Fatty acids, linseed-oil, reaction products with 2-amino-2-(hydroxymethyl)-1,3-propanediol and formaldehyde

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:

2018-03-20 to 2018-05-17

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))

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

- Batch No.: 3773982
- Appearance: colourless liquid
- Composition: 98.6% VOELOFA Monomer, 1.0% Xylene, 0.4% n-Butanol
- CAS No.: 80584-99-2
- EINECS-No.: 279-510-2
- Molecular weight: Ø 1200 g/mol
- Purity: 100% LC/ELSD
- Homogeneity: homogeneous
- Expiry date: August 2019
- Storage: Fridge (2-8 °C); Keep away from light

Key result

Auto-ignition temperature:

395 °C

Atm. press.:

ca. 1 013.3 hPa

Preliminary test

An approximate value of the ignition temperature of the test item was first determined by a preliminary test. Table 1 gives the results of the preliminary test. In the preliminary test, the lowest temperature at which an ignition occurred was 417.9 °C. The atmospheric pressure during the preliminary test was 99750 Pa.

 

Table 1: Results of the preliminary test

Selected T* / °C	T Vessel / °C	Drops used	Ignition / yes/no	Observations
300	200.0	5	no	smoke
300	220.0	5	no	smoke
300	241.4	5	no	smoke
300	261.8	5	no	smoke
300	283.6	5	no	smoke
300	305.6	5	no	smoke
300	328.6	5	no	smoke
300	350.2	5	no	smoke
300	373.3	5	no	smoke
495	395.1	5	no	smoke
495	417.9	5	yes	Flame and pop, ignition after 26 s

*The temperature was selected at the ZPA3 corresponding to an initial oven temperature of 200 °C. As the test item showed no ignition at 373.3 °C, a higher temperature was selected for the subsequent ignition trials corresponding to a new initial oven temperature of 395 °C. Using a constant heating rate, the subsequent ignition trials were conducted every 20 ± 5 K.

Main test

First test series:

The ignition attempts of the first test series of the main determination are shown in Table 2. The lowest temperature at which an ignition occurred in the first test series was 398 °C. The atmospheric pressure during the first thirteen ignition trials was 100881 Pa and during the remaining ignition trials 100193 Pa.

Table 2: Ignition attempts first test series

Used program	Selected T / °C	T Vessel / °C	Drops used	Ignition / yes/no	Observations
H-A1	415	415.3	5	no	smoke
H-A1	415	415.2	9	yes	Flame and pop, ignition after 17 s
H-A1	410	410.2	9	yes	Flame and pop, ignition after 23 s
H-A1	405	405.4	9	yes	Flame and pop, ignition after 15 s
H-A1	400	399.7	9	no	smoke
H-A1	400	400.4	5	no	smoke
H-A1	400	400.1	13	no	smoke
H-A1	400	399.9	17	yes	Flame and pop, ignition after 30 s
H-A1	395	395.4	17	no	smoke
H-A1	395	395.1	13	no	smoke
H-A1	395	395.2	9	no	smoke
H-A1	395	394.9	5	no	smoke
H-A2	398	398.0	17	yes	Flame and pop, ignition after 70 s
H-A2	396	395.9	17	no	smoke
H-A2	396	395.5	13	no	smoke
H-A2	396	395.7	9	no	smoke
H-A2	396	396.0	5	no	smoke

Second test series:

The ignition attempts of the second test series of the main determination are shown in Table 3. The lowest temperature at which an ignition occurred in the second test series was 400 °C. The atmospheric pressure during the first thirteen ignition trials was 100193 Pa and during the remaining ignition trials 99231 Pa.

Table 3: Ignition attempts second test series

Used program	Selected T / °C	T Vessel / °C	Drops used	Ignition / yes/no	Observations
H-A1	405	404.8	17	no	smoke
H-A1	405	404.7	13	no	smoke
H-A1	405	405.1	9	yes	Flame and pop, ignition after 28 s
H-A1	400	400.0	9	no	smoke
H-A1	400	399.7	5	no	smoke
H-A1	400	400.2	13	yes	Flame and pop, ignition after 20 s
H-A1	395	395.1	13	no	smoke
H-A1	395	395.4	9	no	smoke
H-A1	395	395.1	5	no	smoke
H-A1	395	395.4	17	no	smoke
H-A2	398	397.5	13	no	smoke
H-A2	398	398.0	9	no	smoke
H-A2	398	398.3	5	no	smoke
H-A2	398	397.7	17	no	smoke

Third test series:

The ignition attempts of the third test series of the main determination are shown in Table 4. The lowest temperature at which an ignition occurred in the third test series was 405 °C. The atmospheric pressure during the ignition trials was 99231 Pa.

Table 4: Ignition attempts third test series

Used program	Selected T / °C	T Vessel / °C	Drops used	Ignition / yes/no	Observations
H-A1	405	404.7	13	yes	Flame and pop, ignition after 13 s
H-A1	400	399.8	13	no	smoke
H-A1	400	400.3	9	no	smoke
H-A1	400	400.0	5	no	smoke
H-A1	400	400.1	17	no	smoke
H-A2	403	403.1	13	no	smoke
H-A2	403	402.8	9	no	smoke
H-A2	403	403.1	5	no	smoke
H-A2	403	403.3	17	no	smoke

Result

According to the applied DIN 51794 three lowest values of the main test have to lie within a range of 10 K (if auto-ignition temperature is above 300 °C). Table 5 summarizes the lowest temperatures at which an ignition occurred in the three test series of the main test.

Table 5: Summary of the results of the main test

Experiment	Value	Ignition delay	Drops used
First test series	398 °C	70 s	17
Second test series	400 °C	20 s	13
Third test series	405 °C	13 s	13

Conclusions:

The auto-ignition temperature of the test item was determined in three independent determinations. A lowest auto-ignition temperature of 398 °C was found.

Executive summary:

The auto-ignition temperature of the test item was determined in three independent determinations according to EU method A.15. A lowest auto-ignition temperature of 398 °C was found. Therefore, the auto-ignition temperature of the test item according to EU method A.15 (rounded down to a whole multiple of 5 °C) is 395 °C.

Description of key information

The auto-ignition temperature of the test item was determined in three independent determinations according to EU method A.15. A lowest auto-ignition temperature of 398 °C was found. Therefore, the auto-ignition temperature of the test item according to EU method A.15 (rounded down to a whole multiple of 5 °C) is 395 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

395 °C