1,2-Benzisothiazole, 3-methyl-, 1,1-dioxide

Oxidising properties

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

oxidising gases

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the substance is a solid

Reference 2

Endpoint:

oxidising liquids

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the substance is a solid

Reference 3

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-01-24 to 2017-01-26

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test O.1 (Test for oxidizing solids)

Version / remarks:

2015

Deviations:

yes

Remarks:

The mass of the mixtures was 40.0 g ± 0.1 g as the 30 g of mixtures from the guideline were not enough for filling the funnel. This deviation is not considered to have affected the integrity and validity of the study.

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

- Lot: 216-106
- Expiry date: 2018-06-16
- Storage conditions: Keep at room temperature

Contact with:

powdered cellulose

Key result

Sample tested:

4:1 sample-to-cellulose ratio

Parameter:

mean burning time

Result:

325 s

Key result

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

mean burning time

Result:

922 s

Sample tested:

reference: 3:7 mixture potassium bromate + cellulose

Parameter:

mean burning time

Result:

177 s

Sample tested:

reference: 2:3 mixture potassium bromate + cellulose

Parameter:

mean burning time

Result:

70 s

Sample tested:

reference: 3:2 mixture potassium bromate + cellulose

Parameter:

mean burning time

Result:

38 s

Interpretation of results:

GHS criteria not met

Conclusions:

The mean burning times of both the 4:1 (325 s) and 1:1 (922 s) sample-to-cellulose ratio mixtures were greater than that of a 3:7 (177 s) mixture of potassium bromate and cellulose. Therefore the test substance is not oxidising.

Executive summary:

Using a test according to UN O.1 the oxidizing properties of the test item were evaluated. Therefore mixtures of the test item and cellulose were prepared in the oxidizer to cellulose ratios of 4:1 and 1:1, by mass. The mixtures were formed into a truncated conical pile, with a base diameter of 70 mm, covering the looped ignition wire resting on the reaction plate. Power was applied to the ignition wire and was maintained for the duration of the test. The burning time from when the power was switched on to when the main reaction ended was recorded. Intermittent reaction, such as sparking or sputtering, after the main reaction was not taken into account. The test was performed five times with each mixture at 20 ± 5 °C. The mean burning times of both the 4:1 and 1:1 sample-to-cellulose ratio (by mass) mixtures were greater than that of a 3:7 mixture (by mass) of potassium bromate and cellulose. Based on the results of the test the test item is not classified.

Description of key information

The mean burning times of both the 4:1 (325 s) and 1:1 (922 s) sample-to-cellulose ratio mixtures were greater than that of a 3:7 (177 s) mixture of potassium bromate and cellulose. Therefore the test substance is not oxidising. 

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

Oxidising liquids /gases

The study does not need to be conducted because the substance is a solid.

Oxidising solids

Using a test according to UN O.1 the oxidizing properties of the test item were evaluated. Therefore mixtures of the test item and cellulose were prepared in the oxidizer to cellulose ratios of 4:1 and 1:1, by mass. The mixtures were formed into a truncated conical pile, with a base diameter of 70 mm, covering the looped ignition wire resting on the reaction plate. Power was applied to the ignition wire and was maintained for the duration of the test. The burning time from when the power was switched on to when the main reaction ended was recorded. Intermittent reaction, such as sparking or sputtering, after the main reaction was not taken into account. The test was performed five times with each mixture at 20 ± 5 °C. The mean burning times of both the 4:1 and 1:1 sample-to-cellulose ratio (by mass) mixtures were greater than that of a 3:7 mixture (by mass) of potassium bromate and cellulose. Based on the results of the test the test item is not classified.

Justification for classification or non-classification

Classification, Labelling, and Packaging Regulation (EC) No 1272/2008

Based on available data on oxidising properties, the test item is not classified according to Regulation (EC) No 1272/2008 (CLP), as amended for the ninth time in Regulation (EU) No 2016/1179.