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Auto flammability

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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
GLP compliance:
no
Specific details on test material used for the study:
Name β-Alanine, N-coco alkyl derivs.
Batch no. LAB PREPARATION
Appearance Yellow Liquid
CAS No. 84812-94-2
Molecular formula H25C12NHCH2CH2COOH
Production date 01. Dec. 2017
Expiry date 01. Dec. 2022
Storage Room Temperature (20 ± 5 °C)
Key result
Auto-ignition temperature:
375 °C
Atm. press.:
997.4 mBar

The requirements for repeatability of the DIN standard are stated as follows: Three lowest values of the main study have to lie within a range of 10 K (if auto ignition temperature is above 300 °C).

The following lowest values were recorded:

Lowest Values Main Test

Experiment                                   Value                                   Ignition delay                       Drops used

First test series                            379.81 °C                            32 s                                          9

Second test series                       385.24 °C                            31 s                                          5

Third test series                           384.82 °C                            32 s                                          5

The lowest value of the auto ignition temperature is 397.81 °C. This value was determined using 9 drops of test substance. The test substance showed auto ignition after 32 seconds.

The auto ignition temperature (result of determination) is the lowest value from the lowest values of the three experiments, rounded down to a whole multiple of 5 °C. Therefore, the auto ignition temperature is stated as 375 °C.

The three lowest values of the main study lay within a range of 10 K (as required for auto ignition temperatures above 300°C)

Conclusions:
The requirements for repeatability of the DIN standard are stated as follows: Three lowest values of the main study have to lie within a range of 10 K (if auto ignition temperature is above 300 °C).
The lowest value of the auto ignition temperature is 397.81 °C. This value was determined using 9 drops of test substance. The test substance showed auto ignition after 32 seconds.
The auto ignition temperature (result of determination) is the lowest value from the lowest values of the three experiments, rounded down to a whole multiple of 5 °C. Therefore, the auto ignition temperature is stated as 375 °C.
The three lowest values of the main study lay within a range of 10 K (as required for auto ignition temperatures above 300°C)

Description of key information

The auto ignition temperature (result of determination) is the lowest value from the lowest values of the three experiments, rounded down to a whole multiple of 5 °C. Therefore, the auto ignition temperature is stated as 375 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
375 °C

Additional information