3,4-dihydro-2H-1,4-benzoxazin-6-ol

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 2020-02-13 to 2020-04-22

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Contact with:

powdered cellulose

Key result

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

maximum burning rate

Result:

1.14 mm/s

Main test:

Burning times and rates of reference mixtures: The highest burning rate of 1.56 mm/s was found for the mixture with 55 wt. % oxidizer.

Mixtures of the test item with cellulose were prepared in between 10 and 90 wt. % of the test item and tested.

Due to the fact that the maximum burning rate of the mixtures of the test item with cellulose was lower than the maximum burning rate of the reference mixture, six tests were performed only with the three mixtures (10, 40 and 50 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 (50 %) was 1.01 mm/s.

The difference between the mean burning rate and the maximum burning rate was <=13 % for this mixture. According to the guideline this value should be < 10 %. 27% of the test item had a particle size < 0.125 mm and 73% of the test item had a particle size < 0.125 mm, but further grinding of the test item was not possible. However, this deviation from the guideline was assumed to be uncritical, as the maximum burning rate of the mixtures of the test item and cellulose (1.14 mm/s) was significantly lower than the maximum burning rate of the reference mixture of cellulose and barium nitrate (1.56 mm/s).

Since the mixture of the test item with cellulose burned slower compared to the reference mixture it was concluded that the test item had no oxidizing properties.

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. 44012008, Method A.17.

Executive summary:

The aim of the test was to determine the oxidizing properties of the test item according to the A.17 method and following GLP. The test item had no oxidizing properties in the sense of the European Commission Regulation (EC) No. 440/2008, Method A.17.

Description of key information

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

Key value for chemical safety assessment

Oxidising properties:

non oxidising