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Diss Factsheets
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EC number: 936-414-1 | CAS number: -
- 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
Nanomaterial agglomeration / aggregation
Administrative data
- Endpoint:
- nanomaterial agglomeration/aggregation
- Remarks:
- NC7000 4.28.1 Nanocyl, Devoille 2019 agglomerate size, rel 1
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
- Report date:
- 2019
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other:
- Version / remarks:
- NF CEN ISO 19749
- Deviations:
- not specified
- Principles of method if other than guideline:
- The measurand was the minimum Ferret diameter of the agglomerate/aggregates.
- GLP compliance:
- no
- Type of method:
- scanning electron microscopy
- Details on methods and data evaluation:
- Results were obtained according to NFCEN ISO 19749 with a relative error of 5 % and a probability of 95%.
- Sampling:
- 2 series of 350 agglomerates/aggregates were analized.
Test material
- Reference substance name:
- carbon
- EC Number:
- 936-414-1
- Molecular formula:
- C
- IUPAC Name:
- carbon
- Test material form:
- solid: nanoform, no surface treatment
- Details on test material:
- - State of aggregation: entangled nanotubes, as described in Section 4.28.1
- Particle size distribution: entangled nanotubes, as described in Section 1.2, 1.4. and 4.28.1.
- Mass median aerodynamic diameter (MMAD): As the product tends to agglomerate this depends on the testing conditions. See Section 4.
- Geometric standard deviation (GSD): Depends on the testing conditions. See Section 4.
- Shape of particles:nanotubes, aspect ratio of ~163:1
- Surface area of particles: 250 - 300 m²/g (BET)
- Crystal structure: graphite.
- Coating: None
- Surface properties: No functionalization intended.
- Density: May vary depending on the batch number. Available information is reported in the Confidential details on test material for each study.
- Moisture content: Not determined. May vary depending on the batch number.
- Residual solvent: Not applicable.
- Activation: Not applicable.
- Stabilisation: Not applicable.
- Other: Not applicable.
Constituent 1
- Specific details on test material used for the study:
- Nanocyl NC7000 was tested as supplied, in dry powder form.
Data gathering
- Instruments:
- Scanning Electron Microscope Zeiss Ultra-Plus with secundary detector In-Lens.
- Calibration:
- No data available.
- Reproducibility:
- 2 series of 350 agglomerates/aggregates were analized.
Results and discussion
Agglomerate / aggregate diameter
- Key result
- Mean diameter:
- 41.2 μm
- St. dev.:
- 1.3 μm
- Medium:
- Dry powder.
Agglomerate / aggregate size
- Key result
- Percentile:
- D50
- Mean:
- 30.1 μm
- St. dev.:
- 1.5 μm
- Medium:
- Dry powder.
Applicant's summary and conclusion
- Conclusions:
- The agglomerates/aggregates in the product as supplied in dry powder form have diverse shapes and sizes.
In this study, 789 agglomerates/agrégates were considered according to the norm CEN ISO 19749.
Mean agglomerate/aggregate size was 41,2 μm ± 1,3 μm while median agglomerate/aggregate size was 30,1 μm ± 1,5 μm. - Executive summary:
Mean minimim Feret diameter of the agglomerates/aggregates is 41,2 μm ± 1,3 μm.
Median minimim Feret diameter of the agglomerates/aggregates is 30,1 μm ± 1,5 μm.
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