Tris(2-methoxyethoxy)vinylsilane

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:

2019-04-08 to 2019-06-03

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:

yes

Remarks:

The validation of the EC A.15. test was conducted on 13 March 2018, the tolerance of ±10% for the validation period between the scheduled date and the experimental date was over by a couple of weeks.

Qualifier:

according to guideline

Guideline:

AFNOR: NF T 20-037

GLP compliance:

yes (incl. QA statement)

Key result

Auto-ignition temperature:

213 °C

Atm. press.:

101.3 kPa

Results

 

Preliminary test

 

Injection No.	Volume of test item injected in the oven (µL)	Temperature (°C)		Auto-ignition		Maximal temperature of the air recorded in the center of the test flask after auto-ignition(°C)		Atm pressure (kPa)	Relative humidity (%)
		Observed	Corrected	Y / N	Lag(s)	Observed	Corrected
1	70	101	101	N	/	/	/	98.2	34
2	70	148	148	N	/	/	/	98.2	32
3	70	201	202	N	/	/	/	98.2	30
4	70	246	247	Y	1	263	264	96.3	45
5	70	225	226	Y	3	237	238	96.2	44
6	70	200	201	N	/	/	/	96.2	40
7	70	209	210	N	/	/	/	96.1	39
8	70	214	215	N	/	/	/	96.1	39
9	70	221	222	Y	3	236	237	96.1	37
10	70	211*	212	Y	13	231	232	98.6	38
11	90	209	210	N	/	/	/	98.5	35
12	110	209	210	N	/	/	/	98.4	36
13	130	209	210	N	/	/	/	98.3	26
14	150	209	210	N	/	/	/	98.2	36
15	170	209	210	N	/	/	/	98.2	36
16	190	209	210	N	/	/	/	98.2	36
17	50	209	210	N	/	/	/	98.2	36
18	90	211	212	N	/	/	/	98.1	36
19	50	211	212	N	/	/	/	98.1	36

*The assay No. 10 was performed by mistake (the temperature was lower than 214°C whereas no auto-ignition was observed at 214°C) but was taken into account due to the auto-ignition observed.

 

The lowest auto-ignition temperature was found to be around 211°C (observed value) with a volume of 70 µL.

 

The main test was conducted using this volume.

 

Main test

 

Volume of test item injected in the oven: 70 µL

 

Assay No. 1

 

Injection No.	Temperature(°C)		Auto-ignition	Lag(s)	Maximal temperature of the air recorded in the center of the test flask after auto-ignition(°C)		Atmospheric pressure (kPa)	Relative humidity (%)
	Observed	Corrected			Observed	Corrected
1	212	213	Y	64	219	220	97.8	37
2	211	212	N	/	/	/	97.8	38

The assay No. 2 was not taken into account as the corrected temperature obtained was out of the quality criteria.

 

Assay No. 3

 

Injection No.	Temperature(°C)		Auto-ignition	Lag(s)	Maximal temperature of the air recorded in the center of the test flask after auto-ignition(°C)		Atmospheric pressure (kPa)	Relative humidity (%)
	Observed	Corrected			Observed	Corrected
1	216	217	Y	8	241	242	98.4	31
2	215	216	Y	19	233	234	98.4	31
3	214	215	N	/	/	/	98.4	30

 

 

Assay No. 4

 

Injection No.	Temperature(°C)		Auto-ignition	Lag(s)	Maximal temperature of the air recorded in the center of the test flask after auto-ignition(°C)		Atmospheric pressure (kPa)	Relative humidity (%)
	Observed	Corrected			Observed	Corrected
1	215	216	Y	20	226	227	98.4	27
2	214	215	Y	27	226	227	98.4	25
3	213	214	N	/	/	/	98.4	24

 

 

Assay No. 5

 

Injection No.	Temperature(°C)		Auto-ignition	Lag(s)	Maximal temperature of the air recorded in the center of the test flask after auto-ignition(°C)		Atmospheric pressure (kPa)	Relative humidity (%)
	Observed	Corrected			Observed	Corrected
1	214	215	N	/	/	/	98.4	23
2	215	216	Y	14	232	233	98.3	23

 

 

Assay No. 6

 

Injection No.	Temperature(°C)		Auto-ignition	Lag(s)	Maximal temperature of the air recorded in the center of the test flask after auto-ignition(°C)		Atmospheric pressure (kPa)	Relative humidity (%)
	Observed	Corrected			Observed	Corrected
1	216	217	Y	20	235	236	98.3	27
2	215	216	N	/	/	/	98.2	27

 

 

Summary

 

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

 

	Auto-ignition temperature(°C)		Auto-ignition	Maximal temperature of the air recorded in the center of the test flask after ignition(°C)		Atmospheric pressure (kPa)	Relative humidity (%)
Assay No.	Observed	Corrected	Lag(s)	Observed	Corrected
1	212	213	64	219	220	97.8	37
3	215	216	19	233	234	98.4	31
4	214	215	27	226	227	98.4	25
5	215	216	14	232	233	98.3	23
6	216	217	20	235	236	98.3	27

 

 

Conclusion

 

The auto-ignition temperature of the test item was 213°C ± 3°C (corrected temperature).

 

Conclusions:

An auto-ignition temperature of 213°C ± 3°C at 101.3 kPa 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: 213°C ± 3°C at 101.3 kPa (EU Method A.15)

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

213 °C

Additional information

A measured auto-ignition temperature of 213°C ± 3°C at 101.3 kPa was determined for the registered substance in accordance with EC A.15. Method (2008) and in compliance with GLP. The result is considered to be reliable and is selected as key study.

In available secondary sources to which reliability could not be assigned, auto-ignition temperature values of 210°C and 220°C at 1013 hPa were reported for the substance.