Saccharomyces cerevisiae cell wall, extracted

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 06 December 2011 to 22 December 2011

Reliability:

1 (reliable without restriction)

Qualifier:

according to guideline

Guideline:

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

Version / remarks:

Reg. 440/2008

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Relative self-ignition temperature:

219 °C

Remarks on result:

other: In the first assay, the self-ignition temperature was observed at 220°C and in the second assay, the self-ignition temperature was observed at 218°C. The result is the mean value of two assays.

Assay 1 :

Duration 795.5 min.

Rate : 0.51°C/min.

At the start of the test, the test was a beige powder and at the end of the test, the cube was half-full and the test item was blackened.

Exothermic reaction :

Duration : 80 min,

Maximal temperature : 439.7°C

Oven temperature along the reaction : min. 204.2°C and mx 244.8°C

Self-ignition temperature 220°C

Assay 2 :

Duration 792 min.

Rate : 0.51°C/min.

At the start of the test, the test was a beige powder and at the end of the test, the cube was half-full and the test item was blackened.

Exothermic reaction :

Duration : 78.5 min,

Maximal temperature : 441.9°C

Oven temperature along the reaction : min. 206.1°C and mx 248.3°C

Self-ignition temperature 218°C

Conclusions:

The mean self-ignition temperature is 219°C

Executive summary:

The test item was tested for its self-ignition temperature according to the EC A.16 method and following the GLP.

The cube was filled with the test item to be tested and was tapped gently adding more of the test item until the cube was completely full. The sample was then suspended in the center of the oven at room temperature.

One thermocouple was placed at the center of the cube and the other between the cube and the oven wall to record the oven temperature.

The temperatures of the oven and sample were continuously recorded while the temperature of the oven increases up to 420°C or to the melting point of the solid, if lower, at a rate of 0.5°C/min.

The test was performed twice. In both assays, the test item was a beige powder at the start of the test and blackened at the end of the test.

An exothermic reaction was registered at 218°C and 220°C respectively.

So the mean self-ignition temperature of the test item is 219°C.

Description of key information

The mean self-ignition temperature on the substance "Saccharomyces cerevisiae cell wall, extracted" is 219°C

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

219 °C

Additional information

The test item was tested for its self-ignition temperature according to the EC A.16 method and following the GLP.

The cube was filled with the test item to be tested and was tapped gently adding more of the test item until the cube was completely full. The sample was then suspended in the center of the oven at room temperature.

One thermocouple was placed at the center of the cube and the other between the cube and the oven wall to record the oven temperature.

The temperatures of the oven and sample were continuously recorded while the temperature of the oven increases up to 420°C or to the melting point of the solid, if lower, at a rate of 0.5°C/min.

The test was performed twice. In both assays, the test item was a beige powder at the start of the test and blackened at the end of the test.

An exothermic reaction was registered at 218°C and 220°C respectively.

So the mean self-ignition temperature of the test item is 219°C.