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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Flammability

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Administrative data

Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
21/12/2017
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 guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)
Qualifier:
according to guideline
Guideline:
EU Method A.10 (Flammability (Solids))
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
Trizirconium monoxide
Molecular formula:
Zr3O
IUPAC Name:
Trizirconium monoxide
Constituent 2
Chemical structure
Reference substance name:
Zirconium dioxide
EC Number:
215-227-2
EC Name:
Zirconium dioxide
Cas Number:
1314-23-4
Molecular formula:
O2Zr
IUPAC Name:
Zirconium dioxide
impurity 1
Chemical structure
Reference substance name:
Hafnium
EC Number:
231-166-4
EC Name:
Hafnium
Cas Number:
7440-58-6
Molecular formula:
Hf
IUPAC Name:
Hafnium
Test material form:
solid: bulk
Specific details on test material used for the study:
batch number: C000344287
appearance: dark grey powder

Results and discussion

Flammable solids
Key result
Test procedure:
burning rate test: preliminary screening test
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:
not classified based on GHS criteria
Conclusions:
The test item is classified as follows:
UN Transport Regulation: the product has not to be clasified as readily combustible solid in class 4.1 according to the UN Transport Regulation.
GHS: the product has not to be classified as flammable solid according to GHS/CLP Regulation EC 1272/2008 Annex 1: 2.7.
Executive summary:

The test item ZrO could not be ignited applying a flame as ignition source for at least 2 minutes. The test item is classified as follows:

UN Transport Regulation: the product has not to be clasified as readily combustible solid in class 4.1 according to the UN Transport Regulation.

GHS: the product has not to be classified as flammable solid according to GHS/CLP Regulation EC 1272/2008 Annex 1: 2.7.