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EC number: 209-529-3 | CAS number: 584-08-7
- 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:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 13321 and USP <429>
- Principles of method if other than guideline:
- Laser diffraction method. The OECD Guideline 110 can only be applied to water-insoluble substances. Since the test item is soluble in water the laser diffraction method with dispersion of the dry powder in an air stream was chosen as an alternative. Although the particle size distribution is measured in an air stream, the measured particle sizes do not represent „aerodynamic“ diameters, but rather „geometric“ diameters.
- GLP compliance:
- yes (incl. QA statement)
- Type of distribution:
- volumetric distribution
- Percentile:
- D10
- Mean:
- 3.5 µm
- Remarks on result:
- other: standard deviation: 3.316 - 3.606 µm
- Percentile:
- D50
- Mean:
- 16.6 µm
- Remarks on result:
- other: standard deviation: 55.47 - 60.52 µm
- Percentile:
- D90
- Mean:
- 58.6 µm
- Remarks on result:
- other: standard deviation: 16.37 - 16.93 µm
- No.:
- #1
- Size:
- > 200 µm
- Distribution:
- 0 %
- Remarks on result:
- other: < 2 µm: 11.8%
- No.:
- #2
- Size:
- > 200 µm
- Distribution:
- 0 %
- Remarks on result:
- other: < 2 µm: 11.5 %
- No.:
- #3
- Size:
- > 200 µm
- Distribution:
- 0 %
- Remarks on result:
- other: < 2 µm: 11.0 %
- Conclusions:
- The particle size distribution of potassium carbonate powder was determined by the laser diffraction method with dry dispersion according to ISO 13321. Mean particle sizes were D10: 3.5 μm, D50: 16.6 μm, and D9058.6 μm. Particles with a diameter r < 2 μm were 11.4 %, with a diameter > 200 μm were 0%.
- Executive summary:
The particle size distribution of potassium carbonate powder was determined by the laser diffraction method with dry dispersion according to ISO 13321. Mean particle sizes were D10: 3.5μm, D50: 16.6μm, and D90: 58.6μm. Particles with a diameter r < 2μm were 11.4 %, with a diameter > 200μm were 0%.
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Only short abstact available
- Principles of method if other than guideline:
- Compilation of the granulometry of potassium carbonate specifications
- Remarks on result:
- other: see Any other information on results
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Only short abstract available
- Principles of method if other than guideline:
- Compilation of the granulometry of potassium carbonate specifications
- GLP compliance:
- no
- Type of method:
- sieving
- Type of distribution:
- other: sieve analysis
- Remarks on result:
- other: see Any other information on results
- Conclusions:
- the analysis where done by standard sieve analysis in the lab on three typical qualities of potassium carbonates. The type "Potash calc. gran." is the most produced type following by potas powder and potash hydrate.
Referenceopen allclose all
Table 1: Potassium carbonate POWDER PRODUCT
Particle size distribution[mm] |
Particle size distribution[mesh] |
Fraction Weight % |
<0.25 |
< 60 |
97% |
Table 2: Potassium carbonate GRANULAR PRODUCT
Particle size distribution[mm] |
Particle size distribution[mesh] |
Fraction Weight % |
< 0.25 |
<60 |
4 |
0.25 – 0.4 |
35-60 |
4 |
0.4 – 2 |
9 - 35 |
88 |
2 - 4 |
5 - 9 |
4 |
>4 |
>5 |
0 |
Table 1: Particle Size Distribution of Potash Calc. gran. (potassium carbonate)
Particle size distribution[mm] |
Fraction Weight % |
>2.000 |
max 5 |
>1.000 |
min 4 - 41 |
>0.850 |
7 - 53 |
>0.500 |
30 - 78 |
>0.250 |
60 - 92 |
>0.100 |
min 71 |
Table 2: Particle Size Distribution of Potash powder (potassium carbonate)
Particle size distribution[mm] |
Fraction Weight % |
>0.500 |
max 10 |
>0.100 |
max 20 |
>0.053 |
min 55 |
Table 3 Particle size distribution Potash hydrate (potassium carbonate hydrate*)
Particle size distribution[mm] |
Fraction Weight % |
> 2.00 |
max 3 - 5 |
> 1.4 |
max 10 - 15 |
> 1.0 |
max 35 - 40 |
> 0.25 |
min 80 - 85 |
> 0.125 |
min 90 - 95 |
* not further specified
Table 4: Sieve analyses U.S. market (Potassium Carbonate, Calc. Gran.)
Sieve |
mass fraction (%) range |
||
mesh |
mm |
min |
max |
20.00 |
0.840 |
15.0 |
30.0 |
40.00 |
0.420 |
30.0 |
40.0 |
80.00 |
0.180 |
25.0 |
35.0 |
100.0 |
0.149 |
1.0 |
3.0 |
200.0 |
0.074 |
2.0 |
4.0 |
<200 |
<0.074 |
5.0 |
10.0 |
Description of key information
For Potassium carbonate quality "potash calc. gran." the mean particle size where determined at approx. 750 µm with 60% w/w passes through; where 95% passes through at >2000 µm; and approx. 30% passes through at > 100 µm.
For potassium typ "potash carbonate powder" (only on one sample) the mean particle sizes were determined to be D10: 3.5μm D50: 16.6μm D90: 58.6μm particles with diameter r < 2μm = 11.4 %; r > 200μm 0% (laser diffraction method with dry dispersion (ISO 13321)).
Additional information
Potash calc. gran.:
For Potassium carbonate quality "potash calc. gran." the mean particle size where determined at approx. 750 µm with 60% w/w passes through; where 95% passes through at >2000 µm; and approx. 30% passes through at > 100 µm.
Other Potassium carbonate qualities (calcinated, hydrate) may show much lower fractions of small particles.
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