Registration Dossier

Administrative data

Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: According to Regulation (EC) No 440/2008, A.17.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report Date:
2016

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
EU Method A.17 (Oxidising Properties (Solids))

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Contact with:
powdered cellulose
Duration of test (contact time):
>= 13 - <= 135 s

Results and discussion

Test results (Oxidising solids)open allclose all
Sample tested:
test mixture (not specified)
Remarks:
migrated information
Parameter:
maximum burning rate
Result:
0.27 other: mm/s (migrated information)
Remarks on result:
other: 10 % test item mixture
Sample tested:
reference mixture (not specified)
Remarks:
migrated information
Parameter:
maximum burning rate
Result:
1.74 other: mm/s (migrated information)
Remarks on result:
other: barium nitrate content 60 %

Any other information on results incl. tables

Grinding, sieving and drying of the test item, barium nitrate and cellulose

The cellulose was dried by treating the sample at 105 °C +/- 5 °C until the weight was constant. Due to the particle size of the cellulose grinding and sieving was not necessary.

The barium nitrate was ground, sieved < 0.12 mm and dried by treating the sample at 105 °C +/- 5 °C until the weight was constant.

The test item was dried by treating the sample at 50 °C +/- 5 °C under vacuum until the weight was

constant. The test item was not ground and sieved; the test item was < 0.12 mm.

Preliminary test

Three test mixtures with the test item and cellulose 2:1 did not burn with a flame. Only smouldering fires were observed for >600 s. Three test mixtures with barium nitrate/cellulose 2:1 burned down completely in 60 s, 54 s and 61 s, respectively. Due to the results of the preliminary test the main test had to be performed.

Main test

Four tests were performed for the reference mixture (barium nitrate and cellulose) with 50, 55, 60 and 70 wt. % oxidizer (barium nitrate). The results are shown in Table 1:

Table 1

Barium nitrate [ wt. %]

Burning time over 200 mm [s]

Burning rate [mm/s]

50

138

1.45

55

132

1.52

60

115

1.74

70

174

1.15

The highest burning rate of 1.74 mm/s was found for the mixture with 60 wt. % oxidizer.

Applicant's summary and conclusion

Interpretation of results:
other: no oxidising properties
Remarks:
Migrated information
Conclusions:
The mixture of the test item with cellulose showed a lower burning rate than the reference mixture. Therefore, the test item has not to be classified according to Regulation (EC) No 1272/2008.