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Physical & Chemical properties

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:
2018
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 A: Particle Size Distribution (effective hydrodynamic radius)
Deviations:
no
GLP compliance:
yes
Type of method:
sedimentation (gravitational settling)
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: Batch 20180329 (Source Lead)
- Expiration date of the lot/batch: March 2019
- Purity test date: March 2018

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: romm temperature 20 +/-10°C in darkness
- Stability under test conditions: stable
No.:
#1
Size:
ca. 710 µm
Distribution:
ca. 1.1 %
No.:
#2
Size:
ca. 500 µm
Distribution:
ca. 0.1 %
No.:
#3
Size:
ca. 355 µm
Distribution:
ca. 0.1 %
No.:
#4
Size:
ca. 250 µm
Distribution:
ca. 0.1 %
No.:
#5
Size:
ca. 180 µm
Distribution:
ca. 0.3 %
No.:
#6
Size:
ca. 125 µm
Distribution:
ca. 5.3 %
No.:
#7
Size:
ca. 90 µm
Distribution:
ca. 39.6 %
No.:
#8
Size:
ca. 63 µm
Distribution:
ca. 38.7 %
No.:
#9
Size:
ca. 45 µm
Distribution:
ca. 14 %
No.:
#10
Size:
ca. 32 µm
Distribution:
ca. 0.8 %
No.:
#10
Size:
ca. 25 µm
Distribution:
ca. 0 %

Table : principal Sieving

Relative humidity : from 54.2% to 57.7%

Temperature : from 21.1°C to 22.4°C

Mass of test item used : 19.94 g

Test sieve  Mass of residue (g)  Percentage of residue (%)  Cumulated undersized particles (%)  Time of mechanical sieving (min)  Time of manual sieving (min) 
 710 µm 0.21  1.1  98.8  30  2 
 500 µm 0.01  0.1  98.8  30  2 
 355 µm 0.02  0.1  98.7  30  2 
 250 µm 0.01  0.1  98.6  30  1 
 180 µm 0.05  0.3  98.4  30  2 
 125 µm 1.04  5.3  93.1  30  5 
 90 µm 7.78  39.6  53.4  30  14 
 63 µm 7.60  38.7  14.7  30  9 
 45 µm 2.74  14.0  0.8  30  2 
 32 µm 0.15  0.8  0.0  30  1 
 25 µm 0.00  0.0  0.0  30  / 
 Receiver pan 0.00  0.0  0.0  30  / 

The loss of mass was 1.7%

Conclusions:
After the preliminary test, it was shown that the majority of the particles (99.9%) was between the receiver pan and 1 mm. So, the principal sieving was made lower than 1 mm.
After the main test, it was shown that the majority of the particles (92.3%) was between 45 μm and 125 μm.
Executive summary:

In compliance with OECD Guideline n°110, it was shown, for 4 -phnexyphenol, that the majority of the particles size (92.3%) was between 45 μm and 125 μm and the D50 is c.a. 90 µm.

Description of key information

On the basis of OECD Test n°110, the majority of the particles size (92.3%) was between 45 μm and 125 μm and the D50 is c.a. 90 µm.

Additional information