Triboron trimethyl hexaoxide

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:

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