2,2'-butyliminodiethanol

Flash point

Link to relevant study record(s)

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

Observations	Temperatures in °C
Individual air bubbles, the color was slightly yellow	from 140
Several air bubbles visible	from 235
Bubbles came faster	from 248
Boiling chain, gas burner off	from 270.2
Chain broke	255

After cooling down the test item remained yellow.

Determination of the flash point

Program	Expected flash point (setting) in °C	Flash point (found) in °C	Mean in °C	Notes
Search	255	130.7		not used for calculation (pre-test)
EN ISO 2719-A	131	133.5	-	not used for calculation
	131	129.5	129.5	difference < 2 K
	131	129.5

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).