3-(triethoxysilyl)propanethiol

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:

2015-11-20 to 2015-11-25

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:

30 May 2008

Deviations:

no

Qualifier:

according to guideline

Guideline:

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

Version / remarks:

2003

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Auto-ignition temperature:

205 °C

Atm. press.:

ca. 998 - ca. 1 011 mBar

Results:

The measurement results are shown in the following tables.

Preliminary test

 

Test No.	Sample Volume [µL]	Barometric pressure [mbar]	Temperature [°C]	Ignition delay[s]	Test result
1	150	998	300	0	Ignition
2	150	998	280	0	Ignition
3	150	998	260	0	Ignition
4	150	998	240	3	Ignition
5	150	998	220	10	Ignition
6	150	998	200	-	No Ignition

 

Result value from preliminary test series: ignition: 220°C, no ignition: 200°C

Main Test

 

First main test series

 

Test No.	Sample Volume [µL]	Barometric pressure [mbar]	Temperature [°C]	Ignition delay[s]	Test result
1	150	998	215	20	Ignition
2	150	998	210	-	No Ignition
3	450	998	210	30	Ignition
4	450	998	205	-	No Ignition
5	450	998	208	30	Ignition
6	450	998	206	-	No Ignition
7	350	998	206	-	No Ignition
8	250	998	206	-	No Ignition

 

Results first main test series: ignition: 208°C, no ignition: 206°C

Second main test series

 

Test No.	Sample Volume [µL]	Barometric pressure [mbar]	Temperature [°C]	Ignition delay[s]	Test result
1	450	1011	208	32	Ignition
2	450	1011	206	48	Ignition
3	450	1011	204	-	No Ignition
4	300	1011	204	-	No Ignition
5	200	1011	204	-	No Ignition
6	100	1011	204	-	No Ignition
7	60	1011	204	-	No Ignition
8	400	1011	204	-	No Ignition

 

Results second main test: ignition: 206°C, no ignition: 204°C

 

 

Retest

 

Test No.	Sample Volume [µL]	Barometric pressure [mbar]	Temperature [°C]	Ignition delay[s]	Test result
1	450	1011	206	47	Ignition
2	450	1011	204	-	No Ignition
3	350	1011	204	-	No Ignition
4	250	1011	204	-	No Ignition
5	150	1011	204	-	No Ignition
6	60	1011	204	-	No Ignition
7	100	1011	204	-	No Ignition
8	200	1011	204	-	No Ignition
9	300	1011	204	-	No Ignition

 

Results restest: ignition: 206°C, no ignition: 204°C

 

Evaluation

 

Lowest value from pretest:	220°C
Lowest value for first main test:	208°C
Lowest value for second main test:	206°C
Lowest value for retest:	206°C

 

Lowest value of all main test/retest series: 206°C

 

Correction of the temperature according to the test DKD calibration (06/2015) of the temperature measurement chain (thermocouple + monitor) is already considered (value of -0.5°C).

Conclusions:

An auto-ignition tempereature of 205°C at 998-1011 mbar 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:  205°C at 998-1011 hPa (DIN 51794)

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

205 °C

Additional information

An auto-ignition temperature value of 205°C at 998-1011 hPa was determined for the substance using a relevant test method and in compliance with GLP. The result is considered to be reliable.

In available secondary source to which reliability could not be assigned, an auto-ignition temperature value of 200°C at 1013 hPa was reported for the substance.