Amines, di-C16-18-alkylmethyl

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

auto-ignition temperature (liquids)

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Study period:

08-2010

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Justification for type of information:

More information on the justification regarding the category approach of the dialkylmethyl amines can be found in Section 13.2.

Reason / purpose for cross-reference:

read-across source

Qualifier:

according to guideline

Guideline:

EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))

Deviations:

no

GLP compliance:

no

Auto-ignition temperature:

252 °C

Atm. press.:

989 mBar

Remarks on result:

other: Room temperature was 25°C. The ignition delay observed at this temperature was 5 seconds, and the maximum temperature increase at the middle of the flask was 46°C.

Table 1: The chronologically observed phenomena are listed in the following table.

Temperature Set (°C)	Regulation temperature (°C) – Wall of the flask	Measured temperature in the middle of the flask (for information) (°C)	injected volume (μl)	Ignition delay (s)	Comments	Temperature increase measured (°C)
300	300	276	100	< 5	Ignition – white smokes	32
295	295	277	100	-	No ignition – white smokes	17
295	295	277	200	-	No ignition – white smokes	41
295	295	277	50	< 5	Ignition – white Smokes	36
290	289	267	50	10	Ignition – white Smokes	20
284	284	254	50	10	Ignition – white Smokes	30
279	279	250	50	15	Ignition – white Smokes	22
274	273	234	50	20	Ignition – white Smokes - noise	36
268	268	240	50	20	Ignition – white Smokes - noise	25
263	261	233	50	-	No ignition – white smokes	+2
263	263	251	50	20	Ignition – white smokes	21
258	258	243	50	15	Ignition – white smokes	14
253	253	235	50	-	No ignition – white smokes	0
253	252	240	50	20	Ignition – white Smokes - noise	44
247	247	229	50	-	No ignition – white smokes	0
247	247	233	50	-	No ignition – white smokes	0
247	247	234	30	-	No ignition – white smokes	0
247	247	224	20	-	No ignition – white smokes	0
247	247	235	70	-	No ignition – white smokes	0
247	247	219	100	-	No ignition – white smokes	8

Conclusions:

The auto-ignition temperature of the test substance was determined to be 252°C ± 5°C.

Executive summary:

The Auto-Ignition temperature has been determined according to EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases)).

The Auto-Ignition temperature measured for the substance was 252°C ± 5°C. The ignition delay observed at this temperature was 5 seconds, and the maximum temperature increase at the middle of the flask was 46°C.

Description of key information

No data is available for the substance itself. The value has been read across from a structurally similar substance (C10 alkyl chain with CAS no. 7396-58-9). The auto ignition temperature of the structurally similar substance has been measured to be 252 °C. The conclusion is that the substance registered (Amines, di-C16-18 alkylmethyl) has a similar auto ignition temperature of 252 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

252 °C