Registration Dossier
Registration Dossier
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EC number: 221-656-6 | CAS number: 3179-31-5
Flammability
Administrative data
- Endpoint:
- flammable solids
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.10 (Flammability (Solids))
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 1,2,4-triazole-3-thiol
- EC Number:
- 221-656-6
- EC Name:
- 1,2,4-triazole-3-thiol
- Cas Number:
- 3179-31-5
- Molecular formula:
- C2H3N3S
- IUPAC Name:
- 4H-1,2,4-triazole-3-thiol
- Test material form:
- solid: crystalline
Constituent 1
Results and discussion
Flammable solids
- Key result
- Test procedure:
- burning time over 250 mm for metal powders or metal alloys
- Burning time:
- 0 min
- Remarks on result:
- substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- No ignition was observed throughout the course of the test. The test item 3-Mercapto-1,2,4-triazole should be considered as not highly flammable (for EU regulations) and as non-flammable solid (for UN regulations). No observations were made which might cause doubts concerning the validity of the study outcome.
- Executive summary:
First, a safety test was performed. A small amount of the test item was heated on a magnesia groove with a gas burner in order to derive safety precautions. The test item melted into a clear white liquid and discoloured into yellow-brown.
In the preliminary screening test following the EU and UN method, the test item was heated with the flame of a teclu burner. The test item melted into a yellow-brown liquid. No signs of an ignition were observed.
Therefore, the test item3-Mercapto-1,2,4-triazoleshould be considered as
not highly flammable (for EU regulations)
non-flammable solid (for UN regulations)
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