Slags, ferromanganese-manufg.

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

6 August 2009 to 19 August 2009

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive and done to a valid guideline.

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:

0.081 other: mm/s (migrated information)

Remarks on result:

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

Sample tested:

reference mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

0.057 other: mm/s (migrated information)

Remarks on result:

other: Fastest mixture, test material: cellulose, 60:40

Table 1: Reference mixtures

% Barium Nitrate	Observations	Burning Time (s)	Burning Rate (mm/s)
10	The pile burned with an orange flame which left dark grey remains that emitted grey smoke	180	1.111
20	The pile burned with an orange flame which left dark grey remains that emitted grey smoke	194	1.010
30	The pile burned with an orange flame which left dark grey remains that emitted grey smoke	198	1.220
40	The pile burned with an orange/green flame which left dark grey remains that emitted grey smoke	164	1.220
50	The pile burned with an orange/green flame which left dark grey remains that emitted grey smoke	130	1.538
60	The pile burned with an orange/green flame which left dark grey remains that emitted grey smoke	94	2.218
70	The pile burned with an orange/green flame which left dark grey remains that emitted grey smoke	101	1.980
80	The pile burned with an orange/green flame which left dark grey remains that emitted grey smoke	262	0.763
90	The pile failed to ignite	-	-
Maximum burning rate = 2.128 mm/s

 

Table 2: Cellulose mixtures

% Barium Nitrate	Observations	Burning Time (s)	Burning Rate (mm/s)
10	The pile burned with an orange flame which produces grey smoke leaving black charred remains.	269	0.743
20	The pile ignited with a small orange flame which self-extinguished after propagating over 40 mm, then smouldered producing grey smoke for another 2mm.	-	-
30	The pile ignited with a very small orange flame which self-extinguished within the initial 30 mm and failed to propagate combustion.	-	-
40	The pile ignited with a very small orange flame which self-extinguished within the initial 30 mm and failed to propagate combustion.	-	-
50	The pile ignited with a very small orange flame which self-extinguished within the initial 30 mm and failed to propagate combustion.	-	-
60	The pile ignited with a very small orange flame, which self-extinguished within the initial 30 mm but continued to smoulder across the pile producing grey smoke and leaving brown charred remains.	3579	0.056
70	The pile ignited with a very small orange flame which self-extinguished within the initial 30 mm and failed to propagate combustion.	-	-
80	The pile ignited with a very small orange flame which self-extinguished within the initial 30 mm and failed to propagate combustion.	-	-
90	The pile failed to ignite	-	-
Maximum burning rate = 0.743 mm/s Maximum burning rate reference mixtures = 2.128 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 an orange flame, which produced grey smoke and left black charred remains.	269	0.743
2	The pile burned with an orange flame, which produced grey smoke and left black charred remains.	265	0.755
3	The pile burned with an orange flame, which produced grey smoke and left black charred remains.	247	0.810
4	The pile burned with an orange flame, which produced grey smoke and left black charred remains.	257	0.778
5	The pile burned with an orange flame, which produced grey smoke and left black charred remains.	254	0.787
6	The pile burned with an orange flame, which produced grey smoke and left black charred remains.	283	0.707
Maximum burning rate = 0.810 mm/s Maximum burning rate of reference mixtures = 2.128 mm/s

 

Table 4: Second Fastest Burning Rate Mixture, Test Material: Cellulose Ratio = 60:40

Test	Observations	Burning Time (s)	Burning Rate (mm/s)
1	The pile smouldered with a dull orange ember, producing grey smoke and leaving dark grey remains.	3480	0.057
2	The pile smouldered with a yellow glowing ember which self-extinguished without propagating combustion.	-	-
3	The pile smouldered with a yellow glowing ember which self-extinguished without propagating combustion.	-	-
4	The pile smouldered with a yellow glowing ember which self-extinguished without propagating combustion.	-	-
5	The pile smouldered with a yellow glowing ember which self-extinguished without propagating combustion.	-	-
6	The pile smouldered with a dull orange ember, producing grey smoke and leaving dark grey remains.	3607	0.055
Maximum burning rate = 0.057 mm/s Maximum burning rate of reference mixtures = 2.128 mm/s

 

 

Interpretation of results:

other: no oxidising properties

Conclusions:

FeMn Slag was determined not to have oxidising properties as the test material/ cellulose mixtures failed to propagate combustion over the full 200 mm of the test 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 is not an oxidiser, EU Method A.17, Atwal &Tremain (2009)

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.

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 as an oxidiser.