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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2009-11-17
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Remarks:
In-house data of producer. Study performed according to internal quality control SOP.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: SOP : SN107-83 Laser Diffraction Particle Size Measurement – Malvern Mastersizer S
Deviations:
no
Principles of method if other than guideline:
The Malvern Mastersizer S is a laser diffraction particle size analyser and uses Mie theory to convert a diffraction pattern into the size distribution of a measured material. During the laser diffraction measurement, particles are passed through a focused laser beam. These particles scatter light at an angle that is inversely proportional to their size. The angular intensity of the scattered light is then measured by a series of photosensitive detectors. The number and positioning of these detectors in the Mastersizer 2000 has been optimized to achieve maximum resolution across a broad range of sizes. The map of scattering intensity versus angle is the primary source of information used to calculate the particle size. The scattering of particles is accurately predicted by the Mie scattering model. This model is rigorously applied within the Mastersizer 2000 software, allowing accurate sizing across the widest possible dynamic range
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of distribution:
other: Laser diffraction particle size analysis

Test material

Constituent 1
Chemical structure
Reference substance name:
boron nitride (cubic)
EC Number:
701-307-9
Cas Number:
10043-11-5
Molecular formula:
BN
IUPAC Name:
boron nitride (cubic)
Test material form:
solid: crystalline

Results and discussion

Particle sizeopen allclose all
Percentile:
D10
Mean:
0.53 µm
St. dev.:
0
Remarks on result:
other:
Remarks:
The volume mean diameter of the particles has been determined.(migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.)
Percentile:
D50
Mean:
1.1 µm
St. dev.:
0
Remarks on result:
other:
Remarks:
The volume mean diameter of the particles has been determined.(migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.)
Percentile:
D90
Mean:
2.19 µm
St. dev.:
0
Remarks on result:
other:
Remarks:
The volume mean diameter of the particles has been determined.(migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.)
Percentile:
D99
Mean:
3.24 µm
St. dev.:
0
Remarks on result:
other:
Remarks:
The volume mean diameter of the particles has been determined.(migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.)
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
<= 0.239 µm
Distribution:
<= 0 %
No.:
#2
Size:
> 4.48 µm
Distribution:
<= 0 %

Applicant's summary and conclusion

Conclusions:
• The one percent cut-off point, one percent of the particle size distribution is below 0.35 microns. • The ten percent cut-off point, ten percent of the particle size distribution is below 0.53 microns.• The volume median diameter, fifty percent of the particle size distribution is above 1.10 microns and fifty percent is below 1.10 microns.• The ninety percent cut-off point, ninety percent of the particle size distribution is below 2.19 microns.• The ninety nine percent cut-off point, ninety nine percent of the particle size distribution is below 3.24 microns.• The surface area mean diameter of the particles is 1.25 microns.• The volume mean diameter of the particles is 0.95 microns.