Registration Dossier
Registration Dossier
Diss Factsheets
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EC number: 208-904-9 | CAS number: 546-56-5
- 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

Flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- pyrophoric solids
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied
- Endpoint:
- flammable solids
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2016-11-23
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)
- Version / remarks:
- Part III, Section 33.2.1.4
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Key result
- Test procedure:
- burning rate test: preliminary screening test
- Remarks on result:
- substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period
- Interpretation of results:
- not classified based on GHS criteria
- Conclusions:
- No ignition nor propagation was observed during a burning rate test using a relevant test method and in compliance with GLP. The result is considered to be reliable.
- Endpoint:
- substances / mixtures which in contact with water emit flammable gases
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the experience in production or handling shows that the substance does not react with water, e.g. the substance is manufactured with water or washed with water
- Endpoint:
- flammable solids
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: VDI2263 Part 1
- Principles of method if other than guideline:
- The study was based on the principles found in VDI2263 Part 1
- GLP compliance:
- not specified
- Key result
- Test procedure:
- other: Combustibility test
- Remarks on result:
- other: The substance (as received) melts without catching fire (Rating 1)
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- In a combustibility study, the substance as received melts and does not catch fire, hence a combustibility rating of 1 was assigned. The result is considered to be reliable.
Referenceopen allclose all
Preliminary test
Experimental conditions
Room humidity: About 51%
Room temperature: About 17°C
Atmospheric pressure: 97.8 kPa
Type of test item: Powder
Application of the flame: Until 2 min maximum
Test period: 2 min
Assay No. 1
The test item melted during the application of the burner’s flame. Neither ignition nor propagation was observed.
Assay No. 2
The same observations as for the assay No. 1 were recorded.
Main test
Taking into account the results obtained during the preliminary test, no main test was performed.
Conclusion
In two assays that were part of the preliminary test, the test item melted during application of the burner’s flame. Neither ignition nor propagation was observed
Determination of the combustion class (train firing)
Test substance as received
Fire spread |
Type of reaction |
Combustion rating |
No fire spread |
Does not catch fire |
1 |
No fire spread |
Brief ignition, rapid extinction |
2 |
No fire spread |
Local combustion or smouldering at most, slight spread |
3 |
Fire spread |
Glows red hot or slow decomposition without flame |
4 |
Fire spread |
Burns like a firework, or slow steady burning with flame |
5 |
Fire spread |
Very rapid combustion with flame or rapid decomposition without flame |
6 |
1) Ignition source – Gas flame. Melts does not catch fire. Rating 1
2) Ignition source – Si/PbO2. Melts does not catch fire. Rating 1
Milled substance (<63µm)
Fire spread |
Type of reaction |
Combustion rating |
No fire spread |
Does not catch fire |
1 |
No fire spread |
Brief ignition, rapid extinction |
2 |
No fire spread |
Local combustion or smouldering at most, slight spread |
3 |
Fire spread |
Glows red hot or slow decomposition without flame |
4 |
Fire spread |
Burns like a firework, or slow steady burning with flame |
5 |
Fire spread |
Very rapid combustion with flame or rapid decomposition without flame |
6 |
1) Ignition source – Gas flame. Melts does not catch fire. Rating 1
2) Ignition source – Si/PbO2. Melts does not catch fire. Rating 1
Description of key information
Flammability: not classified
Key value for chemical safety assessment
- Flammability:
- not classified
Additional information
The requirement to test the substance for pyrophoricity and flammability in contact with water was waived in accordance with Section 1 of REACH Annex XI, because there is no indication on the basis of structure and experience in use and handling that the substance is pyrophoric (flammable in contact with air) or flammable in contact with water.
In a readily combustible solid study in accordance with UN Test N.1 Method and in compliance with GLP, the substance was observed not to ignite nor propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minute test period. Also, in a combustibility study in accordance with the principle of VDI2263 Part 1, the substance as received melts and does not catch fire, hence a combustibility rating of 1 was assigned. The results are considered to be reliable and are used as weight of evidence that the substance is not flammable.
A Minimum Ignition Energy (MIE) of 1-3 mJ was determined for the milled sample (<63 µm, not as supplied) of the substance using a relevant test method in accordance with BS EN 13821:2002.
Justification for classification or non-classification
The substance is not classified for flammability as no ignition was observed during the study conducted in accordance with UN N.1 Test Method and in a combustion study conducted according to the principle of VDI2263 Part 1.
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