Registration Dossier

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:
2017-01-13 - 2017-04-04 (experimental)
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2017

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
EU Method A.10 (Flammability (Solids))
Version / remarks:
May 31, 2008
Deviations:
no
Qualifier:
according to
Guideline:
UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)
Version / remarks:
United Nations (UN), UN no. ST/SG/AC.10/11/Rev.6: Recommendations on the Transport of Dangerous Goods, Part III: Classification Procedures, Test Methods and Criteria Relating to Class 2, Class 3, Class 4, Division 5.1, Class 8 and Class 9, Test N.1: “Test Method for Readily Combustible Solids”, 2015
Deviations:
no
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/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
Remarks:
The flame of the gas burner did ignite the test item pile. The test item burned with a yellow flame, emitted yellow sparks, melted and turned into a brown/black residue. White smoke was observed. After removal of the ignition source, the flame extinguished after 1 second and no propagation of combustion was observed.

Applicant's summary and conclusion

Interpretation of results:
not classified based on GHS criteria
Conclusions:
The GLP study was performed according to EU method A.10 and UN N.1 without deviations and therefore reliability of Klimisch 1 has been assigned. No propagation of combustion of the test item was observed during the preliminary screening test and hence, a full test is not necessary and the substance can be considered as not highly flammable.
Executive summary:

The Flammability potential of the test substance was assessed in a GLP test according to EU method A.10 and UN-MTC procedure Test N.1 ‘Test method for readily combustible solids’. A preliminary screening test was performed to determine if propagation by burning with flame or smoldering occurs without wetted zone. The substance was loosely filled into a aluminium mould of 250 mm long with a triangular cross-section of inner height of 10 mm and width of 20 mm. On both sides of the mould in a longitudinal direction two metal plates were mounted as lateral limitations that project 2 mm beyond the upper edge of the triangular cross section. The mould was dropped three times from a height of 2 cm onto a solid surface. If necessary, the mould was filled up again. The lateral limitations were removed and the excess substance was scraped off. A non-combustible and non-porous plate was placed on top of the mould. The complete assembly was inverted and the mould removed. A flame of a gas burner was applied to one end of the test item pile until the test item ignited. The pile was visually interpreted for propagation of combustion either by burning with a flame or smouldering. If applicable, the time of burning over a distance of 200 mm was measured after the pile had burned a distance of 50 mm. If the test item does not propagate combustion along 200 mm of the pile within the 4 minutes test period the test item is considered ‘not highly flammable’.

The flame of the gas burner did ignite the test item pile. The test item burned with a yellow flame, emitted yellow sparks, melted and turned into a brown/black residue. White smoke was observed. After removal of the ignition source, the flame extinguished after 1 second and no propagation of combustion was observed. According to the guidelines, performance of the burning rate test is not required. Based on the results obtained, the test item is considered ‘not highly flammable’.