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EC number: 234-371-7 | CAS number: 11128-29-3
- 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:
- 21/06/2010 to 22/06/2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- other: BS ISO 13320-1: 1999
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 187
- Deviations:
- not specified
- GLP compliance:
- yes
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- mass based distribution
- Percentile:
- D10
- Mean:
- 352.094 µm
- St. dev.:
- 6.09
- Percentile:
- D50
- Mean:
- 568.631 µm
- St. dev.:
- 7.33
- Percentile:
- D90
- Mean:
- 909.937 µm
- St. dev.:
- 12.89
- Conclusions:
- The d50 was shown to be 568.631 μm. Coefficient of variation for d50 was less than 3 %; d10 and d90 were less than 5 %. This repeatability of the characteristic particles in the size distribution were within the aceptable limits as per the BS ISO 13320 -1 test standard.
- Executive summary:
The particle size distribution study was performed according to BS ISO 13320-1: 1999, CIPAC MT 187 and OECD guideline 110 under GLP compliance. Laser diffraction method was used. The d50 was shown to be 568.631 μm. Coefficient of variation for d50 was less than 3 %; d10 and d90 were less than 5 %. This repeatability of the characteristic particles in the size distribution were within the aceptable limits as per the BS ISO 13320 -1 test standard.
Reference
Standard visual observation: Sample observed to be a coarse free flowing powder
Observation at 100 x magnifiation: The particles appeared to be irregular shaped crystals. The smallest particle size was approximately 20 μm and the largest size was approximately 768 μm.
Observation at 400 x magnification: The sample was made up of single crystalline particles.
Manual sieve analysis results:
Sieve size (μm) |
Sieve weight (g) |
Sieve + powder weight (g) |
Powder weight (g) |
% by weight |
> 2000 |
325.8 |
325.9 |
0.1 |
0.1 |
< 2000 |
246 |
345.9 |
99.9 |
99.9 |
TOTALS |
100 |
100 |
99.9 % by weight < 2000 μm.
Full test results:
|
Run 1 |
Run 2 |
Run 3 |
Run 4 |
Run 5 |
** Average |
Volume weighted mean |
599.609 |
589.285 |
603.467 |
610.529 |
613.860 |
603.350 |
Median (d50) |
572.124 |
554.417 |
569.622 |
572.028 |
575.130 |
568.631 |
Mode (μm) |
584.028 |
555.683 |
573.231 |
569.358 |
572.047 |
570.741 |
*MMAD |
739.947 |
716.464 |
736.114 |
739.223 |
743.232 |
734.833 |
10 % of material is > |
346.341 |
344.052 |
352.866 |
357.332 |
359.813 |
352.094 |
50 % of material is > |
572.124 |
554.417 |
569.622 |
572.028 |
575.130 |
568.631 |
90 % of material is > |
906.855 |
888.631 |
907.866 |
920.856 |
925.540 |
909.937 |
All results are in μm
* Mass Mean Aerodynamic Diameter
** Average result is calculated from the entirety of data captured in each run and is not a simple arithmetic mean.
0 % by volume of sample was seen to be < 10.00 μm.
Standard deviation results:
Run No. |
1 |
2 |
3 |
4 |
5 |
STDVP |
% STDV |
d10 |
346.341 |
344.052 |
352.866 |
357.332 |
359.813 |
6.09 |
1.73 |
d50 |
572.124 |
554.417 |
569.622 |
572.028 |
575.130 |
7.33 |
1.29 |
d90 |
906.588 |
888.631 |
907.866 |
920.856 |
925.540 |
12.89 |
1.42 |
d15.78 |
386.778 |
379.651 |
389.637 |
393.463 |
396.008 |
5.69 |
1.46 |
GSD |
1.479 |
1.40 |
1.462 |
1.454 |
1.452 |
0.01 |
0.65 |
MMAD |
739.347 |
716.363 |
736.114 |
739.223 |
743.232 |
9.48 |
1.29 |
GSD = Geometric standard deviation.
0 % by volume of sample was seen to be < 10.0 μm.
Coefficient of variation for d50 was less than 3 %; d10 and d90 were less than 5 %. This repeatability of the characteristic particles in the size distribution were within the aceptable limits as per the BS ISO 13320 -1 test standard.
Description of key information
The particle size distribution study was performed according to BS ISO 13320-1: 1999, CIPAC MT 187 and OECD guideline 110 under GLP compliance. Laser diffraction method was used. The d50 was shown to be 568.631 μm. Coefficient of variation for d50 was less than 3 %; d10 and d90 were less than 5 %. This repeatability of the characteristic particles in the size distribution were within the aceptable limits as per the BS ISO 13320 -1 test standard.
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