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Physical & Chemical properties

Flash point

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Reference
Endpoint:
flash point of flammable liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
05 JUL 2021 to 04 OCT 2021
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.9 (Flash-Point)
Version / remarks:
31 May 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.6315 (Flammability)
Version / remarks:
August 1996
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: UN Handbook “Manual of Tests and Criteria” Rev. 7, 2019, Method 32.4 “Test methods used for determining flash point and viscosity”
Version / remarks:
Rev. 7, 2019
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
non-equilibrium method closed cup
Flash point apparatus:
Pensky-Martens apparatus
Flash point:
129.5 °C
Atm. press.:
1 013 hPa
Remarks on result:
other: flash point was internally corrected to standard pressure

FINDINGS


Pre-Test for Safety





























ObservationsTemperatures in °C
Individual air bubbles, the color was slightly yellowfrom 140
Several air bubbles visiblefrom 235
Bubbles came fasterfrom 248
Boiling chain, gas burner offfrom 270.2
Chain broke255

After cooling down the test item remained yellow.


Determination of the flash point




































ProgramExpected flash point (setting) in °CFlash point (found) in °CMean in °CNotes
Search255130.7 not used for calculation (pre-test)
EN ISO 2719-A131133.5-not used for calculation
131129.5129.5difference < 2 K
131129.5

EVALUATION AND RESULT
The flash point is given as the mean value of the duplicate valid determination (second and third determination).
The deviation of the first flash point value to the second and third flash point value were above 2 K, therefore this value was not taken for evaluation.
The measured flash point is therefore 129.5 °C (corresponding to 402.7 K).


 


DISCUSSION
The difference between the two valid values which were measured was below 2 K. For this reason, the determination was considered valid.

Interpretation of results:
other: EU GHS criteria not met
Conclusions:
The measured flash point is 129.5 °C (corresponding to 402.7 K).
Executive summary:

The flash point of the sample was assessed during a GLP-study according to EU Method A.9, OPPTS 830.6315 and UN Manual Test Methods 32.4.


A small amount (approx. 2 mL) of the test item was heated in a test tube in an aluminium block with a Gas burner. A boiling chain was observed at 270.2 °C. The chain broke at 255 °C. After cooling, the test item remained as a yellowish liquid.
Then, a pre-test and a main test with three experiments were performed using a flashpoint tester.
The flashpoint of N-Butyldiethanolamine is stated as 129.5 °C (corresponding to 402.7 K). This value is the mean value of two independent determinations (second and third determination.

Description of key information

GLP-study according to EU Method A.9, OPPTS 830.6315 and UN Manual Test Methods 32.4: The flashpoint of N-Butyldiethanolamine is stated as 129.5 °C (corresponding to 402.7 K).

Key value for chemical safety assessment

Flash point at 101 325 Pa:
129.5 °C

Additional information

The flash point of the sample was assessed during a GLP-study according to EU Method A.9, OPPTS 830.6315 and UN Manual Test Methods 32.4.


A small amount (approx. 2 mL) of the test item was heated in a test tube in an aluminium block with a Gas burner. A boiling chain was observed at 270.2 °C. The chain broke at 255 °C. After cooling, the test item remained as a yellowish liquid.
Then, a pre-test and a main test with three experiments were performed using a flashpoint tester.
The flashpoint of N-Butyldiethanolamine is stated as 129.5 °C (corresponding to 402.7 K). This value is the mean value of two independent determinations (second and third determination).