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Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
17 Mar 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study with GLP

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report Date:
2015

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Qualifier:
according to
Guideline:
other: CIPAC, Physico-chemical Methods for Technical nd Formulated Pesticides, MT 187 Particle size analysis by laser diffraction
GLP compliance:
yes (incl. certificate)
Remarks:
Ministry of Health, D.G. for health prevention office VI, Firmato digitalmente da Franesco De Biasio.
Type of distribution:
volumetric distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
- Name of test material (as cited in study report): Sulfonium, tris(4-chlorophenyl)-, salt with 5-benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid (1:1)
- Lot/batch No.:14-121
- Expiration date of the batch:01.06.2016
- Storage condition of test material: at room temperature protected from light

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D10
Mean:
117 µm
Percentile:
D50
Mean:
241 µm
Percentile:
D90
Mean:
400 µm

Any other information on results incl. tables

Results

The interpolated results are expressed as percent of the total results under that size; this value is known as percentile.

The results in Table 1 show the maximum size (in µm) for 10% (Dv 10), 50% (Dv 50), 90% (Dv 90) of the particles, the percentage with a volume under 50 µm and a volume above 75 µm.

The 50% volume percentile is also known as the media of the volume distribution (in bold).

 

Sulfonium, tris(4-chlorophenyl)-, salt with 5-benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid (1:1): particle size distribution by laser diffraction

Test no.

Dv 10 (µm)

Dv 50 (µm)

Dv 90 (µm)

% volume under 50 µm

% volume under 75 µm

1

117

241

400

2.12

95.57

2

118

240

398

2.03

95.67

3

117

240

401

2.03

95.63

Average

117

241

400

2.06

95.6

 

Conclusions

From the experimental obtained data according to CIPAC method MT 187 and OECD guideline No. 110, it can be concluded that the particle size distribution of the test item Sulfonium, tris(4-chlorophenyl)-, salt with 5-benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid (1:1) is as follows: 2.06% of the test item presents a particle size lower than 50 µm, 95.6 % of the test item presents a particle size above 75 µm and the media of the volume distribution is 241 µm.

Applicant's summary and conclusion