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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
31 October 2017 to 19 December 2017
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))
GLP compliance:
yes (incl. QA statement)
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: Sponsor and 10037-115-5
- Expiration date of the lot/batch: 06 June 2019
- Purity test date: 06 June 2017
Key result
Auto-ignition temperature:
385 °C
Atm. press.:
1 033 hPa

Preliminary Test

The estimated auto-ignition temperature was 445°C.

Main Study

The results of the main study on the determination of the auto-ignition temperature of the test item are given in Table 8.

Ignition of the test item within 5 minutes after introduction was observed with each sample volume and with each test a minimum auto-ignition temperature was obtained. The maximum deviation between the three values was < 20°C. According to the guidelines, no further testing was required.

The lowest temperature at which ignition of the test item occurred was 388°C. This temperature was rounded down to the nearest multiple of 5°C giving an auto-ignition temperature of the test item of 385°C.

Table 8          
Auto-ignition Temperature of the Test Item

Test

Volume


[μL]

Auto-ignition
temperature

[°C]

Ignition delay



[s]

Colour of the flame

Minimum auto-ignition
temperature
[°C]

1

70

443

14

green

398

 

150

414

16

green

 

 

300

401

8

green

 

 

600

398

9

green

 

 

850

401

6

green

 

2

200

411

10

green

396

 

500

396

7

green

 

 

700

397

9

green

 

3

350

403

15

green

388

 

550

388

9

green

 

 

650

395

8

green

 

Conclusions:
Commercially available auto-ignition temperature apparatus was used for the determination of the degree of auto-ignitability of Trimethoxyboroxine (TMBX).
The test item is auto-ignitable with an auto-ignition temperature of 385°C. The atmospheric pressure was 991 and 1033 hPa.

Description of key information

Commercially available auto-ignition temperature apparatus was used for the determination of the degree of auto-ignitability of Trimethoxyboroxine (TMBX). The test item is auto-ignitable with an auto-ignition temperature of 385°C.

The atmospheric pressure was 991 and 1033 hPa.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
385 °C

Additional information

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