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Physical & Chemical properties

Particle size distribution (Granulometry)

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Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
Experimental Starting Date: 21 November 2014 Experimental Completion Date: 15 April 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

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

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
other: Determination using a procedure designed to be compatible with that given in European Commission Guidance Document EUR 20268 ‘Determination of Particle Size Distribution, Fibre Length and Diameter Distribution of Chemical Substances’, 2002.
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
sieving
Type of distribution:
mass based distribution

Test material

Constituent 1
Reference substance name:
Sulfonic acids, C16-18-alkane hydroxy and C16-18-alkene, sodium salts
EC Number:
294-430-8
EC Name:
Sulfonic acids, C16-18-alkane hydroxy and C16-18-alkene, sodium salts
Cas Number:
91722-28-0
IUPAC Name:
Sulfonic acids, C16-18-alkane hydroxy and C16-18-alkene, sodium salts
Test material form:
other: pale yellow solid
Remarks:
This solid sample was obtained from the original liquid form by removing water.
Details on test material:
Identification: Internal Olefin Sulfonate (IOS)
Appearance/physical state: pale yellow solid
Expiry date: 01 December 2016
Storage conditions: approximately 4 °C, in the dark

Results and discussion

Particle size
Key result
Percentile:
other: The percentage of test item having an inhalable particle size of less than 100 μm was determined to be 2.1%. The test item has been considered to be essentially non-inhalable.
Particle size distribution at different passages
No.:
#1
Size:
< 100 µm
Distribution:
2.1 other: %

Any other information on results incl. tables

Results

Sieve Screening Test

The results of the sieving procedure are shown in the following table:

 

Table 3.38

 

Measurement

Result

Mass of test item transferred to sieve

17.60 g

Mass of test item passed through sieve

0.37 g

Percentage of test item less than 100 µm

2.1 %

 

Applicant's summary and conclusion

Conclusions:
The percentage of test item having an inhalable particle size of less than 100 µm was determined to be 2.1%. The test item has been considered to be essentially non-inhalable.
Executive summary:

The determination was carried out using a procedure designed to be compatible with that given in European Commission Guidance Document EUR 20268 ‘Determination of Particle Size Distribution, Fibre Length and Diameter Distribution of Chemical Substances’, 2002.

Conclusion

The percentage of test item having an inhalable particle size of less than 100 µm was determined to be 2.1%. The test item has been considered to be essentially non-inhalable.

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