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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:
10 April 2017 to 08 May 2017
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
Guideline:
EU Method A.10 (Flammability (Solids))
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:
other: VDI 2263: "Test Methods for the Determination of the Safety Characteristic of Dusts"; May 1990.
Principles of method if other than guideline:
a pre-liminary screening test was performed
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
2-(2-chlorophenyl)-1-[2-(2-chlorophenyl)-4,5-diphenyl-2H-imidazol-2-yl]-4,5-diphenyl-1H-imidazole
EC Number:
230-555-6
EC Name:
2-(2-chlorophenyl)-1-[2-(2-chlorophenyl)-4,5-diphenyl-2H-imidazol-2-yl]-4,5-diphenyl-1H-imidazole
Cas Number:
7189-82-4
Molecular formula:
C42H28Cl2N4
IUPAC Name:
2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenyl-2'H-1,2'-biimidazole
Test material form:
solid: crystalline
Details on test material:
Appearance: Yellow crystalline powder
Test item storage: At room temperature
Stable under storage conditions until: 01 February 2018 (expiry date)

Results and discussion

Flammable solids
Key result
Test procedure:
burning rate test: preliminary screening test
Burning time:
0 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
Remarks:
During flame contact the substance melted, emitted yellow sparks and turned into a dark brown residue. Grey smoke was observed.

Applicant's summary and conclusion

Interpretation of results:
not classified based on GHS criteria
Conclusions:
The substance is non-flammable
Executive summary:

The preliminary screening test was performed for the determination of the flammability of the substance. No propagation of combustion of the substance along 200 mm length of the pile within 4 minutes was observed. According to the guidelines, performance of the burning rate test is not required. Based on the results obtained, the substance is considered ‘not highly flammable’.