4-hydroxybutan-2-one

Auto flammability

Administrative data

Endpoint:

auto-flammability

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2015

Report date:

2015

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

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

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

4-hydroxybutan-2-one

EC Number:

209-693-6

EC Name:

4-hydroxybutan-2-one

Cas Number:

590-90-9

Molecular formula:

C4H8O2

IUPAC Name:

4-hydroxybutan-2-one

Test material form:

other: liquid

Details on test material:

- Name of test material (as cited in study report): 4-Hydroxybutan-2-one
- Physical state: Light yellow liquid
- Analytical purity: approximately 95 %
- Lot/batch No.: 10781727
- Expiration date of the lot/batch: November 04, 2016
- Storage condition of test material: 10-30°C

Results and discussion

Auto-ignition temperature (liquids / gases)

Auto-ignition temperature:

405 °C

Atm. press.:

1 016.7 - 1 024 hPa

Remarks on result:

other:

Any other information on results incl. tables

4.3. Individual results

4.3.1. Preliminary test

The following table shows the results of the preliminary test. Temperatures where auto-ignition was detected are marked with +; temperatures where no auto-ignition was detected are marked with - in the below table. The amount of test item tested at each measurement is indicated as numbers of portions (i.e. drops). The results are summarized in the following table.

Preliminary test
T / °C	portions	+ / -	Time lag / s
202	5	-	-
252	5	-	-
302	5	-	-
252	5	-	-
402	5	-	-
452	5	+	2
422	5	-	-
442	5	+	3
432	5	+	4
427	5	+	6
barometric pressure: 1019.2 hPa

The lowest auto-ignition temperature of the test item was determined to be 427 °C in the preliminary test.

4.3.2. Main test

The following tables show the results of the main tests. Temperatures where auto-ignition was detected are marked with +; temperatures where no auto-ignition was detected are marked with - in the below table. The amount of test item tested at each measurement is indicated as numbers of portions (i.e. drops). The results are summarized in the following tables.

1st main test (5 °C steps)				1st continued main test (5 °C steps)
T / °C	portions	+ / -	Time lag / s	T / °C	portions	+ / -	Time lag / s
427	5	+	5	403	10	-	-
422	5	-	-	403	4	-	-
422	3	+	6	403	8	-	-
417	3	+	6	403	9	-	-
412	3	+	8
408	3	+	10
403	3	-	-
403	2	-	-
403	5	-	-
403	7	-	-
403	1	-	-
403	6	-	-
barometric pressure: 1023.5 hPa				barometric pressure: 1022.0 hPa

1st main test (2 °C steps)
T / °C	portions	+ / -	Time lag / s
408	3	+	10
406	3	+	11
404	3	-	-
404	4	-	-
404	2	-	-
404	8	-	-
404	5	-	-
404	1	-	-
404	6	-	-
404	10	-	-
404	7	-	-
404	9	-	-
barometric pressure: 1024.0 hPa

2nd main test (2 °C steps)
T / °C	portions	+ / -	Time lag / s
406	3	+	11
404	3	-	-
404	6	-	-
404	2	-	-
404	5	-	-
404	9	-	-
404	4	-	-
404	7	-	-
404	1	-	-
404	8	-	-
404	10	-	-
barometric pressure: 1017.7 hPa

3rd main test (2 °C steps)
T / °C	portions	+ / -	Time lag / s
406	3	+	11
404	3	-	-
404	6	-	-
404	2	-	-
404	5-	-	-
404	1	-	-
404	4	-	-
404	10	-	-
404	9	-	-
404	7	-	-
404	8	-	-
barometric pressure: 1016.7 hPa

The results of the main test are compiled in the following table.

Main test series	Auto-ignition temperature / °C	Time lag / s
1st main test	406	11
2nd main test	406	11
3rd main test	406	11

The lowest auto-ignition temperature of the test item was determined to be 406 °C in the main test. Due to safety reasons and according to the guidelines the lowest measured temperature at which an ignition was observed was rounded to the next lower number divisible by 5, giving a value of 405 °C.

5. Final result

The auto-ignition temperature of the test item according to the auto-ignition test conditions in the sense of the European Commission Regulation (EC) No. 440/2008, Method A.15. was 405 °C.