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:
25Oct2018 to 25Mar2019
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2019
Report Date:
2019

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid
Details on test material:
Batch 1075126
Specific details on test material used for the study:
Identification: 2-[(4-aminophenyl)azo]-1,3-dimethyl-1Himidazolium chloride
Batch (Lot) Number: 1075126
Expiry date: 24 July 2022 (expiry date)
Physical Description: Brown powder

Results and discussion

Flammable solids
Key result
Test procedure:
burning rate test: preliminary screening test
Burning time:
6 s
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 preliminary screening test was performed for the determination of the flammability of 2-[(4-aminophenyl)azo]-1,3-dimethyl-1H-imidazolium chloride.

No propagation of combustion of the test item along 200 mm length of the pile within 2 minutes 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 flammable’.
Executive summary:

The preliminary screening test was performed for the determination of the flammability of the test item.

The test item was loosely filled into an 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 noncombustible 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.

The flame of the gas burner did ignite the test item pile. The test item swelled, burned with an orange flame and turned into a black residue. Grey smoke was observed. After removal of the ignition source, the flame extinguished after 6 seconds and no propagation of combustion was observed.

The preliminary screening test was performed for the determination of the flammability of 2-[(4-aminophenyl)azo]-1,3-dimethyl-1H-imidazolium chloride.

No propagation of combustion of the test item along 200 mm length of the pile within 2 minutes 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 flammable’.