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Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2011
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: GLP guideline study with acceptable restrictions.
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Version / remarks:
Method B
GLP compliance:
no
Type of method:
determination of fibre length and diameter distributions
Type of distribution:
mass based distribution
Percentile:
D50
Mean:
13.2 µm
Remarks on result:
other: Spherical volume: 13.2µm; Cubical volume: 13.0µm

Result sieve fraction:

weighted sample: 4.0507g

weight fraction <100µm: 0.0168g

mass fraction <100µm: 0.41%

Result Particle size distribution: (Sieve fraction <100µm)

Particles with diameter greater than 100μm are due to their aspect ratios up to 1.29.

 Counts  1195  
   Mean Diameter  Aspect Ratio
 Minimum  1.26µm  1.00
 Maximum  149.60µm  22.00
 Arithmetic mean 9.08µm  1.91
 Median  4.02µm  1.66
 Standard deviation  18.19µm  1.23

Result Mass fraction (calculated): (Sieve fraction < 100µm)

 Particle size  Spherical volume  Cubical volume
 < 4µm  0.023%  0.019%
 4 -10µm  0.24%  0.19%
 10 -100µm  21.99%  20.36%
 >100µm  77.75%  79.43%
 Median (diameter)  13.2µm  13.0µm

Conclusion: All particles with a mean diameter less than100μm have a mass fraction of 0.41%. 0.023% / 0.019% (spherical/ cubical) particles of this mass fraction have a mean diameter less than 4μm.

Conclusions:
All particles with a mean diameter less than 100 μm have a mass fraction of 0,41 %.
0,023 % / 0,019 % (spherical/ cubical) particles of this mass fraction have a mean diameter less than 4 μm.
Executive summary:

The particle size distribution of triphenyl phosphate was evaluated accoring to OECD TG 110, Method B: Particle Size Distribution/Fibre Length and Diameter Distributions.

All particles with a mean diameter less than100 μm have a mass fraction of 0.41 %. 0.023 % / 0.019 % (spherical/ cubical) particles of this mass fraction have a mean diameter less than 4μm. The mass mediam diameter is 13.2 µm (spherical volume) and 13.0 µm (cubial volume).

Description of key information

All particles with a mean diameter less than 100 μm have a mass fraction of 0,41 %.
0,023 % / 0,019 % (spherical/ cubical) particles of this mass fraction have a mean diameter less than 4 μm.

Additional information