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EC number: 235-517-2 | CAS number: 12262-25-8 This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 53430.
- 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
Link to relevant study record(s)
- Endpoint:
- oxidising solids
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 30 June - 18 October, 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:
- 31 May 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Specific details on test material used for the study:
- Expiry date 01 December 2020
- Contact with:
- other: Oxidiser cellulose mixtures containing 10 to 90 % weight of oxidiser in 10 % increments were prepared. Based on sponsor’s suspicion that the result is a false positive the test was repeated using kieselguhr in place of cellulose.
- Duration of test (contact time):
- 423 s
- Key result
- Sample tested:
- other: Oxidiser cellulose mixtures containing 10 to 90 % weight of oxidiser in 10 % increments were prepared;test was repeated using kieselguhr in place of cellulose.test was repeated using kieselguhr in place of cellulose.
- Remarks:
- burning time: 399sec
- Parameter:
- burning time of reaction over a distance of 200 mm
- Result:
- 0.501 mm/s
- Remarks on result:
- other: In the course of the Main Test burning rate of the mixture containing 10% test item was higher than the highest burning rate of the reference mixture.
- Remarks:
- Therefore Leuco Sulfur Blue 9 is considered to be an oxidizing substance, under these testing conditions. The test was repeated with kieselguhr in place of cellulose. These mixtures did not burn.
- Key result
- Sample tested:
- other: Oxidiser cellulose mixtures containing 10 to 90 % weight of oxidiser in 10 % increments were prepared;test was repeated using kieselguhr in place of cellulose.test was repeated using kieselguhr in place of cellulose.
- Remarks:
- burning time: 381sec
- Parameter:
- burning time of reaction over a distance of 200 mm
- Result:
- 0.525 mm/s
- Remarks on result:
- other: In the course of the Main Test burning rate of the mixture containing 10% test item was higher than the highest burning rate of the reference mixture.
- Remarks:
- Therefore Leuco Sulfur Blue 9 is considered to be an oxidizing substance, under these testing conditions. The test was repeated with kieselguhr in place of cellulose. These mixtures did not burn.
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- The cone-shaped pile formed during the Preliminary Test was ignited, but the flame went out. The reaction was not vigorous; therefore the Main Test was performed. The highest value of burning rate of a given mixture is relevant for evaluation.
In the course of the Main Test burning rate of the mixture containing 10% test item was higher than the highest burning rate of the reference mixture. Therefore Leuco Sulfur Blue 9 should be considered as oxidizing under these testing conditions. The details (contents of the mixtures and the burning times) are summarized in Tables 1, 2 and 3. Based on the manufacturing process and chemical structure of the substance, this result was however deemed as a false positive.
As stated in method A.17 of EC Regulation 40/2008, section 1.6.2.2 the test was repeated with kieselguhr in place of cellulose. These mixtures did not burn. Then it is concluded that the test item Leuco Sulfur Blue 9 is not considered as an oxidizing substance - Executive summary:
The purpose of this study was to investigate the oxidising properties of the test item.
No further testing is required when the preliminary test clearly indicates that the substance has oxidising properties. When this is not the case, the substance is subjected to the full test.
In the main test, the substance to be tested and a defined combustible substance were mixed in various ratios. Each mixture was then formed into a pile and the pile ignited at one end. The maximum burning rate determined was compared with the maximum burning rate of the reference mixture. Burning rate of the test mixture containing 10% Leuco Sulfur Blue 9 was found to be higher than the maximum burning rate of the reference mixture.Therefore, Leuco Sulfur Blue 9 is considered to be an oxidizing substance, under these testing conditions.
As the result was suspected of being a false positive, the test was repeated using kieselguhr in place of cellulose.These mixtures did not burn.
Reference
Reference measurement
Ratio |
Weight |
Weight |
Burning time (sec) |
Burning rate (mm/sec) |
|||||
10 : 90 % |
2.00 |
18.01 |
469 |
0.426 |
|||||
20 : 80 % |
4.02 |
16.01 |
406 |
0.493 |
|||||
30 : 70 % |
6.04 |
14.02 |
395 |
0.506 |
|||||
40 : 60 % |
12.00 |
18.01 |
439 |
0.456 |
|||||
50 : 50 % |
15.02 |
15.00 |
503 |
0.398 |
|||||
60 : 40 % |
18.01 |
12.01 |
563 |
0.355 |
|||||
70 : 30 % |
21.01 |
9.00 |
638 |
0.313 |
|||||
80 : 20 % |
40.00 |
10.02 |
- |
- |
|||||
90 : 10 % |
45.00 |
5.03 |
- |
- |
Main Test
Ratio |
Weight |
Weight |
Burning time |
Burning rate (mm/sec) |
Type of burning |
||||||
10 : 90 % |
2.00 |
18.06 |
423 |
0.473 |
ignited, burnt with flame |
||||||
20 : 80 % |
4.03 |
16.06 |
467 |
0.428 |
ignited, burnt with flame |
||||||
30 : 70 % |
6.01 |
13.99 |
- |
- |
ignited, did not pro-pagate over 200 mm |
||||||
40 : 60 % |
12.01 |
18.03 |
- |
- |
ignited, did not pro-pagate over 200 mm |
||||||
50 : 50 % |
15.01 |
14.99 |
- |
- |
ignited, did not pro-pagate over 200 mm |
||||||
60 : 40 % |
18.00 |
12.03 |
- |
- |
ignited, did not pro-pagate over 200 mm |
||||||
70 : 30 % |
14.00 |
6.00 |
- |
- |
ignited, did not pro-pagate over 200 mm |
||||||
80 : 20 % |
16.04 |
4.05 |
- |
- |
ignited, did not pro-pagate over 200 mm |
||||||
90 : 10 % |
18.03 |
2.06 |
- |
- |
ignited, but the flame went out |
Results of the repeated tests with the mixture containing 10% test item
Ratio |
Weight |
Weight |
Burning time |
Burning rate (mm/sec) |
|||||
10 : 90 % |
2.03 |
18.01 |
399 |
0.501 |
|||||
10 : 90 % |
2.01 |
18.00 |
381 |
0.525 |
Trials
with test item –kieselguhrmixtures
Ratio |
Weight |
Weight |
Burning time |
Burning rate (mm/sec) |
Type of burning |
10 : 90 % |
2.03 |
18.06 |
- |
- |
no ignition |
20 : 80 % |
4.00 |
16.02 |
- |
- |
no ignition |
30 : 70 % |
6.01 |
14.02 |
- |
- |
no ignition |
40 : 60 % |
12.02 |
18.02 |
- |
- |
no ignition |
50 : 50 % |
15.00 |
14.99 |
- |
- |
no ignition |
60 : 40 % |
18.00 |
12.01 |
- |
- |
no ignition |
70 : 30 % |
14.05 |
6.06 |
- |
- |
no ignition |
80 : 20 % |
16.00 |
3.99 |
- |
- |
ignited, but the flame went out |
90 : 10 % |
18.03 |
2.00 |
- |
- |
ignited, but the flame went out |
Description of key information
The purpose of this study was to investigate the oxidizing properties of the test item. In the course of the Main Test burning rate of the mixture containing 10% test item was higher than the highest burning rate of the reference mixture. This result was however deemed as a false positive.
As stated in method A.17 of EC Regulation 40/2008, section 1.6.2.2 the test was repeated with kieselguhr in place of cellulose. These mixtures could not be ignited. Then it is concluded that the test item Leuco Sulphur Blue 9 is not considered as an oxidizing substance
Key value for chemical safety assessment
- Oxidising properties:
- non oxidising
Additional information
Justification for classification or non-classification
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