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Physical & Chemical properties

Auto flammability

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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:
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.