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Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-06-27 to 2018-08-02
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 up to the melting point

In  the  investigation  of  self-ignition  in  the  Grewer  Oven  the  pure  test  item  showed  two endothermic effects in the temperature ranges of 160 – 190 °C and 230 – 240 °C, whereby the  first  endothermic  effect  can  be  assigned  to  the  melting  of  the  test  item  (see  study 2018 -5114 -DGP).  No  further  thermal  effects  could  be  observed  up  to  the  maximum  test temperature of 412 °C. After the test the wire basket was empty.

Conclusions:
The pure test item TA-2 indicated no self-heating at atmospheric pressure up to its melting point starting at a temperature of approx. 160 °C. According to this result of the tests on the self-ignition in the Grewer Oven the test item is classified as follows:
The test item is not classified as self-heating substance in class 4, division 4.2 according to the UN Transport Regulation.
The test item is not classified as self-heating substance according to GHS/CLP Regulation EC 1272/2008 Annex 1: 2.11, respectively.

Description of key information

The pure test item TA-2 indicated no self-heating at atmospheric pressure up to its melting point starting at a temperature of approx. 160 °C.  According to this result of the tests on the self-ignition in the Grewer Oven the test item is classified as follows:

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

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

Key value for chemical safety assessment

Additional information