Manganese ores, reduced

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

06/08/09 - 19/08/09

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:

no

Sample tested:

test mixture (not specified)

Parameter:

maximum burning rate

Result:

0.758 mm/s

Remarks on result:

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

Sample tested:

test mixture (not specified)

Parameter:

maximum burning rate

Result:

0.091 mm/s

Remarks on result:

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

Sample tested:

test mixture (not specified)

Parameter:

maximum burning rate

Result:

0.085 mm/s

Remarks on result:

other: Third fastest mixture, test material: cellulose, 60:40

Sample tested:

reference mixture (not specified)

Parameter:

maximum burning rate

Result:

1.351 mm/s

Table 1: Reference mixtures

 

% Barium Nitrate	Observations	Burning Time (s)	Burning Rate (mm/s)
10	The pile burned with an yellow/green flame which produced grey smoke and left black charred remains.	203	0.985
20	The pile burned with an   yellow/green flame which produced grey smoke and left black/grey charred remains.	195	1.026
30	The pile burned with an   yellow/green flame which produced grey smoke and left black/grey charred remains.	172	1.163
40	The pile burned with an green/ yellow flame which produced grey smoke and left black/grey charred remains.	141	1.418
50	The pile burned with an   green/ yellow flame which produced grey smoke and left black/grey charred remains.	148	1.351
60	The pile burned with an   green/ yellow flame which produced grey smoke and left black/grey charred remains.	101	1.980
70	The pile burned with an   green/ yellow flame which produced grey smoke and left whitish/grey charred remains.	95	2.105
80	The pile burned with an   green/ yellow flame which produced grey smoke and left white charred remains.	261	0.766
90	The pile failed to ignited	-	-
Maximum burning rate = 2.105 mm/s

 

Table 2: Cellulose mixtures

 

% Barium Nitrate	Observations	Burning Time (s)	Burning Rate (mm/s)
10	The pile burned with a small blue flame which produced orange sparks, grey smoke and left black charred remains.	291	0.687
20	The pile burned with a small blue flame which self-extinguished within the initial 30 mm but continued to smoulder across the pile producing grey smoke.	4105	0.049
30	The pile burned with a small blue flame which self-extinguished within the initial 30 mm, without propagating combustion.	-	-
40	The pile burned with a small blue flame which self-extinguished within the initial 30 mm but continued to smoulder across the pile producing grey smoke.	4102	0.049
50	The pile burned with a small blue flame which self-extinguished within the initial 30 mm but continued to smoulder across the pile producing grey smoke	4045	0.049
60	The pile burned with a small blue flame which self-extinguished within the initial 30 mm but continued to smoulder across the pile producing grey smoke	2527	0.079
70	The pile burned with a small blue flame which self-extinguished within the initial 30 mm but continued to smoulder across the pile producing grey smoke	2088	0.096
80	The pile did not ignite but smouldered across the pile, producing grey smoke.	2669	0.075
90	The pile failed to ignite	-	-
Maximum burning rate = 2.105 mm/s Maximum burning rate reference mixtures = 0.687 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 burned with a blue flame which produced orange sparks, grey smoke and left black charred remains.	264	0.758
2	The pile burned with a blue flame which produced orange sparks, grey smoke and left black charred remains.	274	0.730
3	The pile burned with a blue flame which produced orange sparks, grey smoke and left black charred remains.	273	0.733
4	The pile burned with a blue flame which produced orange sparks, grey smoke and left black charred remains.	290	0.690
5	The pile burned with a blue flame which produced orange sparks, grey smoke but self-extinguished after propagating combustion over 185mm and smouldered along the remaining distance, leaving black charred remains.	1031	0.194
6	The pile burned with a blue flame which produced orange sparks, grey smoke but self-extinguished after propagating combustion over 177mm and smouldered along the remaining distance, leaving black charred remains.	1389	0.144
Maximum burning rate = 0.758 mm/s Maximum burning rate of reference mixtures = 2.105 mm/s

 

Table 4: Second Fastest Burning Rate Mixture, Test Material: Cellulose Ratio = 70:30

 

Test	Observations	Burning Time (s)	Burning Rate (mm/s)
1	The pile ignited with a small yellow flame which self-extinguished in the initial 30mm and smouldered with a red glow across the pile, producing grey smoke.	3021	0.066
2	The pile ignited with a small yellow flame which self-extinguished in the initial 30mm and smouldered with a red glow across the pile, producing grey smoke.	2836	0.071
3	The pile ignited with a small yellow flame which self-extinguished in the initial 30mm and smouldered with a red glow across the pile, producing grey smoke.	2440	0.082
4	The pile ignited with a small yellow flame which self-extinguished in the initial 30mm and smouldered with a red glow across the pile, producing grey smoke.	2554	0.078
5	The pile ignited with a small yellow flame which self-extinguished in the initial 30mm and smouldered with a red glow across the pile, producing grey smoke.	2199	0.091
6	The pile ignited with a small yellow flame which self-extinguished in the initial 30mm and smouldered with a red glow across the pile, producing grey smoke.	2358	0.085
Maximum burning rate = 0.091 mm/s Maximum burning rate of reference mixtures = 2.105 mm/s

 

Table 5: Third Fastest Burning Rate Mixture, Test Material: Cellulose Ratio 60:40

 

Test	Observations	Burning Time (s)	Burning Rate (mm/s)
1	The pile did not ignite but smouldered across the pile, producing grey smoke and leaving dark grey ash.	2602	0.077
2	The pile did not ignite but smouldered across the pile, producing grey smoke and leaving dark grey ash.	2356	0.085
3	The pile did not ignite but smouldered across the pile, producing grey smoke and leaving dark grey ash.	3027	0.066
4	The pile did not ignite but smouldered across the pile, producing grey smoke and leaving dark grey ash.	2735	0.073
5	The pile did not ignite but smouldered across the pile, producing grey smoke and leaving dark grey ash.	2407	0.083
6	The pile did not ignite but smouldered across the pile, producing grey smoke and leaving dark grey ash.	3289	0.061
Maximum burning rate = 0.085 mm/s Maximum burning rate of reference mixtures = 2.105 mm/s

Interpretation of results:

other: Not classified in accordance with EU criteria.

Conclusions:

Sinter Ore 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:

The oxidising properties of the test material were investigated in a study which was conducted in accordance with the standardised guideline EU Method A.17.

Under the conditions of the study, the test material was 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.

Description of key information

The substance has been determined, using EU method A17,  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 barium nitrate/cellulose mixtures.

Key value for chemical safety assessment

Oxidising properties:

no

Additional information

The oxidising properties of the test material were investigated in a study which was conducted in accordance with the standardised guideline EU Method A.17. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).

Under the conditions of the study, the test material was 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.

Justification for classification or non-classification

In accordance with the criteria for classification as defined in Annex I, Regulation (EC) No 1272/2008, the substance does not require classification with respect to oxidising properties.