Manganese oxide

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

30/06/09 - 01/07/09

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Conducted to current accepted guidelines.

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

GLP compliance:

no

Sample tested:

test mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

0.794 other: mm/s (migrated information)

Remarks on result:

other: Fastest mixture, test material: cellulose, 10:90

Sample tested:

test mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

0.667 other: mm/s (migrated information)

Remarks on result:

other: Second fastest mixture, test material: cellulose, 20:80

Sample tested:

test mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

0.525 other: mm/s (migrated information)

Remarks on result:

other: Third fastest mixture, test material: cellulose, 30:70

Sample tested:

reference mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

1.235 other: mm/s (migrated information)

Table 1: Reference mixtures

 

% Barium Nitrate	Observations	Burning Time (s)	Burning Rate (mm/s)
10	The pile burned with a steady orange flame which left dark grey ash.	268	0.746
20	The pile burned with a steady orange flame which left dark grey ash.	248	0.806
30	The pile burned with a steady orange flame which left dark grey ash.	217	0.922
40	The pile burned with a steady orange flame which left dark grey ash.	231	0.866
50	The pile burned with a steady orange flame which left dark grey ash.	179	1.117
60	The pile burned with a steady orange flame which left dark grey ash.	165	1.212
70	The pile burned with a paler/larger flame which left pale grey ash.	162	1.235
80	The pile burnt as the 70/30 mixture but a smaller flame and left pale grey ash.	257	0.778
90	The pile failed to ignite	-	-
Maximum burning rate = 1.235 mm/s

 

Table 2: Cellulose mixtures

 

% Barium Nitrate	Observations	Burning Time (s)	Burning Rate (mm/s)
10	The pile burnt with a small pale blue flame which emitted pale grey smoke and left black ash.	264	0.758
20	The pile burnt with a small pale blue flame which emitted pale grey smoke and left black ash.	284	0.704
30	The pile burnt with a small pale blue flame which emitted pale grey smoke and left black ash.	541	0.370
40	The pile burnt with a small pale blue flame which self extinguished and then smouldered across the pile.	3393	0.059
50	The pile burnt with a small pale blue flame which self extinguished and then smouldered across the pile.	2778	0.072
60	The pile burnt with a small pale blue flame which self extinguished and then smouldered across the pile.	2789	0.072
70	The pile burnt with a small pale blue flame which self extinguished and then smouldered across the pile.	2707	0.074
80	No flame evident only propagation by smouldering.	2382	0.084
90	Glowing embers that self-extinguished without propagating combustion.	-	-
Maximum burning rate = 0.758 mm/s Maximum burning rate reference mixtures = 1.235 mm/s

 

Table 3: Fastest Burning Rate Mixture, Test Material: Cellulose Ratio = 10:90

 

Test	Observations	Burning Time (s)	Burning Rate (mm/s)
1	The pile burnt with a steady blue flame which emitted grey smoke and left dark grey ash.	298	0.671
2	The pile burnt with a steady blue flame which emitted grey smoke and left dark grey ash.	291	0.687
3	The pile burnt with a steady blue flame which emitted grey smoke and left dark grey ash.	273	0.733
4	The pile burnt with a steady blue flame which emitted grey smoke and left dark grey ash.	252	0.794
5	The pile burnt with a steady blue flame which emitted grey smoke and left dark grey ash.	306	0.654
6	The pile burnt with a steady blue flame which emitted grey smoke and left dark grey ash.	301	0.664
Maximum burning rate = 0.794 mm/s Maximum burning rate of reference mixtures = 1.235 mm/s

 

Table 4: Second Fastest Burning Rate Mixture, Test Material: Cellulose Ratio = 20:80

 

Test	Observations	Burning Time (s)	Burning Rate (mm/s)
1	The pile burnt with a small pale blue flame which emitted grey smoke and left dark grey ash.	300	0.667
2	The pile burnt with a small pale blue flame which self- extinguished after approximately 18 cm and continued to propagate across the pile by smouldering.	965	0.207
3	The pile burnt with a small pale blue flame which emitted grey smoke and left dark grey ash.	340	0.588
4	The pile burnt with an orange/blue blue flame which produced grey smoke and left dark black charred remains.	352	0.568
5	The pile burnt with an orange/blue blue flame which produced grey smoke and left dark black charred remains.	321	0.623
6	The pile burnt with an orange/blue blue flame which produced grey smoke and left dark black charred remains.	339	0.590
Maximum burning rate = 0.667 mm/s Maximum burning rate of reference mixtures = 1.235 mm/s

 

Table 5: Third Fastest Burning Rate Mixture, Test Material: Cellulose Ratio 30:70

 

Test	Observations	Burning Time (s)	Burning Rate (mm/s)
1	The pile burned with an orange/blue flame which produced grey smoke. The flame self-extinguished after burning for 228 seconds and smouldered across the remaining length of the pile.	2501	0.080
2	The pile burned with an orange/blue flame which produced grey smoke. The flame self-extinguished after burning for 363 seconds and smouldered across the remaining length of the pile.	697	0.287
3	The pile burnt with an orange/blue flame which produced grey smoke and left black charred remains.	381	0.525
4	The pile burned with an orange/blue flame which produced grey smoke. The flame self-extinguished after burning for 319 seconds and smouldered across the remaining length of the pile.	1396	0.143
5	The pile burned with an orange/blue flame which produced grey smoke. The flame self-extinguished after burning for 155 seconds and smouldered across the remaining length of the pile.	3305	0.061
6	The pile burned with an orange/blue flame which produced grey smoke. The flame self-extinguished after burning for 130 seconds and smouldered across the remaining length of the pile.	3785	0.053
Maximum burning rate = 0.525 mm/s Maximum burning rate of reference mixtures = 1.235 mm/s

Interpretation of results:

other: no oxidising properties

Conclusions:

MnO has been determined not to have oxidising properties as the test material/cellulose mixtures failed to propagate combustion at a rate greater than or equal to that of the barium nitrate/cellulose mixtures.

Executive summary:

This was chosen as Key study as it is the only available study which is of relevance and of sufficient quality for classification and labelling and for risk assessment.

 

The study report includes the entire information requirement as appropriate for EU Method A.17 (Oxidising Properties (Solids)) guideline. Therefore the quality criteria of the study have been fulfilled as the study was conducted to guideline.

 

Lack of any observed effect in the study supports the lack of classification and labelling of this substance.

Description of key information

MnO has been determined not to have oxidising properties

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

MnO has been determined not to have oxidising properties as the test material/cellulose mixtures failed to propagate combustion at a rate greater than or equal to that of the barium nitrate/cellulose mixtures.