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EC number: 689-986-7 | CAS number: 1742-79-6
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Oxidising properties
Administrative data
- Endpoint:
- oxidising solids
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 15 May 2013 to 17 March 2014
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Conducted according to current test guidelines and GLP compliant
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 014
- Report date:
- 2014
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.17 (Oxidising Properties (Solids))
- Deviations:
- no
- GLP compliance:
- yes
Test material
- Reference substance name:
- 2-oxo-1,2-dihydropyridin-1-yl acetate
- EC Number:
- 689-986-7
- Cas Number:
- 1742-79-6
- Molecular formula:
- C7H7NO3
- IUPAC Name:
- 2-oxo-1,2-dihydropyridin-1-yl acetate
- Reference substance name:
- 1742-78-6
- IUPAC Name:
- 1742-78-6
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- Name: Oxypyrion acetate
CAS Number: 1742-78-6
Batch number: 14058400
Purity: 97.83%
Date of arrival: 22 April 2013
Expiry date: 30 November 2013
Storage conditions: Refrigerated (2 to 8°C)
Constituent 1
Constituent 2
Study design
- Contact with:
- powdered cellulose
- Duration of test (contact time):
- 2 min
Results and discussion
Test results (Oxidising solids)open allclose all
- Sample tested:
- 1:1 sample-to-cellulose ratio
- Parameter:
- burning time of reaction over a distance of 200 mm
- Result:
- 141 s
- Sample tested:
- 1:1 sample-to-cellulose ratio
- Parameter:
- burning rate
- Result:
- 1.42 mm/s
- Sample tested:
- reference mixture as specified
- Remarks:
- 60% barium nitrate/40% Cellulose
- Parameter:
- burning time of reaction over a distance of 200 mm
- Result:
- 140 s
- Sample tested:
- reference mixture as specified
- Remarks:
- 60% barium nitrate/40% Cellulose
- Parameter:
- burning rate
- Result:
- 1.43 mm/s
- Sample tested:
- test mixture as specified
- Remarks:
- 60%Ba(NO3 )2 / 40%Kieselguhr
- Parameter:
- burning rate
- Result:
- 0 mm/s
- Remarks on result:
- mixture does not ignite and burn
- Sample tested:
- test mixture as specified
- Remarks:
- 1:1 test item: Kieselgur
- Parameter:
- burning rate
- Result:
- 1.2 mm/s
Any other information on results incl. tables
Preliminary test
The Oxypyrion acetate/ cellulose mixture ignited almost immediately when the flame came in contact with it. The mixture burnt with a yellow/orange flame and produced black smoke. The whole sample burned through in approximately 4 minutes, quietly with no vigorous reaction.
Train test
For the 10%, 20%, 30% and 40% mixtures of test substance with cellulose, the train burnt along the outer surface with wicking. Unburnt material was found in the core of the train after the test was completed.
For the 60% mixture of test substance with cellulose, the train ignited almost immediately on contact with the flame, a yellow flame and black smoke were produced. The train burned along outer surface only. Unburnt material was found in the core of the train after the test was completed.
For the 70% mixture of test substance with cellulose, the train ignited and burnt with a yellow flame, a large amount of black smoke was also produced. The flame wicked along the surface. Unburnt material was found in the core of the train after the test was completed.
For the 80% mixture of test substance with cellulose, the train burnt slowly with a yellow flame and black smoke. The train also melted and cooled to leave a black residue.
For the 90% mixture of test substance with cellulose, the end of the train melted but no burning or ignition occurred during the 2-minute period of heating.
As the burning rates of the test substance mixtures at 30%, 40% and 50% were the highest giving burning rates of 1,38; 1,45 and 1,42 mm/second, respectively, the test was then repeated a further five times for each of these mixtures. The maximum burning rate for the Oxypyrion acetate/cellulose mixtures in this further test was 1,38 mm/sec at 40% test substance, which compared with 1,43mm/sec for the 60% reference substance mixture.
This suggested Oxypyrion acetate may be oxidising and further evaluation was carried out, using Kieselguhr instead of cellulose, in order to check for a false positive test.
Burning Rates – Oxidising Properties Train Test
|
|
Train Test |
|
|
|
Barium nitrate reference substance: |
|||||
Nominal proportion (%) |
Weight of Ba(NO3)2(g) |
Weight of cellulose (g) |
Distance burned (mm) |
Burning time (sec) |
Burning rate (mm/sec) |
60 |
17,97 |
11,97 |
200 |
140 |
1,43* |
|
|
|
|
|
|
Oxypyrion acetate test substance: |
|||||
Nominal proportion (%) |
Weight of Test Substance (g) |
Weight of cellulose (g) |
Distance burned (mm) |
Burning time (sec) |
Burning rate (mm/sec) |
10 |
1,53 |
13,49 |
200 |
255 |
0,78 |
20 |
3,00 |
11,96 |
200 |
163 |
1,23 |
30 |
5,97 |
14,02 |
200 |
145 |
1,38 |
40 |
7,99 |
12,00 |
200 |
138 |
1,45 |
50 |
9,91 |
9,90 |
200 |
141 |
1,42 |
60 |
11,99 |
8,01 |
200 |
175 |
1,14 |
70 |
13,99 |
6,10 |
200 |
170 |
1,18 |
80 |
12,06 |
3,08 |
200 |
416 |
0,48 |
90 |
13,47 |
1,56 |
Did not ignite or burn |
* A previous reference substance test had been carried out with 18,02 g of barium nitrate plus 11,99 g of cellulose. This gave a burning time over 200 mm of 250 seconds, which gave a burning rate of 0,8 mm/second. As this was below the expected value of 1 mm/second, the procedure was repeated.
False positive test
The mixtures at 10 and 20 % Oxypyrion acetate failed to ignite.For the mixture at 30%, burning occurred along the outer surface and the flameextinguished after 77 mm.
For the mixtures at 40%, 50% and 60%, a flame was observed to wick along the outersurface of the train leaving unburnt test substance on the inside of the train. The flame was yellow and gave off sooty smoke.For the mixtures at 70% and 80%, a flame was observed to wick along the outer surface of the train leaving unburnt test substance in the core of the train. The train also partly melted leaving a black residue.
For the mixture at 90%, the end of the train melted, no burning or ignition occurred within the 2-minute test period.
The burning rates in the presence of Kieselguhr were slightly lower than those of any mixtures containing cellulose but the pattern of burning rates was similar. This indicates that Oxypyrion acetate cannot be oxidising because an oxidising material would show no propagation of any reaction through any of the mixtures of the test substance and Kieselguhr. Full results are shown inTable 4. The burning characteristics recorded throughout the test are not indicative of oxidation.The calculated oxygen balance does not indicate that Oxypyrion acetate is likely to be oxidising.
It is therefore concluded, that the high burning rates seen in the presence of cellulose are attributable to true burning of the Oxypyrion acetate/cellulose mixtures and not to an oxidising reaction.
Substance | Nominal proportion (% | Weight of Substance or Reference (g) | Weight of Kieselguhr (g) | Distance burned (mm) | Burning time (sec) | Burning rate (mm/sec) |
Barium nitrate reference substance | 60 | 1.50 | 13.51 | Did not ignite or burn | ||
Test substance |
10 20 30 40 50 60 70 80 90 |
1,50 2,98 4.46 5.97 7.48 8.98 10.50 11.97 13.50 |
13.51 11.96 10.49 8.96 7.52 5.98 4.49 2.99 1.54 |
Did not ignite or burn 77 200 200 200 200 200 200 |
Did not ignite or burn 89 152 166 158 181 194 Did not ignite or burn
|
|
Oxypyrion acetate is not considered to be oxidising.
Table 4 Burning Rates – Oxidising Properties False Positive Test
Applicant's summary and conclusion
- Interpretation of results:
- other: no oxidising properties
- Remarks:
- Migrated information
- Conclusions:
- Oxypyrionacetate was not considered to have oxidising properties.
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