Amino functional alkoxysilanes

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:

2017-03-29 to 2017-04-04

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

Qualifier:

according to guideline

Guideline:

AFNOR: NF T 20-037

Version / remarks:

1985

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Auto-ignition temperature:

276 °C

Atm. press.:

1 013 hPa

Remarks on result:

other: 276 ± 3°C

Preliminary test

Injection No.	Volume of test item injected in the oven (µL)	Temperature (°C)	Temperature (°C)	Auto-ignition	Auto-ignition	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Atm pressure (kPa)	Relative humidity (%)
		Observed	Corrected	Y/N	Lag (secs)	Observed	Corrected
1	70	96	96	N	/	/	/	99.3	43
2	70	138	138	N	/	/	/	99.2	43
3	70	197	197	N	/	/	/	99.2	41
4	70	251	251	N	/	/	/	99.1	39
5	70	303	303	Y	1	332	332	99.1	36
6	70	284	284	N	/	/	/	99.0	32
7	70	290	290	Y	4	306	306	99.0	32
8	90	284	284	Y	5	308	308	99.0	30
9	90	282	282	Y	6	305	305	99.0	36
10	90	278	278	N	/	/	/	99.0	37
11	110	278	278	N	/	/	/	99.0	39
12	110	280	280	Y	7	301	301	99.0	39
13	90	280	280	N	/	/	/	99.0	38
14	130	278	278	Y	8	303	303	99.0	37
15	130	276	276	N	/	/	/	98.7	39
16	150	276	276	Y	11	291	291	98.7	37
17	150	274	274	N	/	/	/	98.4	33
18	170	274	274	N	/	/	/	98.4	34
19	170	276	276	Y	10	293	293	98.4	34
20	190	276	276	N	/	/	/	98.4	34

 

The lowest auto-ignition temperature was found between 274°C and 276°C (corrected values) with a volume of 170 µL.

The main test will be conducted using this volume.

Main test

Volume of test item injected in the oven 170 µL

Assay No. 1

Injection No.	Temperature (°C)	Temperature (°C)	Auto-ignition	Auto-ignition	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Atm pressure (kPa)	Relative humidity (%)
	Observed	Corrected	Y/N	Lag (secs)	Observed	Corrected
1	276	276	Y	9	296	296	98.4	32
2	275	275	N	/	/	/	98.4	32

 

Assay No. 2

Injection No.	Temperature (°C)	Temperature (°C)	Auto-ignition	Auto-ignition	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Atm pressure (kPa)	Relative humidity (%)
	Observed	Corrected	Y/N	Lag (secs)	Observed	Corrected
1	276	276	N	1	1	1	98.4	31
2	277	277	N	/	/	/	98.4	32
3	278	278	Y	11	292	292	98.3	31

 

Assay No. 3

Injection No.	Temperature (°C)	Temperature (°C)	Auto-ignition	Auto-ignition	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Atm pressure (kPa)	Relative humidity (%)
	Observed	Corrected	Y/N	Lag (secs)	Observed	Corrected
1	277	277	N	/	/	/	98.3	28
2	278	278	Y	8	298	298	98.2	26

 

Assay No. 4

Injection No.	Temperature (°C)	Temperature (°C)	Auto-ignition	Auto-ignition	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Atm pressure (kPa)	Relative humidity (%)
	Observed	Corrected	Y/N	Lag (secs)	Observed	Corrected
1	279	279	N	/	/	/	98.7	45
2	280	280	N	/	/	/	98.6	44
3	281	281	Y	9	296	296	98.6	42

 

Assay No. 5

Injection No.	Temperature (°C)	Temperature (°C)	Auto-ignition	Auto-ignition	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Atm pressure (kPa)	Relative humidity (%)
	Observed	Corrected	Y/N	Lag (secs)	Observed	Corrected
1	281	281	Y	11	301	301	98.7	37
2	279	279	Y	9	298	298	98.7	38
3	278	278	Y	13	296	296	98.7	35
4	277	277	N	/	/	/	98.7	35

 

Summary

Only the auto-ignition runs for each assay are summarised in the following table: 

Assay No.	Auto-ignition temperature (°C)	Auto-ignition temperature (°C)	Auto-ignition	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Maximal temperature of the air recorded in the centre of the test flask after auto-ignition (°C)	Atm pressure (kPa)	Relative humidity (%)
	Observed	Corrected	Lag (secs)	Observed	Corrected
1	276	276	9	296	296	98.4	32
2	278	278	11	292	292	98.3	31
3	278	278	8	298	298	98.2	26
4	281	281	9	296	296	98.6	42
5	278	278	13	296	296	98.7	35

 

Conclusion

The auto-ignition temperature of the test item was 276°C ± 3°C (corrected temperature).

 

Conclusions:

An auto-ignition temperature value of 276 ± 3°C at 1013 hPa was determined for the substance using a relevant test method and in compliance with GLP. The result is considered to be reliable.

Description of key information

Auto-ignition temperature: 276 ± 3°C at 1013 hPa (EU Method A.15)

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

276 °C

Additional information

A measured auto-ignition temperature value of 276 ± 3°C at 1013 hPa was determined for the registration substance using a relevant test method and in compliance with GLP. The result is considered to be reliable.