Iron titanium trioxide

Oxidising properties

Administrative data

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

27 Sep - 02 Oct 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.17 (Oxidising Properties (Solids))

Deviations:

no

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

Iron titanium trioxide

EC Number:

234-667-6

EC Name:

Iron titanium trioxide

Cas Number:

12022-71-8

Molecular formula:

FeO3Ti

IUPAC Name:

4-oxo-1,3-dioxa-2-ferra-4-titanacyclobutane

Test material form:

solid

Study design

Contact with:

powdered cellulose

Duration of test (contact time):

>= 55 - <= 60 s

Results and discussion

Test results (Oxidising solids)

Test results (Oxidising solids) 1

Sample tested:

reference mixture as specified

Parameter:

burning rate

Result:

1.64 mm/s

Test results (Oxidising solids) 2

Key result

Sample tested:

test mixture as specified

Parameter:

burning rate

Result:

0.78 mm/s

Any other information on results incl. tables

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

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

Preliminary test

Three test mixtures with the test item and cellulose 2:1 smoldered at the surface lor 123 s, 193 s and 159 s, respectively.

Three test mixtures with barium nitrate/cellulose 2:1 burned down completely in 63 s, 59 s and 58 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 highest burning rate of 1.64 mm/s was found for the mixture with 60 wt. % oxidizer. Mixtures of the test item with cellulose were prepared in between 10 and 90wt. % of the test item and tested.

Due to the fact that the maximum burning rate of the mixtures of the test item with cellulose is lower than the maximum burning rate of the reference mixture, six tests were performed only with the three mixtures (10, 20 and 30 wt.% of the test item) with the highest burning rates to verify these values.

Each mixture was measured 6 times. The mean burning rate for the mixture with the highest burning rate (10 %) was 0.74 mm/s. The difference between the mean burning rate and the maximum burning rate was <10% for this mixture.

The maximum burning rate of the mixtures of the test item and cellulose (0.78 mm/s) was lower than the maximum burning rate of the reference mixture of cellulose and barium nitrate (1.64 mm/s). Due to the fact that the mixture of the test item with cellulose burned slower compared to the reference mixture it was concluded that the test item has no oxidizing properties.

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

The test item had no oxidizing properties in the sense of the European Commission Regulation (EC) No. 440/2008, Method A.17.