5-oxo-DL-proline

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:

25 July 2008 to 07 November 2008

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Study conducted to GLP in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results.

Qualifier:

according to guideline

Guideline:

EU Method A.16 (Relative Self-Ignition Temperature for Solids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks on result:

other: No self ignition temperature was observed below the test material's melting temperature.

Observations after the test:

The cube was empty. There were black charred remains on the base of the cube support. There was also evidence of white crystals around the oven door seal.

Conclusions:

Under the conditions of the study, the test material has been determined not to have a relative self-ignition temperature below its melting temperature.

Executive summary:

The relative self-ignition temperature of the test material was investigated in accordance with the standardised guideline EU Method A.16. An aliquot of the test material was suspended in a stainless steel mesh cube in an oven. A thermocouple was placed in the centre of the sample and another in the oven. The oven temperature was programmed to increase from ambient to 193 °C (which was approximately 10 °C higher than the melting temperature), at a rate of 0.5 °C/min. The temperature/time curves relating to the condition in the centre of the sample and the oven were recorded on a two channel chart recorder. The test material has been determined not to have a relative self-ignition temperature below its melting temperature.

Description of key information

The test material has been determined not to have a relative self-ignition temperature below its melting temperature.

Additional information

The relative self-ignition temperature of the test material was investigated in accordance with the standardised guideline EU Method A.16. The study was assigned a reliability score of 1 in line with the principles for assessing data quality as defined by Klimisch (1997).

An aliquot of the test material was suspended in a stainless steel mesh cube in an oven. A thermocouple was placed in the centre of the sample and another in the oven. The oven temperature was programmed to increase from ambient to 193 °C (which was approximately 10 °C higher than the melting temperature), at a rate of 0.5 °C/min. The temperature/time curves relating to the condition in the centre of the sample and the oven were recorded on a two channel chart recorder.

Under the conditions of the study, the test material has been determined not to have a relative self-ignition temperature below its melting temperature.