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Diss Factsheets
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EC number: 200-718-6 | CAS number: 69-89-6
- 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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
- GLP compliance:
- yes
- Type of method:
- sieving
- Type of particle tested:
- aggregate
- Type of distribution:
- mass based distribution
- Specific details on test material used for the study:
- Purity: > 99%
- Key result
- Percentile:
- other: 0.5
- Mean:
- < 32 µm
- St. dev.:
- 0
- Key result
- Percentile:
- other: 5.5
- Mean:
- > 32 - <= 45 µm
- St. dev.:
- 0.7
- Key result
- Percentile:
- other: 22.6
- Mean:
- > 45 - <= 75 µm
- St. dev.:
- 1.8
- Key result
- Percentile:
- other: 29.3
- Mean:
- > 75 - <= 150 µm
- St. dev.:
- 2
- Key result
- Percentile:
- other: 29.3
- Mean:
- > 150 - <= 300 µm
- St. dev.:
- 0.1
- Key result
- Percentile:
- other: 11.2
- Mean:
- > 300 - <= 850 µm
- St. dev.:
- 0.4
- Key result
- Percentile:
- other: 1.5
- Mean:
- > 850 µm
- St. dev.:
- 0
- Conclusions:
- The test substance was analyzed to estimate the geometric particle size. The average percent of particles larger than 850 µm was 1.5%. The average percent of particles in the range of 300 µm - 850 µm was 11.2%. The average percent of particles in the range of 150 µm - 300 µm was 29.3%. The average percent of particles in the range of 75 µm - 150 µm was 29.3%. The average percent of particles in the range of 45 µm - 75 µm was 22.6%. The average percent of particles in the range of 32 µm - 45 µm was 5.5%. The average percent of particles smaller than 32 µm was 0.5%.
- Executive summary:
A known weight of the test substance was passed through six sieves with successively smaller mesh sizes. Specific mesh sizes were selected such that the first sieve allowed most or all of the material to pass through; the next four sieves allowed some of the material through while blocking some. The smallest sieve was small enough to block most or all of the material. The exact mesh sieve size numbers used were 20, 45, 50, 100, 200, and 400. Sieve openings were 850 µm, 300 µm, 150 µm, 75 µm, 45 µm and 32 µm, respectively. Each sieve was individually weighed and the weight recorded. The sieves were stacked from largest mesh (top) to smallest (bottom). A pan capable of holding and recovering material passing through the bottom sieve was placed beneath the smallest sieve. For each replicate, approximately 20 grams of test substance was weighed and placed on the largest sieve. Soft aggregates were broken up by gentle brushing, ensuring that no hard particles were crushed. Each sieve was agitated by sieve vibrator for 5 minutes until no test material or only an insignificant amount passed through the sieve. After this requirement was met for each sieve in the series, individual sieves were weighed with the retained sample and the first receiver pan and the final weights recorded. Duplicate test substance measurements were used to calculate the assay results. Precision (repeatability) was evaluated by duplicate measurements. The average percent of particles larger than 850 µm was 1.5%. The average percent of particles in the range of 300 µm - 850 µm was 11.2%. The average percent of particles in the range of 150 µm - 300 µm was 29.3%. The average percent of particles in the range of 75 µm - 150 µm was 29.3%. The average percent of particles in the range of 45 µm - 75 µm was 22.6%. The average percent of particles in the range of 32 µm - 45 µm was 5.5%. The average percent of particles smaller than 32 µm was 0.5%.
Reference
Description of key information
OECD Guideline 110
Additional information
The average percent of particles larger than 850 µm was 1.5%. The average percent of particles in the range of 300 µm - 850 µm was 11.2%. The average percent of particles in the range of 150 µm - 300 µm was 29.3%. The average percent of particles in the range of 75 µm - 150 µm was 29.3%. The average percent of particles in the range of 45 µm - 75 µm was 22.6%. The average percent of particles in the range of 32 µm - 45 µm was 5.5%. The average percent of particles smaller than 32 µm was 0.5%.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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