to a whole multiple of 5 °C. Therefore, the auto ignition temperature is stated as 365 °C. The three lowest values of the main study lay within a range of 20 K. No observations were made which might cause doubts concerning the validity of the study outcome. Thus, the validation criteria were fulfilled.

Description of key information

The auto ignition temperature of SIKA Hardener MTJ was determined to be 365 °C at 1013.25 hPa.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

365 °C

Additional information

A study was conducted to determine the auto-ignition temperature of SIKA Hardener MTJ according to Regulation (EC) No 440/2008 method A.15 and DIN 51794 Three independent determinations were conducted. The auto-ignition temperature was determined to be 367 °C in all three replicates. According to the criteria as laid down in DIN 51794 the auto ignition temperature is the lowest value of the three experiments, rounded down to a whole multiple of 5 °C. Therefore, the auto ignition temperature is stated as 365 °C. The three lowest values of the main study lay within a range of 20 K. No observations were made which might cause doubts concerning the validity of the study outcome. Thus, the validation criteria were fulfilled.