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Flammability

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Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Remarks:
VDI 2263, Part 1
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
other: Directive VDI 2263, Part 1, burning index
Test procedure:
other: burning index according to VDI 2263
Remarks on result:
other: burning index BZ 5
Remarks:
burning with flame or spark generation
Key result
Test procedure:
burning rate test: preliminary screening test
Burning time:
> 120 s

Propagation of combustion with a flame was observed when an ignition source (flame or hot wire, 2 min) was applied at ambient temperature. The product did not melt.

The combustion behaviour of the product at ambient temperature is characterized by the burning index BZ 5 (burning with flame or spark generation)

Due to the fact that propagation of the combustion was observed the burning rate need to be determined. In the preliminary test the flame extinguished after a distance of max. 2 cm reproducibly. Therefore, the main test need not to be conducted.

Interpretation of results:
not classified based on GHS criteria
Conclusions:
Combustion Number (BZ) 5 was determined, the burning rate was > 120 s.
Therefore, the substance has not to be classified as flammable solid according to Regulation (EC) No 1272/2008.
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Remarks:
VDI 2263, Part 1
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
other: Directive VDI 2263, Part 1, burning index
Test procedure:
other: burning index according to VDI 2263
Remarks on result:
other: burning index BZ 3
Remarks:
localized compustion or glowing with practically no spreading

Local burning without propagation of combustion was observed when an ignition source (flame or hot wire, 2 min) was applied at ambient temperature. The product did not melt.

The combustion behaviour of the product at ambient temperature is characterized by the burning index BZ 3 (localized compustion or glowing with practically no spreading). The same behaviour was recorded in the test conducted at 100°C.

Due to the fact that propagation of the combustion was not observed the burning rate did not need to be determined.

Interpretation of results:
not classified based on GHS criteria
Conclusions:
Combustion Number (BZ) 3 was determined.
Therefore, the substance has not to be classified as flammable solid according to Regulation (EC) No 1272/2008.

Description of key information

Key value for chemical safety assessment

Flammability:
not classified

Additional information

bulk form: burning rate > 120 s

nanoform: BZ 3, localized combustion with practically no spreading

Justification for classification or non-classification

The substances have not to be classified as flammable solids according to Regulation (EC) No 1272/2008.