Triammonium citrate

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:

2019-06-17 to 2019-08-13

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: UN Recommendations on the TRANSPORT OF DANGEROUS GOODS: Manual of Tests and Criteria, Rev. 6 (2015) and UN-Model Regulations, Rev. 20 (2017)

Version / remarks:

2015/2017

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: VDI 2263 Sheet 1 Grewer oven (1990)

Version / remarks:

1990

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Remarks on result:

no self ignition observed under the test conditions

In the investigation of self-ignition in the Grewer oven for the pure test item an endothermic process was detected starting at a temperature of approx. 110 °C, which can be assigned to a partially melting of the test item. No further thermal effects could be observed up to the maximum test temperature of 408 °C. After the measurement a black residue remained in the wire basket.

For the test item in mixture with Kieselguhr an endothermic process was detected starting at a temperature of approx. 150 °C. Starting at a temperature of approx. 270 °C an exothermic effect was observed that led to a maximum temperature of approx. 440 °C (corresponding oven temperature 380°C). After the measurement a grey residue remained in the wire basket.

Conclusions:

In the present study conducted according to VDI 2263, sheet 1, the self ignition of the test item was investigated using the Grewer oven. The pure test item Triammonium citrate indicated no self-heating at atmospheric pressure up to the maximum test temperature of 408 °C. On the basis to the results of the tests on the self-ignition in the Grewer oven the test item is classified as follows:
UN Transport Regulation: The test item does not have to be classified as self-heating substance in class 4, division 4.2 according to the UN Transport Regulation.
GHS I CLP Regulation EC 1272/2008 Annex 1: 2.11: The test item does not have to be classified as self-heating substance according to GHS/CLP Regulation EC 1272/2008 Annex 1: 2.11, respectively.

Executive summary:

In the present study conducted according to VDI 2263, sheet 1, the self ignition of the test item was investigated using the Grewer oven. The pure test item Triammonium citrate indicated no self-heating at atmospheric pressure up to the maximum test temperature of 408 °C. On the basis to the results of the tests on the self-ignition in the Grewer oven the test item is classified as follows:

UN Transport Regulation: The test item does not have to be classified as self-heating substance in class 4, division 4.2 according to the UN Transport Regulation.

GHS I CLP Regulation EC 1272/2008 Annex 1: 2.11: The test item does not have to be classified as self-heating substance according to GHS/CLP Regulation EC 1272/2008 Annex 1: 2.11, respectively.

Description of key information

Study conducted according to VDI 2263, sheet 1, the self ignition of the test item was investigated using the Grewer oven. The pure test item Triammonium citrate indicated no self-heating at atmospheric pressure up to the maximum test temperature of 408 °C.