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EC number: 257-913-4 | CAS number: 52434-90-9
- 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

Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2018
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: non GLP study
- Qualifier:
- no guideline required
- Principles of method if other than guideline:
- Sample was characterized in terms of particle size by Single Particle Optical Sensing (SPOS)
- Type of method:
- other: Single Particle Optical Sensing (SPOS)
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Percentile:
- D10
- Mean:
- 7.6 µm
- St. dev.:
- 1.34
- Percentile:
- D50
- Mean:
- 16.2 µm
- St. dev.:
- 1.34
- Percentile:
- D90
- Mean:
- 29.4 µm
- St. dev.:
- 1.34
- Percentile:
- other: Dmean
- Mean:
- ca. 17.7 µm
- St. dev.:
- 1.34
- Conclusions:
- The sample was characterized in terms of particle size by Single Particle Optical Sensing (SPOS) and the mean diameters at the 10%, 50% and 90% of the volume distribution are:
D10: 7,6 µm
D50: 16,2 µm
D90: 29,4 µm
with a mean value of 17.7 µm. - Executive summary:
About 10 mg exactly weighed of powder were suspended in 3 mL of a 0.1% Tween 20 aqueous solution, previously filtered by a 0.2 Pm membrane filter (VWR International, I). Samples were characterized in terms of particle size by Single Particle Optical Sensing (SPOS) using an Accusizer 770 (PSS Inc. USA). Particle size was expressed as undersize cumulative percentage of the volume distribution and the population dispersity was referred as span and calculated as reported in the following equation: span = (d90 − d10)/ d50
where d10, d50 and d90 represent the mean diameters at the 10%, 50% and 90% of the volume distribution, respectively.The results are the following: D10: 7,6 µm; D50: 16,2 µm; D90: 29,4 µm; mean value of 17.7 µm.
Reference
Description of key information
The sample was characterized in terms of particle size by Single Particle Optical Sensing (SPOS) and the mean diameters at the 10%, 50% and 90% of the volume distribution are:
D10: 7,6 µm
D50: 16,2 µm
D90: 29,4 µm
with a mean value of 17.7 µm.
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