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Physical & Chemical properties

Particle size distribution (Granulometry)

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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:
guideline study with acceptable restrictions
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
other: ISO 13320-1
GLP compliance:
no
Type of method:
other: not specified
Type of distribution:
volumetric distribution
Percentile:
D10
Mean:
93.754 µm
St. dev.:
1
Remarks on result:
other: no std dev info available
Percentile:
D50
Mean:
583.221 µm
St. dev.:
1
Remarks on result:
other: no std dev info available
Percentile:
D90
Mean:
1 359.628 µm
St. dev.:
1
Remarks on result:
other: no std dev info available

No further information.

Conclusions:
The particle size distribution of the four preparations was measured to be D10 = 93.574 µm, D50 = 583.221 µm and D90 = 1359.628 µm.
Executive summary:

The particle size distribution of four calcium fluoride preparations were measured.

The mean distribution was D10 = 93.574 µm, D50 = 583.221 µm and D90 = 1359.628 µm.

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:
comparable to guideline study
Remarks:
Modern study
Reason / purpose:
reference to same study
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
GLP compliance:
no
Type of method:
other: not specified
Type of distribution:
volumetric distribution
Percentile:
D10
Mean:
1.83 µm
St. dev.:
1
Remarks on result:
other: std dev info not available
Percentile:
D50
Mean:
6.16 µm
St. dev.:
1
Remarks on result:
other: no std dev info available
Percentile:
D90
Mean:
16.67 µm
St. dev.:
1
Remarks on result:
other: no std dev info available

No further information.

Conclusions:
The particle size distribution was measured to be D10 = 1.83 µm, D50 = 6.16 µm and D90 = 16.67 µm.
Executive summary:

The particle size distribution was measured for a sample of calcium fluoride. The results were as follows: D10 = 1.83 µm, D50 = 6.16 µm and D90 = 16.67 µm.

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:
guideline study
Remarks:
Modern study performed to current guidelines.
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
other: ISO 565:1990
GLP compliance:
no
Type of method:
sieving
Type of distribution:
volumetric distribution
Percentile:
D10
Mean:
4.43 µm
St. dev.:
1
Remarks on result:
other: no std dev info available
Percentile:
D50
Mean:
15.096 µm
St. dev.:
1
Remarks on result:
other: no std dev info available
Percentile:
D90
Mean:
45.848 µm
St. dev.:
1
Remarks on result:
other: no std dev info available

Size (µm)

Volume in %

Size (µm)

Volume in %

0.500

-

45.000

12.52

1.000

0.38

63.000

6.25

2.000

1.25

75.000

1.75

5.000

10.98

105.000

1.54

10.000

21.41

150.000

0.52

20.000

27.36

250.000

0.39

30.000

15.69

>250.000

0

Conclusions:
The median diameter was determined to be 15.096 µm.
Executive summary:

The particle size distribution was determined for a sample of calcium fluoride. The D10, D50 and D90 were determined to be 4.43, 15.096, 45.848 µm respectively.

Description of key information

Data are provided for a number of sources of calcium fluoride. The median diameter (D50) was found to be in the range of 6.16 - 583.22 µm.

The 3 key studies for this endpoint are the data provided by CILAS, BASF and Derivados Del Fluor. The other 3 results (provided by Alufluor, CILAS and Prayon) are used as supporting studies.

Additional information