Registration Dossier

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:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
no guideline followed
Principles of method if other than guideline:
The calcium phosphite is poured on the top of a tower of stacked sieves (the smallest at the bottom). When the vibrations begin, the particles go down through the sieves until reaching a mesh smaller than their size.
GLP compliance:
no
Type of method:
sieving
Type of particle tested:
primary particle
Type of distribution:
mass based distribution
No.:
#1
Size:
>= 500 µm
Distribution:
>= 0.8 - <= 1.2 %
No.:
#2
Size:
>= 250 - < 500 µm
Distribution:
>= 62.4 - <= 70.4 %
No.:
#3
Size:
>= 150 - < 250 µm
Distribution:
>= 26.9 - <= 32.4 %
No.:
#4
Size:
>= 75 - < 150 µm
Distribution:
>= 1.5 - <= 4.3 %
No.:
#5
Size:
< 75 µm
Distribution:
>= 0 - <= 0.1 %

Particle size, microns

<75

75-150

150-250

250-500

>500

0.1

4.3

32.4

62.4

0.8

0.0

1.5

26.9

70.4

1.2
Conclusions:
The mass-based median particle size is between 250 and 500 µm.

Description of key information

The mass-based median particle size is between 250 and 500 µm.

Additional information