3-((bis(diisopropylamino)phosphanyl)oxy)propanenitrile

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:

2017-10-18 to 2018-04-17

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))

GLP compliance:

not specified

Key result

Auto-ignition temperature:

270 °C

Atm. press.:

ca. 1 013.3 hPa

Preliminary test

The following table shows the results of the preliminary test. Temperatures where auto-ignition was detected are marked with "+" and temperatures where no auto-ignition was detected are marked with "-" in the table. The amount of test item at each measurement is indicated as number of drops.

Table 1: Auto-ignition temperature (preliminary test)

T / °C	Portions (drops)	+ / -	Time lag / s
202	5	-	-
252	5	-	-
302	5	-	-
352	5	-	-
402	5	+	0
372	5	+	0
Barometric pressure: 1010.3 hPa

The lowest auto-ignition temperature of the test item was determined to be 372 °C in the preliminary test.

Main test

The following tables show the results of the main tests. Temperatures where auto-ignition was detected are marked with "+" and temperatures where no auto-ignition was detected are marked with "-" in the tables. The amount of test item at each measurement is indicated as number of drops.

Table 2: Auto-ignition temperature (1^st main test, part 1)

1^stmain test (5 K steps)				1^stmain test continued (5 K steps)
T / °C	Portions (drops)	+ / -	Time lag / s	T / °C	Portions (drops)	+ / -	Time lag / s
372	5	+	0	337	3	-	-
367	5	+	0	337	5	+	2
362	5	+	0	332	5	+	2
357	5	+	0	327	5	+	2
352	5	-	-	322	5	-	-
352	2	-	-	322	3	-	-
352	4	-	-	322	7	-	-
352	1	-	-	322	2	+	2
352	7	+	0
347	7	+	0
342	7	-	-
342	3	+	0
Barometric pressure: 1007.4 hPa				Barometric pressure: 1006.5 hPa

Table 3: Auto-ignition temperature (1^st main test, part 1)

1^stmain test continued (5 K steps)				1^stmain test continued (5 K steps)
T / °C	Portions (drops)	+ / -	Time lag / s	T / °C	Portions (drops)	+ / -	Time lag / s
317	2	-	-	287	8	+	3
317	5	+	2	282	8	-	-
312	5	-	-	282	6	-	-
312	4	+	2	282	4	+	4
307	4	+	2	277	4	-	-
302	4	+	3	277	3	-	-
297	4	-	-	277	5	+	4
297	2	-	-	272	5	+	4
297	1	-	-	267	5	-	-
297	6	+	3	267	8	-	-
292	6	+	3	267	3	-	-
287	6	-	-	267	7	-	-
Barometric pressure: 1016.2 hPa				Barometric pressure: 1019.2 hPa

Table 4: Auto-ignition temperature (1^st main test, part 1)

1^stmain test continued (5 K steps)
T / °C	Portions (drops)	+ / -	Time lag / s
267	2	-	-
267	1	-	-
267	6	-	-
267	4	-	-
267	10	-	-
267	9	-	-
Barometric pressure: 1017.5 hPa

Table 5: Auto-ignition temperature (1^st main test, part 2)

1^stmain test (2 K steps)				1^stmain test continued (2 K steps)
T / °C	Portions (drops)	+ / -	Time lag / s	T / °C	Portions (drops)	+ / -	Time lag / s
272	5	-	-	272	4	-	-
274	5	-	-	272	8	-	-
276	5	+	2
274	5	+	2
272	5	-	-
272	6	-	-
272	3	-	-
272	1	-	-
272	2	-	-
272	7	-	-
272	10	-	-
272	9	-	-
Barometric pressure: 1008.5 hPa				Barometric pressure: 1006.7 hPa

Table 6: Auto-ignition temperature (2nd main test)

2^ndmain test (2 K steps)				2^ndmain test continued (2 K steps)
T / °C	Portions (drops)	+ / -	Time lag / s	T / °C	Portions (drops)	+ / -	Time lag / s
273	5	-	-	269	4	-	-
275	5	-	-	269	5	-	-
277	5	-	-	269	3	-	-
279	5	+	0	269	1	-	-
277	5	+	0	269	6	-	-
275	5	+	2	269	7	-	-
273	5	-	-	269	2	-	-
273	3	-	-	269	10	-	-
273	6	-	-	269	9	-	-
273	1	-	-	269	8	-	-
273	4	+	2
271	4	+	2
Barometric pressure: 1011.3 hPa				Barometric pressure: 1009.8 hPa

Table 7: Auto-ignition temperature (3^rd main test)

3^rdmain test (2 K steps)				3^rdmain test continued (2 K steps)
T / °C	Portions (drops)	+ / -	Time lag / s	T / °C	Portions (drops)	+ / -	Time lag / s
272	4	-	-	274	6	-	-
274	4	-	-
276	4	+	2
274	4	-	-
274	5	-	-
274	7	-	-
274	2	-	-
274	10	-	-
274	3	-	-
274	9	-	-
274	8	-	-
274	1	-	-
Barometric pressure: 1015.9 hPa				Barometric pressure: 1017.2 hPa

Table 8: Auto-ignition temperature (4^th main test)

4^thmain test (2 K steps)				4^thmain test continued (2 K steps)
T / °C	Portions (drops)	+ / -	Time lag / s	T / °C	Portions (drops)	+ / -	Time lag / s
276	4	-	-	272	6	+	0
278	4	-	-	270	6	-	-
280	4	-	-	270	5	-	-
282	4	-	-	270	4	-	-
284	4	+	0	270	10	-	-
282	4	+	0
280	4	+	0
278	4	-	-
278	3	-	-
278	6	+	0
276	6	+	0
274	6	+	0
Barometric pressure: 1019.4 hPa				Barometric pressure: 1020.6 hPa

Table 9: Auto-ignition temperature (4^th main test)

4^thmain test continued (2 K steps)
T / °C	Portions (drops)	+ / -	Time lag / s
270	3	-	-
270	1	-	-
270	9	-	-
270	2	-	-
270	8	-	-
270	7	-	-
Barometric pressure: 1013.6 hPa

Table 10 summarises the results of the main test.

Table 10: Auto-ignition temperature (summary)

Main test series	Auto-ignition temperature / °C	Time lag / s
1^stmain test (5 K)	272	4
1^stmain test (2 K)	274	2
2^ndmain test (2 K)	271	2
3^rdmain test (2 K)	276	2
4^thmain test (2K)	272	0

The lowest auto-igntiion temperature of the test item was determined to be 271 °C in the main test. Due to safety reasons and according to the guidelines the lowest measured temperature at which an ignition was observed was rounded to the next lower number divisible by 5, giving a value of 270 °C.

Conclusions:

The auto-ignition temperature of the test item was 270 °C.

Executive summary:

The auto-ignition temperature of the test item was determined according to EC Method A.15. Based on results of the main test series, the lowest auto-ignition temperature was 270 °C.

Description of key information

The auto-ignition temperature of the test item was determined according to EC Method A.15. Based on results of the main test series, the lowest auto-ignition temperature was 270 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

270 °C