Reaction mass of Ammonium bisethanedioato bisaquo niobate(V) (anhydrous form) and Ammonium hydrogen ethanedioate ethanedioic acid (anhydrous form)

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising properties

Type of information:

experimental study

Adequacy of study:

key study

Study period:

03 - 07 Sept 2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP -guideline study

Qualifier:

according to guideline

Guideline:

other: UN-Test O.1

GLP compliance:

yes (incl. QA statement)

Remarks:

Hessisches Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany

Contact with:

powdered cellulose

Sample tested:

test mixture (not specified)

Remarks:

migrated information

Parameter:

mean pressure rise time

Result:

180 s

Remarks on result:

other: mixture of test item with cellulose (1:1) - The mixture showed only a smouldering and some flame in contact with the ignition wire. The smouldering after a total time of 6 – 8 minutes. The pile did not smoulder completely stopped.

Sample tested:

test mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

s

Remarks on result:

other: mixture of the test item with cellulose (4:1) - The mixture showed no burning effect. Only a smouldering in contact with the ignition wire was observed. This effect stopped immediately after the power supply was switched off.

Sample tested:

reference mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

119 s

Mixture	Test 1 t/s	Test 2 t/s	Test 3 t/s	Test 4 t/s	Test 5 t/s	Mean burning time / s
test item/cellulose 4:1	The mixture showed no burning effect. Only a smouldering in contact with the ignition wire was observed. This effect stopped immediately after the power supply was switched off.
test item/cellulose 1:1	> 180 The mixture showed only a smouldering and some flame in contact with the ignition wire. The smouldering after a total time of 6 – 8 minutes. The pile did not smoulder completely stopped
potassium bromate/cellulose 3:7	115	109	161*	121	130	119

* pile was opened during the test in order to check the reaction. Therefore this value is higher as in the middle of the pile the reaction can continue even when the surface reaction is finished. Due to this effect this value has not been used for the determination of the mean burning time.

The mean burning time of the mixture of the test item/cellulose 4:1 could not be determined. The mixture showed no burning and therefore no oxidizing effect.

The mean burning time of the mixture of the test item/cellulose 1:1 is 360 s (conservative approach, taking into account the smouldering process of the mixture).

Due to the fact that the mixture of the test item with cellulose (4:1) did not burn at all and the mixture of the test item with cellulose (1:1) has a higher mean burning time compared to the reference mixture int the ration 3:7, it is concluded that the test item has no oxidizing properties.

Description of key information

non oxidising solid  (UN RTDG O.1)

Key value for chemical safety assessment

Oxidising properties:

no

Additional information

The oxidising properties of the test item were determined by UN RTDG Test O.1.

Justification for classification or non-classification

The available data on oxidising properties of the test substance do not meet the criteria for classification according to Regulation (EC) 1272/2008 and are therefore conclusive but not sufficient for classification: The maximum burning rate of the test mixture was less than that of the reference mixture (3:7 potassium bromate and cellulose) in a test according to UN RTDG Test O.1.