Yttrium(3+) acetate

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

18 September 2017 to 20 September 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

Version / remarks:

2008

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Contact with:

powdered cellulose

Key result

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

burning rate

Remarks on result:

mixture does not ignite and burn

Key result

Sample tested:

4:1 sample-to-cellulose ratio

Parameter:

burning rate

Remarks on result:

mixture does not ignite and burn

Key result

Sample tested:

reference mixture as specified

Remarks:

Nitrate: Cellulose Ratio (10:90)

Parameter:

burning rate

Result:

0.49 mm/s

Key result

Sample tested:

reference mixture as specified

Remarks:

Nitrate: Cellulose Ratio (20:80)

Parameter:

burning rate

Result:

0.58 mm/s

Key result

Sample tested:

reference mixture as specified

Remarks:

Nitrate: Cellulose Ratio (30:70)

Parameter:

burning rate

Result:

0.4 mm/s

Key result

Sample tested:

reference mixture as specified

Remarks:

Nitrate: Cellulose Ratio (40:60)

Parameter:

burning rate

Result:

0.56 mm/s

Key result

Sample tested:

reference mixture as specified

Remarks:

Nitrate: Cellulose Ratio (50:50)

Parameter:

burning rate

Result:

0.71 mm/s

Key result

Sample tested:

reference mixture as specified

Remarks:

Nitrate: Cellulose Ratio (60:40)

Parameter:

burning rate

Result:

0.83 mm/s

Key result

Sample tested:

reference mixture as specified

Remarks:

Nitrate: Cellulose Ratio (70:30)

Parameter:

burning rate

Result:

0.9 mm/s

Key result

Sample tested:

reference mixture as specified

Remarks:

Nitrate: Cellulose Ratio (80:20)

Parameter:

burning rate

Result:

1.25 mm/s

Key result

Sample tested:

reference mixture as specified

Remarks:

Nitrate: Cellulose Ratio (90:10)

Parameter:

burning rate

Result:

1.74 mm/s

Table 1: Reference Mixtures

Barium Nitrate: Cellulose Ratio	Observations	Burning Time (min:s)	Burning Rate (mm/s)
10:90	Green flame with blue edges, orange sparks with light grey fumes	6:46	0.49
20:80	Green flame with blue edges, orange sparks with grey fumes	5:46	0.58
30:70	Green flame with blue edges, orange sparks with light grey fumes	8:25	0.40
40:60	Green flame with blue edges, orange sparks with light grey fumes	5:56	0.56
50:50	Green/orange flame, orange sparks with light grey fumes	4:43	0.71
60:40	Green/orange flame, orange sparks with light grey fumes	4:02	0.83
70:30	Green/orange flame, orange sparks with light grey fumes	3:43	0.90
80:20	Green/orange flame, orange sparks with light grey fumes	2:40	1.25
90:10	Green/orange flame, orange sparks with light grey fumes	1:55	1.74

Maximum burning rate: 1.74 mm/s

Table 2: Sample Mixtures

Test Material: Cellulose Ratio	Observations	Burning Time (min:s)	Burning Rate (mm/s)
10:90	Green flame with blue edges, orange sparks with light grey fumes	0:51	N/A
20:80	Green flame with blue edges, orange sparks with grey fumes	0:26	N/A
30:70	Green flame with blue edges, orange sparks with light grey fumes	-	N/A
40:60	Green flame with blue edges, orange sparks with light grey fumes	-	N/A
50:50	Green/orange flame, orange sparks with light grey fumes	-	N/A
60:40	Green/orange flame, orange sparks with light grey fumes	-	N/A
70:30	Green/orange flame, orange sparks with light grey fumes	-	N/A
80:20	Green/orange flame, orange sparks with light grey fumes	-	N/A
90:10	Green/orange flame, orange sparks with light grey fumes	-	N/A

The test material:cellulose sample mixtures failed to support/propagate combustion over the full 200 mm of the test and so burning rates could not be calculated. This demonstrated the test material did not have oxidising properties.

Interpretation of results:

other: Not classified in accordance with EU criteria

Conclusions:

Under the conditions of this study the test material has been determined not to have oxidising properties.

Executive summary:

The oxidising properties of the test material were investigated in accordance with the standardised guideline EU Method A.17, under GLP conditions.

Reference mixtures were prepared by mixing barium nitrate and cellulose in a range of ratios (10 to 90% by weight). Similarly, sample mixtures were prepared by mixing test material and cellulose in a range of ratios (10 to 90% by weight). A mould (250 mm long x 20 mm wide x 10 mm high) was loosely filled with a slight excess of each mixture in turn. The mould was dropped from a height (approximately 2 cm) onto a solid surface. Any excess mixture was scraped off and the lateral limitations of the mould removed. The remaining mixture was smoothed using a roller. A non-porous, non-combustible board was placed on top of the mould which was then inverted and carefully removed forming a pile of the mixture. One end of the pile was ignited using an air-rich Bunsen burner flame. The time taken for the reaction zone to travel over a distance of 200 mm and details of the mode of reaction, after propagating an initial distance of 30 mm, were recorded.

The test material:cellulose sample mixtures failed to support/propagate combustion over the full 200 mm of the test and so burning rates could not be calculated.

Under the conditions of this study the test material has been determined not to have oxidising properties.

Description of key information

Under the conditions of this study the test material has been determined not to have oxidising properties.

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

The oxidising properties of the test material were investigated in accordance with the standardised guideline EU Method A.17, under GLP conditions.

Reference mixtures were prepared by mixing barium nitrate and cellulose in a range of ratios (10 to 90% by weight). Similarly, sample mixtures were prepared by mixing test material and cellulose in a range of ratios (10 to 90% by weight). A mould (250 mm long x 20 mm wide x 10 mm high) was loosely filled with a slight excess of each mixture in turn. The mould was dropped from a height (approximately 2 cm) onto a solid surface. Any excess mixture was scraped off and the lateral limitations of the mould removed. The remaining mixture was smoothed using a roller. A non-porous, non-combustible board was placed on top of the mould which was then inverted and carefully removed forming a pile of the mixture. One end of the pile was ignited using an air-rich Bunsen burner flame. The time taken for the reaction zone to travel over a distance of 200 mm and details of the mode of reaction, after propagating an initial distance of 30 mm, were recorded.

The test material:cellulose sample mixtures failed to support/propagate combustion over the full 200 mm of the test and so burning rates could not be calculated.

Under the conditions of this study the test material has been determined not to have oxidising properties.

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.