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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
31Oct2017 - 09Jan2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
Deviations:
no
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
3,7-dihydropurin-6-one;sodium
Cas Number:
45738-97-4
Molecular formula:
C5H3N4NaO
IUPAC Name:
3,7-dihydropurin-6-one;sodium
Test material form:
solid: particulate/powder
Details on test material:
- Appearance: White powder
- Purity / Composition: 98%
- Test item storage: Room temperature
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Batch No.of test material: 16K235305
- Purity: 98.0%

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: At room temperature

Results and discussion

Relative self-ignition temperature (solids)
Key result
Relative self-ignition temperature:
> 545 °C
Remarks on result:
no self ignition observed under the test conditions

Applicant's summary and conclusion

Conclusions:
Based on the results obtained the test item is considered ‘not self-ignitable’.
Executive summary:

The self-ignition temperature of Sodium hypoxanthine was determined using a temperature programmed laboratory oven, a stainless steel wire mesh cube, NiCr/NiAl thermocouples and a temperature recording device. An exothermic effect of the test item by self-heating was observed at an oven temperature of 417°C.  During this effect the test item reached a temperature of 545°C. According to the guideline, a test item is self-ignitable when the sample temperature reaches 400°C by self-heating.  Based on this the test item is considered ‘not self-ignitable’. After the experiment, the test item had turned into a charred residue and was partially collected in a container that was placed below the cube.  It indicated that the test item had been molten, decomposed and/or reacted during the experiment.