Vinylphosphonic acid

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

auto-ignition temperature (liquids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from 2017-02-20 to 2017-08-31

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

Qualifier:

according to guideline

Guideline:

DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

Batch No.: VPS9016001
Purity: 97.3 %

Key result

Auto-ignition temperature:

460 °C

Atm. press.:

>= 99 710 - <= 101 317 Pa

Table 1. Pre-test findings

Selected T	T Vessel	Drops used	Ignition?	Observations
°C	°C	5#	yes/no
300	201.3	5	no	-
300	222.4	5	no	-
300	246.7	5	no	smoke
300	268.1	5	no	smoke
300	290.9	5	no	smoke
300	314.0	5	no	smoke
300	339.9	5	no*	see below*
450	366.3	5	no	Smoke
450	375.7	5	no	Smoke
450	395.4	5	no	Smoke
450	418.1	5	no	Strong smoke
450	440.2	5	no	Strong smoke
450	462.8	5	no	Strong smoke
450	483.0	5	no	Strong smoke
450	502.3	5	no	Strong smoke
450	520.1	5	yes	Plop and flame Ignition after 44 s

* The detector had detected the hot smoke as ignition.

Atmospheric pressure during the pre-test was100523Pa.

Table 2. First test series findings

Used program	Selected T*	T Vessel	Drops used	Ignition?	Observations
	°C	°C	#	yes/no
H-A1	518	517.0	5	yes	Plop and flame Ignition after 8 s
H-A1	513	513.3	5	yes	Plop and flame Ignition after 9 s
H-A1	508	508.1	5	yes	Bang and flame Ignition after 20 s
H-A1	503	503.1	5	yes	Bang and flame Ignition after 8 s
H-A1	498	498.1	5	yes	Bang and flame Ignition after 9 s
H-A1	493	493.4	5	no	Strong smoke
H-A1	493	493.6	9	yes	Bang and flame Ignition after 10 s
H-A1	488	488.7	9	yes	Plop and flame Ignition after 26 s
H-A1	483	483.0	9	no	Strong smoke
H-A1	483	483.3	5	no	Smoke
H-A1	483	483.3	13	yes	Plop and flame Ignition after 12 s
H-A1	478	477.3	13	yes	Plop and flame Ignition after 22 s
H-A1	473	472.9	13	no	Strong smoke
H-A1	473	472.6	9	no	Strong smoke
H-A1	473	472.8	5	no	Smoke
H-A1	473	472.8	17	yes	Plop and flame Ignition after 12 s
H-A1	468	468.8	17	no	Strong smoke
H-A1	468	468.7	13	no	Strong smoke
H-A1	468	468.7	9	no	Strong smoke
H-A1	468	468.3	5	no	Strong smoke
H-A2	471	470.8	17	yes	Plop and flame Ignition after 65 s
H-A2	469	469.0	17	no	Strong smoke
H-A2	469	469.3	13	no	Strong smoke
H-A2	469	469.0	9	no	Strong smoke
H-A2	469	469.0	5	no	Strong smoke

* The selected temperature was suggested automatically by the ZPA3.

Lowest value of the first test series is 471 °C.

Table 3. Second test series findings

Used program	Selected T*	T Vessel	Drops used	Ignition?	Observations
	°C	°C	#	yes/no
H-A1	478	477.5	12	yes	Plop and flame Ignition after 14 s
H-A1	473	472.8	12	yes	Plop and flame Ignition after 11 s
H-A1	468	467.4	12	no	Strong smoke
H-A1	468	468.0	8	no	Strong smoke
H-A1	468	467.7	4	no	Strong smoke
H-A1	468	467.4	16	yes	Plop and flame Ignition after 30 s
H-A1	463	462.8	16	yes	Plop and flame Ignition after 24 s
H-A1	458	458.3	16	no	Strong smoke
H-A1	458	458.2	12	no	Strong smoke
H-A1	458	457.0	8	no	Strong smoke
H-A1	458	457.7	4	no	Smoke
H-A1	458	457.5	20	no	Strong smoke
H-A2	461	460.6	16	no	Strong smoke
H-A2	461	461.0	12	no	Strong smoke
H-A2	461	461.3	8	no	Strong smoke
H-A2	461	461.3	4	no	Smoke
H-A2	461	461.3	20	no	Strong smoke

* The selected temperature was suggested automatically by the ZPA3.

Lowest value of the second test series is 463 °C.

Table 4. Third test series findings

Used program	Selected T*	T Vessel	Drops used	Ignition?	Observations
	°C	°C	#	yes/no
H-A1	468	467.5	12	no	Strong smoke
H-A1	468	467.5	8	no	Strong smoke
H-A1	468	468.0	4	no	Strong smoke
H-A1	468	468.3	16	no	Strong smoke
H-A1	468	468.2	20	yes	Plop and flame Ignition after 31 s
H-A1	463	463.4	20	no	Strong smoke
H-A1	463	462.0	16	no	Strong smoke
H-A1	463	462.1	12	no	Strong smoke
H-A1	463	462.0	8	no	Strong smoke
H-A1	463	462.1	4	no	Smoke
H-A2	466	465.7	20	yes	Plop and flame Ignition after 13 s
H-A2	464	463.7	20	yes	Plop and flame Ignition after 19 s
H-A2	462	461.6	20	no	Strong smoke
H-A2	462	461.6	16	no	Strong smoke
H-A2	462	462.3	12	no	Strong smoke
H-A2	462	461.6	8	no	Strong smoke
H-A2	462	461.8	4	no	Strong smoke

* The selected temperature was suggested automatically by the ZPA3.

Lowest value of the third test series is 464 °C.

Table 5. Lowest values of all test series

Experiment	Value	Ignition delay	Drops used
First test series	471 °C	65 s	17
Second test series	463 °C	24 s	16
Third test series	464 °C	19 s	20

The lowest value of the auto-ignition temperature is 463 °C. This value was determined using 16 drops test item. The test item showed auto-ignition after 24 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 460 °C.

Conclusions:

The auto-ignition temperature of the test item was determined to be 460 °C.

Executive summary:

A study was conducted according to Regulation (EC) No 440/2008 Part A.15 and DIN 51794 (2003) to determine the auto-ignition temperature of the test substance. In a preliminary test the approximate auto-ignition temperature was determined. For the main test three test series were conducted. The temperature determined in the preliminary test was used as starting point for the main test. The temperature was decreased by 2 - 5 °C until no ignition was observed. According to criteria laid down in Regulation EC No. 440/2008 method A.15 and DIN 51794 the auto-ignition temperature is the lowest value rounded down to a whole multiple of 5 °C. Therefore, the auto-ignition temperature was determined to be 460 °C at 997 -1013 hPa.

Description of key information

The auto-ignition temperature of the test item was determined to be 460 °C at 1013 hPa.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

460 °C

Additional information

A study was conducted according to Regulation (EC) No 440/2008 Part A.15 and DIN 51794 (2003) to determine the auto-ignition temperature of the test substance. In a preliminary test the approximate auto-ignition temperature was determined. For the main test three test series were conducted. The temperature determined in the preliminary test was used as starting point for the main test. The temperature was decreased by 2 - 5 °C until no ignition was observed. According to criteria laid down in Regulation EC No. 440/2008 method A.15 and DIN 51794 the auto-ignition temperature is the lowest value rounded down to a whole multiple of 5 °C. Therefore, the auto-ignition temperature was determined to be 460 °C at 997 -1013 hPa.