Dodecyltrimethylammonium bromide

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from 2018-05-23 to 2018-11-13

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: VDI 2263, part 1 1990, test methods for the determination of the safety characteristics of dusts; UN Transport Regulations, Appendix 6, Screening Procedures (Substances which may be liable to spontaneous combustion (Division 4.2))

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Remarks on result:

no self-ignition observed up to the melting point

A first endothermic process was detected starting at approximately at 60 °C. At approximately 150 °C an exothermic effect could be observed, which led to a maximum temperature of app. 200 °C. A second endothermic effect started at around 220 °C. At this temperature the test item melted and flowed out of the basket. At the end of the test the basket was empty. The exothermic effects did not increase up to 400 °C, therefore, the test item has no self-ignition temperature according to EU A.16 up to the melting point.

Conclusions:

The test item has no self-ignition temperature up to the melting point.

Executive summary:

A study was conducted according to VDI 2263, part 1 1990, test methods for the determination of the safety characteristics of dusts (UN Transport Regulations, Appendix 6, Screening Procedures (Substances which may be liable to spontaneous combustion (Division 4.2)) to determine the self-ignition temperature of the test item. To determine the self-ignition properties of the test item the Grewer Oven was used. The test item was filled in a small basket of a volume of 8 cm3 and the basket was placed in the oven. Five smaples were determined simultaneously. An additional basket was filled with a reference material (graphite). The temperature of the oven was increased with a heating rate of 1.2 K/min in an air stream of 100 to 120 L per hour. The temperature of the sample was recorded as a function of time in 10 second intervals.A first endothermic process was detected starting at approximately at 60 °C. At approximately 150 °C an exothermic effect could be observed, which led to a maximum temperature of app. 200 °C. A second endothermic effect started at around 220 °C. At this temperature the test item melted and flowed out of the basket. At the end of the test the basket was empty. The exothermic effects did not increase up to 400 °C, therefore, the test item has no self-ignition temperature according to EU A.16 up to the melting point.

Description of key information

The test item has no self-ignition temperature up to the melting point.

Additional information

A study was conducted according to VDI 2263, part 1 1990, test methods for the determination of the safety characteristics of dusts (UN Transport Regulations, Appendix 6, Screening Procedures (Substances which may be liable to spontaneous combustion (Division 4.2)) to determine the self-ignition temperature of the test item. To determine the self-ignition properties of the test item the Grewer Oven was used. The test item was filled in a small basket of a volume of 8 cm3 and the basket was placed in the oven. Five smaples were determined simultaneously. An additional basket was filled with a reference material (graphite). The temperature of the oven was increased with a heating rate of 1.2 K/min in an air stream of 100 to 120 L per hour. The temperature of the sample was recorded as a function of time in 10 second intervals.A first endothermic process was detected starting at approximately at 60 °C. At approximately 150 °C an exothermic effect could be observed, which led to a maximum temperature of app. 200 °C. A second endothermic effect started at around 220 °C. At this temperature the test item melted and flowed out of the basket. At the end of the test the basket was empty. The exothermic effects did not increase up to 400 °C, therefore, the test item has no self-ignition temperature according to EU A.16 up to the melting point (reference 4.12-1).