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Diss Factsheets
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EC number: 951-407-3 | 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 dustiness
Administrative data
- Endpoint:
- nanomaterial dustiness
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 021
- Report date:
- 2021
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 55992-1:2006 ("Determination of a parameter for the dust formation of pigments and extenders - Part 1: Rotation method").
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- rotating cylinder
Test material
- Reference substance name:
- branched and cross-linked multi-walled carbon nanotubes
- Molecular formula:
- C
- IUPAC Name:
- branched and cross-linked multi-walled carbon nanotubes
- Test material form:
- solid: nanoform, no surface treatment
Constituent 1
- Specific details on test material used for the study:
- Product name: ATHLOS 200 CARBON NANOSTRUCTURE PELLETS
Batch-No.: V20169
Substance name: Carbon
Chemical formula: C
Appearance: Black odourless pelltes
Physical state: Solid
Substance density: 2 g/cm³
Substance humidity: 0.08 % (by DMT)
Substance stability: Stable under normal conditions
Results and discussion
Dustiness index
- Key result
- Mean:
- ca. 15.52 other: mg/g
- St. dev.:
- 0 other: mg/g
Any other information on results incl. tables
Summary of results of the examined dust sample
Quantity of substance used | 1.00 g | Relative amounts of used quantity | Relative amounts of the whole fraction |
Total dust mass in impactor | 15.53 mg | ||
Mass Median Aerodynamic Diameter (MMAD)* | 20.50 µm | ||
Geometric Standard Deviation (GSD)* | 3.80 µm | ||
Total dustiness, whole fraction | 15.52 mg/g | ||
Dustiness, inhalable fraction | 10.97 mg/g | 1.10% | 70.69% |
Dustiness, thoracic fraction | 6.29 mg/g | 0.63% | 40.55% |
Dustiness, alveolar fraction | 3.73 mg/g | 0.37% | 24.04% |
*Median of the distribution of airborne particle mass with respect to the aerodynamic diameter. MMAD is one of the metrics most widely adopted as a single number descriptor of aerodynamic particle-size distribution. MMADs are usually accompanied by the geometric standard deviation (GSD) which characterizes the variability of the particle size distribution. The diameter that divides the mass distribution of an aerosol in half [P.A. Baron, K. Willecke; Aerosol Measurement, 2005].
Applicant's summary and conclusion
- Conclusions:
- The most important result of this examination is, that for ATHLOS 200 CARBON
NANOSTRUCTURE PELLETS, the respirable fraction represented 0.37 % of the quantity of
the substance used under the modified Heubach procedure - Executive summary:
Examinations were performed to determine the dustiness of a substance sample designated as "ATHLOS 200 CARBON NANOSTRUCTURE PELLETS". The objective of these examinations was to determine the dust fractions of this substance. These are the dust fractions which are defined in DIN EN 481 as the:
Inhalable fraction
Thoracic fraction
Respirable fraction
The modified Heubach procedure was applied. In the process, the substance sample was mechanically stressed in a rotating drum (dust generation device), and both the dust already contained in this sample and the dust generated due to abrasion were removed from the dust generation device by an air current. The proportion of dust separated and considered as dust with the ability to become airborne was fed into a seven-stage cascade impactor connected to the dust generation device. Particle size classification was conducted by subsequent weighing of the respective dust masses deposited on the individual cascade stages reflecting certain particle size ranges.
The “total dustiness” value was determined as the ratio of the mass of removed dust to the total sample mass initially weighed in.
Subsequently, the dustiness values for the inhalable, thoracic and respirable fractions according to DIN EN 481 were determinedDustiness values of the "ATHLOS 200 CARBON NANOSTRUCTURE PELLETS" sample
Total dustiness [mg/g] 15.52 Inhalable fraction [mg/g] 10.97 (1.10 %) Thoracic fraction [mg/g] 6.29 (0.63 %) Respirable fraction [mg/g] 3.73 (0.37 %) Mass Median Aerodynamic Diameter (MMAD) [μm] 20.5 Geometric Standard Deviation (GSD) [μm] 3.8 As a conclusion, for the sample “ATHLOS 200 CARBON NANOSTRUCTURE PELLETS”, the respirable fraction represented 0.37 % of the quantity of the substance used under the Modified Heubach procedure.
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