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Physical & Chemical properties

Auto flammability

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Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
17.-18.04.2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
Deviations:
no
Remarks:
A not relevant deviation is a heating rate of 0.58 K/min instead of 0.5 K/min.
GLP compliance:
no
Key result
Relative self-ignition temperature:
377.1 °C

The temperatures which were measured in the experiment are presented in the following table. As many values were recorded, only the values every 60 minutes are presented.

Table: Presentation of Temperatures versus time

Time in min

Temperature (test substance)

in °C

Temperature (oven)

in °C

5

21.7

20.5

60

36.8

47.1

120

67.3

82.3

180

99.5

116.6

240

133.4

154.7

300

169.2

189.2

360

205.7

226.0

420

241.6

262.2

480

278.5

298.3

540

316.0

333.3

600

362.0

367.8

615

400.0

377.1

After cooling down the test substance was carbonized and changed the colour into grey.

Conclusions:
The test item Barbital Sodium is considered as auto-flammable with a Relative Self Ignition Temperature of 377.1 °C under these test conditions.

Description of key information

The test item Barbital Sodium is considered as auto-flammable with a Relative Self Ignition Temperature of 377.1 °C according to EU-Method A.16.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
377.1 °C

Additional information