Sodium 3-morpholin-4-ylpropane-1-sulfonate

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 2020-10-01 to 2020-10-27

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: VDI 2263 Sheet 1 Grewer Oven

Version / remarks:

1990

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Relative self-ignition temperature:

ca. 230 °C

ln the investigation of self-ignition in the Grewer Oven for the pure test item first a small endothermic effect could be observed at a temperature of 40 °C and a second endothermic effect at approx. 220 °C which results into an exothermic effect starting at approx. 230 °C. This effect leads to a temperature increase up to 260 °C (corresponding temperature of the reference material 244 °C). A black residue remained in the wire basket after the test.

For the test item in mixture with Kieselguhr a weak endothermic effect could be observed starting at a temperature of approx. 40 °C and an exothermic effect starting at a temperature of approx. 220 °C which led to a temperature increase up to 650 °C (corresponding temperature of the reference material 238 °C). A grey residue remained in the wire basket after the test.

The table below summarizes the results of the Grewer Oven experiment.

Experiment	Onset self- ignition / °C	Maximum temperature / °C
Pure test item	approx. 230	260
Test item in mixture with Kieselguhr (1:1)	approx. 220	650

 

The pure test item indicated a self-ignition at atmospheric pressure starting at a temperature of approx. 230 °C.

Conclusions:

The test item indicated self-ignition at atmospheric pressure starting at a temperature of approx. 230 °C.

Executive summary:

A study was conducted to determine the self-ignition of the test item according to VDI 2263 Sheet 1 Grewer Oven (1990). First a small endothermic effect could be observed at a temperature of 40 °C and a second endothermic effect at approx. 220 °C which results into an exothermic effect starting at approx. 230 °C.

Description of key information

The test item indicated self-ignition at atmospheric pressure starting at a temperature of approx. 230 °C (reference 4.12-1).

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

230 °C

Additional information

A study was conducted to determine the self-ignition of the test item according to VDI 2263 Sheet 1 Grewer Oven (1990). First a small endothermic effect could be observed at a temperature of 40 °C and a second endothermic effect at approx. 220 °C which results into an exothermic effect starting at approx. 230 °C.