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Physical & Chemical properties

Auto flammability

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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
23 - 27 April 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Specific details on test material used for the study:
- Identification: tris(2-hydroxyethyl)methylammonium hydroxide CAS 33667-48-0
- Batch: D26-3-3-1
- Purity: 47.4%
- Expiry: 01 December 2018
- Storage conditions: Room temperature in the dark
Key result
Auto-ignition temperature:
348 °C
Atm. press.:
>= 100.8 - <= 101.3 kPa
Remarks on result:
other: Room temperature: 17 to 19 °C

Results of the auto-ignition temperature determination are shown in the following table:

 Test temperature (ºC)

 Test volume (μL) Ignition delay (s)  Observations
 200 (clean flask)  70   >300  No ignition. Grey fumes were emitted.
 250 (clean flask)  70   >300  No ignition. Grey fumes were emitted.
 300 (clean flask)  70  >300  No ignition. Grey fumes were emitted.
 350  70  >300  No ignition. Grey fumes were emitted.
 400  70  7  Blue/yellow flame. Grey fumes were emitted.
 380  70  >300  No ignition. Grey fumes were emitted.
 390  70  2  Blue/green flame. Grey fumes were emitted.
 386  70  2  Blue/green flame. Grey fumes were emitted.
384  70  4  Blue/green flame. Grey fumes were emitted.
 382 (clean flask)  70   6  Blue/green flame. Grey fumes were emitted.
 380 (clean flask)  70  5  Blue/green flame. Grey fumes were emitted.
 376 (clean flask)  70  >300  No ignition. Grey fumes were emitted.
 378 (clean flask)  70  >300  No ignition. Grey fumes were emitted.
 378 (clean flask)  200  >300  No ignition. Grey fumes were emitted.
 378 (clean flask)  400  26  Blue/yellow flame. Grey fumes were emitted.
 376 (clean flask)  400  46  Blue/yellow flame. Grey fumes were emitted.
 374 (clean flask)  400  19  Blue/yellow flame. Grey fumes were emitted.
 372 (clean flask)  400 14   Blue/yellow flame. Grey fumes were emitted.
368 (clean flask)   400  30  Blue/yellow flame. Grey fumes were emitted.
 366 (clean flask)  400  >300  No ignition. Grey fumes were emitted.
 366 (clean flask)  600  41  Blue/yellow flame. Grey fumes were emitted.
 364 (clean flask)  600  >300  No ignition. Grey fumes were emitted.
 364 (clean flask)  800  94  Blue/yellow flame. Grey fumes were emitted.
 362 (clean flask) 800   62  Blue/yellow flame. Grey fumes were emitted.
 358 (clean flask)  800  100  Blue/yellow flame. Grey fumes were emitted.
 356 (clean flask)  800  70  Blue/yellow flame. Grey fumes were emitted.
 352 (clean flask)  800  114  Blue/yellow flame. Grey fumes were emitted.
350 (clean flask)  800  69  Blue/yellow flame. Grey fumes were emitted.
 340 (clean flask)  800  >300  No ignition. Grey fumes were emitted.
 342 (clean flask)  800  >300  No ignition. Grey fumes were emitted.
 346 (clean flask)  800  >300  No ignition. Grey fumes were emitted.
 348 (clean flask)  800  89  Blue/yellow flame. Grey fumes were emitted.
 346 (clean flask)  1000  >300  No ignition. Grey fumes were emitted.
 346 (clean flask)    600  >300  No ignition. Grey fumes were emitted.
 346 (clean flask)  400  >300  No ignition. Grey fumes were emitted.
 346 (clean flask)  200  >300  No ignition. Grey fumes were emitted.
Conclusions:
The test item has been determined to have an auto-ignition temperature of 348 ± 5 °C.

Description of key information

The test item has been determined to have an auto-ignition temperature of 348 +/-5 °C at an atmospheric pressure between 100.8 and 101.3 kPa in a GLP study according to EU A.15 (K1, Covance, 2019).

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
348 °C

Additional information