Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Particle size distribution (Granulometry)

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
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 B: Fibre Length and Diameter Distributions
Version / remarks:
1981
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
other: sieving followed by scanning electron microscopy
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Mass median aerodynamic diameter:
5.3 µm
No.:
#1
Size:
< 4 µm
Distribution:
0.32 %
Remarks on result:
other: spherical volume
No.:
#2
Size:
>= 4 - < 10 µm
Distribution:
6.42 %
Remarks on result:
other: spherical volume
No.:
#3
Size:
>= 10 - < 100 µm
Distribution:
93.26 %
Remarks on result:
other: spherical volume
No.:
#4
Size:
> 100 µm
Distribution:
0 %
Remarks on result:
other: spherical volume

Accounting based on total sample weight

   Particle size (µm)  Spherical volume (%)
 Mass fraction >100  97.86 
 Sieve fraction  >100 0.00 
 Total (>100µm)   97.86 
  Sieve fraction 10 -100 (inhalable)  2.00 
  Sieve fraction 4 -10 (thoraic)  0.14 
  Sieve fraction <4 (respirable)  0.01 
Conclusions:
The MMAD (Mass Median Aerodynamic Diameter < 100μm) of the test item has a value of 5.30 μm as spherical particles.
Executive summary:

The sample is fractionated by a 100 μm sieve and tested by scanning electron microscopy (SEM). The fraction < 100 μm is gushed to carbon pads and sputtered with gold.

The particle classification (mean diameter): 0.4-0.5, 0.5-1.0, 1-2, 2-3, 3-5 and 5-100 μm, additional <0.4 and >100μm is reported.

The mass fraction is calculated for spherical and cubical volume in classes of particle diameter <4 μm, 4-10 μm, 10-100 μm and > 100 μm.

Result: Sieve Fraction

weighted sample: 1.5459 g

weight fraction <100 μm: 0.0331 g

mass fraction <100 μm: 2.14 %

The MMAD (Mass Median Aerodynamic Diameter < 100μm) of the test item has a value of 5.30 μm as spherical particles.

Description of key information

The sample is fractionated by a 100 μm sieve and tested by scanning electron microscopy (SEM). The fraction < 100 μm is gushed to carbon pads and sputtered with gold.

The particle classification (mean diameter): 0.4-0.5, 0.5-1.0, 1-2, 2-3, 3-5 and 5-100 μm, additional <0.4 and >100μm is reported.

The mass fraction is calculated for spherical and cubical volume in classes of particle diameter <4 μm, 4-10 μm, 10-100 μm and > 100 μm.

Result: Sieve Fraction

weighted sample: 1.5459 g

weight fraction <100 μm: 0.0331 g

mass fraction <100 μm: 2.14 %

The MMAD (Mass Median Aerodynamic Diameter < 100μm) of the test item has a value of 5.30 μm as spherical particles.

Additional information