Phosphorous acid, tri-C12-14-alkyl esters

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

auto-flammability

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Study generated according to valid and internationally accepted standard testing guidelines.

Qualifier:

according to guideline

Guideline:

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

GLP compliance:

not specified

Auto-ignition temperature:

>= 326 - <= 333 °C

Atm. press.:

>= 97.5 - 98.7 kPa

Remarks on result:

other: Relative humidity contained between 53% and 64%

Preliminary test :

The preliminary test results are given in the Table 6. The volume of test item injected in the oven was 70 µL.

Table6– Preliminary test results

	Self-ignition temperature(°C)		Self-ignition		Maximal temperature of the air recorded in the center of the test flask after self-ignition(°C)		Atmospheric pressure (kPa)	Relative humidity (%)
Assay No.	Observed	Corrected	Y / N	Lag(s)	Observed	Corrected
1	96	96	N	/	/	/	98.0	57
2	147	147	N	/	/	/	98.0	57
3	201	201	N	/	/	/	98.0	54
4	247	247	N	/	/	/	98.0	52
5	305	305	N	/	/	/	97.9	47
6	330	330	N	/	/	/	98.5	61
7	340	340	N	/	/	/	98.5	59
8	350	350	Y	4	361	361	98.5	59
9	345	345	Y	3	355	355	98.4	58

 

The self ignition temperature, determined during the preliminary test, is lower than 340 °C (corrected).

Main test

The volume of test item injected in the oven was 70 µL. Only the self ignition runs for each assay are summarized in the table 7.

 

Table7– Main test results

	Self-ignition temperature (°C)		Self-ignition	Maximal temperature of the air recorded in the center of the test flask after self-ignition (°C)		Atmospheric pressure (kPa)	Relative humidity (%)
Assay No.	Observed	Corrected	Lag (s)	Observed	Corrected
1	327	327	7	344	344	98.6	64
2	326	326	5	346	346	98.7	61
4	329	329	4	341	341	98.1	59
5	333	333	4	345	345	97.6	64
6	332	332	3	343	343	97.5	53

 

Remark: The assay No. 3 was made but was out of the quality criteria.

 

The mean self-ignition temperature of the test item was: 329 °C ± 6 °C (corrected temperature).

 

Conclusions:

The self-ignition temperature of phosphorous acid, triC12-C14 alkyl esters is 329 °C ± 6 °C.

Executive summary:

The self-ignition temperature has been determinated according to guideline EC method A.15.

The self-ignition temperature of phosphorous acid, triC12-C14 alkyl esters is 329 °C ± 6 °C.

Description of key information

The self-ignition temperature has been determined according to guideline EC method A.15.

The self-ignition temperature of phosphorous acid, triC12-C14 alkyl esters was 329 °C ± 6 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

329 °C

Additional information

The self-ignition temperature of the phosphorous acid, triC12-C14 alkyl esters was investigated in one GLP-compliant study performed in accordance with standard methods, without deviations. The study is considered as reliable (Klimisch 1) and is selected as a key study for the endpoint.