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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:
1999-03-15 - 1999-03-17
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
equivalent or similar to
Guideline:
other: OECD, 1981: Guideline for Testing of Chemicals. Section 1: Physical-Chemical Properties.
GLP compliance:
no
Type of method:
sieving
No.:
#1
Size:
>= 0 - <= 0.053 mm
Distribution:
0.14 %
No.:
#2
Size:
>= 0.053 - <= 0.106 mm
Distribution:
7.19 %
No.:
#3
Size:
>= 0.106 - <= 0.25 mm
Distribution:
21.94 %
No.:
#4
Size:
>= 0.25 - <= 0.5 mm
Distribution:
30.74 %
No.:
#5
Size:
>= 0.5 - <= 1.19 mm
Distribution:
39.49 %
No.:
#6
Size:
>= 1.19 mm
Distribution:
0.54 %

Table 1. Weight of the test substance in each sieve after vibration for 20 minutes.

Sieve (mesh)

(g)*

Rep. 1 Rep. 2
16 0.05 0.06
32 3.39 3.97
60 3.09 3.06
150 2.21 2.18
270 0.71 0.73
Container 0.01 0.02
* Initial weight:

 Replicates 1 = 10.0002 g

Replicates 2 = 10.0002 g

Table 2. Granulometric distribution of the test substance by size and percentage of retention in each sieve. mean of two replicates.

Sieve (mesh) Sieve (mm) Retention (%)
16 1.190 0.54
32 0.500 39.49
60 0.250 30.74
150 0.106 21.94
270 0.053 7.19
Container Container 0.14
Conclusions:
Ferbam presented the following particle size distribution: 0.54% were > 1.190mm, 39.49% were between 1.190 and 0.500mm, 30.74% were between 0.500 and 0.250mm, 21.94% were between 0.250 and 0.106mm, 7.19% were between 0.106 and 0.053mm and 0.14% were < 0.053mm.
Executive summary:

This study was conducted to determine the particle size distribution of Ferbam. This assay was carried out by sieving methodology, using sieves of 16, 32, 60, 150 and 270 mesh. 100 g of homogenized sample of Ferbam were transferred, to a sieve system, in two replicates. After shaking for 20 minutes, samples were removed from the sieves, weighted and the granulometric distribution determined by size. According to the results the product Ferbam presented the following particle size distribution: 0.54% were > 1.190mm, 39.49% were between 1.190 and 0.500mm, 30.74% were between 0.500 and 0.250mm, 21.94% were between 0.250 and 0.106mm, 7.19% were between 0.106 and 0.053mm and 0.14% were < 0.053mm.

Description of key information

The particle size distribution was conducted eqivalent or similar to OECD, 1981: Guideline for Testing of Chemicals. Section 1: Physical-Chemical Properties.

Ferbam presented the following particle size distribution: 0.54% were > 1.190mm, 39.49% were between 1.190 and 0.500mm, 30.74% were between 0.500 and 0.250mm, 21.94% were between 0.250 and 0.106mm, 7.19% were between 0.106 and 0.053mm and 0.14% were < 0.053mm.

Additional information

This study was conducted to determine the particle size distribution of Ferbam. This assay was carried out by sieving methodology, using sieves of 16, 32, 60, 150 and 270 mesh. 100 g of homogenized sample of Ferbam were transferred, to a sieve system, in two replicates. After shaking for 20 minutes, samples were removed from the sieves, weighted and the granulometric distribution determined by size. According to the results the product Ferbam presented the following particle size distribution: 0.54% were > 1.190mm, 39.49% were between 1.190 and 0.500mm, 30.74% were between 0.500 and 0.250mm, 21.94% were between 0.250 and 0.106mm, 7.19% were between 0.106 and 0.053mm and 0.14% were < 0.053mm.