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Particle size distribution (Granulometry)

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Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19 October 2009
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: measured data from company
Principles of method if other than guideline:
laser diffraction method, Mastersizer 2000, Ver. 5.54
GLP compliance:
not specified
Type of method:
Laser scattering/diffraction
Type of particle tested:
other: see Remarks
Remarks:
powder
Type of distribution:
volumetric distribution
Remarks on result:
other: see Remarks
Remarks:
see below results
Key result
Percentile:
D10
Mean:
ca. 30.178 µm
Remarks on result:
other: see Remarks
Remarks:
No information of SD is given.
Key result
Percentile:
D50
Mean:
ca. 85.273 µm
Remarks on result:
other: see Remarks
Remarks:
No information of SD is given.
Key result
Percentile:
D90
Mean:
ca. 187.823 µm
Remarks on result:
other: see Remarks
Remarks:
No information of SD is given.
No.:
#1
Size:
1.905 µm
Distribution:
0.06 %
No.:
#2
Size:
10 µm
Distribution:
0.42 %
No.:
#3
Size:
22.909 µm
Distribution:
1.59 %
No.:
#4
Size:
30.2 µm
Distribution:
2.79 %
No.:
#5
Size:
52.481 µm
Distribution:
6.04 %
No.:
#6
Size:
91.201 µm
Distribution:
7.84 %
No.:
#7
Size:
104.713 µm
Distribution:
7.72 %
No.:
#8
Size:
120.226 µm
Distribution:
7.31 %
No.:
#9
Size:
208.93 µm
Distribution:
3.3 %
No.:
#10
Size:
316.228 µm
Distribution:
0.05 %

Results of particle size distribution are averages of 3 measurements.

Concentration: 0.0047 %Vol,

Specific surface area: 0.115 m2/g,

Span: 1.849,

Surface weighted mean D[3,2]: 52.013 µm,

Uniformity: 0.571,

Vol. weighted mean D[4,3]: 98.487 µm,

d(0.1): 30.178 µm ( = D10),

d(o.5): 85.273 µm ( = D50),

d(0.9): 187.823 µm ( = D90).

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
August 2009
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: measured data from company
Principles of method if other than guideline:
no method given
GLP compliance:
not specified
Type of method:
Laser scattering/diffraction
Type of particle tested:
other: see Remarks
Remarks:
powder
Type of distribution:
volumetric distribution
Remarks on result:
other: see Remarks
Remarks:
see below results
No.:
#1
Size:
> 1 600 µm
Distribution:
<= 1 %
Remarks on result:
other: see Remarks
Remarks:
granules, molar ratio SiO2/ Na2O = 2.0
No.:
#2
Size:
> 1 180 µm
Distribution:
<= 20 %
Remarks on result:
other: see Remarks
Remarks:
granules, molar ratio SiO2/ Na2O = 2.0
No.:
#3
Size:
< 250 µm
Distribution:
<= 5 %
Remarks on result:
other: see Remarks
Remarks:
granules, molar ratio SiO2/ Na2O = 2.0
No.:
#4
Size:
> 1 600 µm
Distribution:
<= 1 %
Remarks on result:
other:
Remarks:
granules, molar ratio SiO2/ Na2O = 2.65
No.:
#5
Size:
> 1 180 µm
Distribution:
<= 20 %
Remarks on result:
other: see Remarks
Remarks:
granules, molar ratio SiO2/ Na2O = 2.65
No.:
#6
Size:
< 250 µm
Distribution:
<= 10 %
Remarks on result:
other: see Remarks
Remarks:
granules, molar ratio SiO2/ Na2O = 2.65
No.:
#7
Size:
> 400 µm
Distribution:
<= 3 %
Remarks on result:
other: see Remarks
Remarks:
powders, molar ratio SiO2/ Na2O = 2.0
No.:
#8
Size:
>= 250 µm
Distribution:
>= 40 - <= 60 %
Remarks on result:
other: see Remarks
Remarks:
powders, molar ratio SiO2/ Na2O = 2.0
No.:
#9
Size:
> 100 µm
Distribution:
>= 80 - <= 95 %
Remarks on result:
other: see Remarks
Remarks:
molar ratio SiO2/ Na2O = 2.0
No.:
#10
Size:
> 250 µm
Distribution:
<= 10 %
Remarks on result:
other:
Remarks:
powders, molar ratio SiO2/ Na2O = 2.65
Size:
> 100 µm
Distribution:
>= 35 - <= 55 %
Remarks on result:
other: see Remarks
Remarks:
powders, molar ratio SiO2/ Na2O = 2.65
Size:
< 63 µm
Distribution:
<= 35 %
Remarks on result:
other: see Remarks
Remarks:
powders, molar ratio SiO2/ Na2O = 2.65
Size:
> 250 µm
Distribution:
<= 20 %
Remarks on result:
other: see Remarks
Remarks:
powders, molar ratio SiO2/ Na2O = 3.35
Size:
< 63 µm
Distribution:
<= 40 %
Remarks on result:
other: see Remarks
Remarks:
powders, molar ratio SiO2/ Na2O = 3.35

 

2.0 Molar Ratio

2.65 Molar Ratio

 

Granules

Granules

> 1600 µm (%)

<= 1

<= 1

> 1180 µm (%)

<= 20

<= 20

< 250 µm (%)

<= 5

<= 10

Mean particle size (µm)

700

700

 

2.0 Molar Ratio

2.65 Molar Ratio

3.35 Molar Ratio

 

Powder

Powder

Powder

> 400 µm (%)

<= 3

 

 

> 250 µm (%)

40 - 60

<= 10

<= 20

> 100 µm (%)

80 - 95

35 - 55

 

< 63 µm (%)

 

<= 35

<= 40

Mean particle size (µm)

250

90

175

Endpoint:
particle size distribution (granulometry)
Type of information:
other: peer-reviewed data base
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: peer-reviewed data base
Principles of method if other than guideline:
peer-reviewed data base
GLP compliance:
no
Type of method:
other: see Remarks
Remarks:
This has not been indicated.
Type of particle tested:
other: see Remarks
Remarks:
powder
Type of distribution:
other: This has not been indicated.
Remarks on result:
other: see Remarks
Remarks:
see below results
Key result
Percentile:
other: 96-98%
Mean:
>= 200 - <= 1 250 µm
Remarks on result:
other: see Remarks
Remarks:
No information of SD is given.

In granular products 96% - 98% of the particles are between 200 - 1250 microm.

Description of key information

Powder: 0.02 - 2000 µm
Granule: 200 -1250 µm

Particle size distribution on powders:

D10 = 30.178 µm

D50 = 85.273 µm

D90 = 187.823 µm

Additional information