Registration Dossier

Administrative data

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
Cross-reference
Reason / purpose:
reference to same study
Reference
Endpoint:
relative self-ignition temperature (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:
reference to same study
Qualifier:
according to
Guideline:
other: Directive VDI 2263, Part 1
Relative self-ignition temperature:
>= 140 °C
Remarks on result:
other: result refers to the pure test substance
Relative self-ignition temperature:
>= 160 °C
Remarks on result:
other: result refers to the kieselgur mixture (1:1)

In the screening test according to Grewer with the pure product an endothermal effect was observed in the temperature range 40 - 140°C. At 140°C the beginning of self-heating was recorded. A multistage reaction was observed which led to a maximum temperature of more than 450 °C.

In the screening test with the kieselguhr mixture 81:19 self-heatiing was detected starting at 160°C. A multistage reaction was observed which led to a maximum product temperature of more than 500°C.

Conclusions:
Due to the results from the Grewer-Oven screening test further studies are necessary to exclude or classify the substance as self-heating substance according to Regulation (EC) No 1272/2008.

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:
other: Directive VDI 2263, Part 1, burning index
Qualifier:
according to
Guideline:
UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)
Version / remarks:
burning rate

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Flammable solidsopen allclose all
Key result
Test procedure:
other: burning index according to VDI 2263
Remarks on result:
other: burning index BZ 4
Remarks:
glowing without sparks (smoldering) or slow decomposition without flame
Test procedure:
burning rate test: preliminary screening test
Burning time:
ca. 63 min
Remarks on result:
other: derived based on burning time for 50 mm

Any other information on results incl. tables

The product showed a smouldering fire when an ignition source (flame or hot wire) was applied at ambient temperature. A propagation of the combustion was observed. The product did not melt.

The combustion behaviour of the product at ambient temperature is characterized by the burning index BZ 4 (glowing without sparks (smoldering) or slow decompostion without flame).

Due to the fact that a propagation of the combustion was observed the burning rate had to be determined.

Due to the low burning rate the test was stopped after 15.75 min/50 mm. Derived burning time for a distance of 200 mm: 63 min. The burning time was far above the limit of 2 min for 200 mm. Therfore, the main test to determine the burning rate did not have to be performed.

Applicant's summary and conclusion

Interpretation of results:
not classified based on GHS criteria
Conclusions:
Combustion Number (BZ) 4 was determined. The burning time was far above the limit of 2 min for 200 mm.
Therefore, the substance has not to be classified as flammable solid according to Regulation (EC) No 1272/2008.