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Diss Factsheets
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EC number: 201-172-1 | CAS number: 79-05-0
- 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:
- 2018-11-20 to 2019-01-10
- 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)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: Particle Size Distribution (CIPAC MT 59)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- sieving
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
- Key result
- Percentile:
- D50
- Mean:
- 1 131 µm
- St. dev.:
- 0
- Percentile:
- D10
- Mean:
- 386 µm
- St. dev.:
- 0
- Percentile:
- D90
- Mean:
- 3 959 µm
- St. dev.:
- 0
- Conclusions:
- The median particle size of the test item was determined by laser diffraction measurement to be D50 = 1131 µm.
- Executive summary:
A study was conducted according to OECD TG 110 and CIPAC MT 59 in order to determine the particle size distribution of the test item. The particle size distribution was determined sieve analysis. The particle size distribution is determined using sieves with different mesh sizes. The sieves are stacked in order of aperture size with the largest at the top and the receiver pan at the bottom. The test item was filled into the sieve with the largest size. The tower was than shaken using a sifting machine for 5 minutes with an amplitude of 100 %. The residue on each sieve was then weighed. The D10, D50, and D90 value was determine by applying a linear equation on the two points closest to the 10 %, 50 %, or 90 % mark on the cumulative distribution. The median particle size D50 of test item was determined to be 1131 μm.
Reference
Particle Size Distribution
Results of the sieving analysis
Sieve size | Residue on sieve | Mass % | Total % |
16,000 | 2.1 | 0.93 | 100.00 |
11,200 | 6.8 | 3.01 | 99.07 |
8,000 | 4.0 | 1.77 | 96.05 |
5,600 | 9.2 | 4.08 | 94.28 |
4,000 | 13.6 | 6.03 | 90.20 |
2,800 | 26.5 | 11.75 | 84.18 |
2,000 | 30.6 | 13.56 | 72.43 |
1,400 | 29.7 | 13.16 | 58.87 |
1,000 | 28.5 | 12.63 | 45.70 |
710 | 35.3 | 15.65 | 33.07 |
500 | 21.3 | 9.44 | 17.42 |
355 | 10.5 | 4.65 | 7.98 |
250 | 4.9 | 2.17 | 3.32 |
180 | 1.5 | 0.66 | 1.15 |
125 | 0.7 | 0.31 | 0.49 |
90 | 0.3 | 0.13 | 0.18 |
< 90* | 0.1 | 0.02 | 0.04 |
*bottom tray
The D10, D50, and D90 value was determine by applying a linear equation on the two points closest to the 10 %, 50 %, or 90 % mark on the cumulative distribution. The equation was solved for the corresponding value.
Results for D10, D50, and D90 value
D10: | 386 µm |
D50: | 1131 µm |
D90: | 3959 µm |
Description of key information
The median particle size of the test item was determined by laser diffraction measurement to be D50 = 1131 µm (reference 4.5-1).
Additional information
A study was conducted according to OECD TG 110 and CIPAC MT 59 in order to determine the particle size distribution of the test item. The particle size distribution was determined sieve analysis. The particle size distribution is determined using sieves with different mesh sizes. The sieves are stacked in order of aperture size with the largest at the top and the receiver pan at the bottom. The test item was filled into the sieve with the largest size. The tower was than shaken using a sifting machine for 5 minutes with an amplitude of 100 %. The residue on each sieve was then weighed. The D10, D50, and D90 value was determine by applying a linear equation on the two points closest to the 10 %, 50 %, or 90 % mark on the cumulative distribution. The median particle size D50 of test item was determined to be 1131 μm.
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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