4-methylmorpholine 4-oxide, monohydrate

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2012-02-07

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:

reference mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

1.5 other: mm/s (migrated information)

Remarks on result:

other: Max burning mixture: 70% barium nitrate. The 90% concentration of barium nitrate/cellulose did not burn along the sample.

Key result

Sample tested:

test mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

2.5 other: mm/s (migrated information)

Remarks on result:

other: Max burning mixture: 40% test substance. On 90% concentration of test substance/cellulose a flame shot across the sample in < 1 s.

Results of preliminary screening test:

- Reaction of reference sample: vigorous, 40 seconds of burning time, sample burnt with a medium green/blue flame

- Reaction of test sample: moderate, 162 seconds of burning time, sample burnt with a medium orange flame

The burning time of NMMO was greater than that of the reference sample in the preliminary screening test. Therefore it was necessary to complete the full train test.

Nine ratios were tested (containing 10 to 90% test substance). Tha ratio's with 10%, 20% and 90% had a burning rate of 1.0, 1.4 and 1.4 mm/s, respectively. All other ratio's showed a burning rate higher than the maximum burning rate of the reference mixture.

Interpretation of results:

other: oxidising: maximum burning rate equal or higher than reference mixture

Remarks:

Migrated information

Conclusions:

Under the conditions of the test, NMMO was observed to be oxidising.

Executive summary:

Oxidising properties of the test item were determined according to EU Method A.17. Under the conditions of the test, NMMO was observed to be oxidising.

Description of key information

From a GLP study in accordance with the EC A.17 test method, NMMO was concluded to have oxidising properties (Younis, 2012). 

Key value for chemical safety assessment

Oxidising properties:

oxidising

Justification for classification or non-classification

From a GLP study in accordance with the EC A.17 test method, NMMO was concluded to have oxidising properties (Younis, 2012).

CLP: in general, substances that are classified as oxidising solids according to DSD will also meet the criteria for GHS classification according to CLP. However, assignment of a hazard category is not possible based on the EC A.17 test. As NMMO has no exposive properties, category 1 is anticipated to result in over-classification. Therefore, it is proposed to classify NMMO as a category 2 oxidising solid with hazard statement H272: May intensify fire; oxidiser.