Lithium trifluoromethanesulphonate

Particle size distribution (Granulometry)

Administrative data

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 12-September-2016 to 29-November-2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

GLP compliant

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2016

Report date:

2016

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

ISO 13320 (Particle size analysis - Laser diffraction methods)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

other: CIPAC MT 187

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

Laser scattering/diffraction

Type of distribution:

volumetric distribution

Test material

Test material information

Constituent 1

Reference substance name:

Lithium trifluoromethanesulphonate

EC Number:

251-528-5

EC Name:

Lithium trifluoromethanesulphonate

Cas Number:

33454-82-9

Molecular formula:

CHF3O3S.Li

IUPAC Name:

lithium trifluoromethanesulphonate

Test material form:

solid: particulate/powder

Details on test material:

See confidential details on test material

Specific details on test material used for the study:

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: room temperature container flushed with nitrogen, desiccated

Results and discussion

Mass median aerodynamic diameter:

116.312 µm

Particle size

Particle size 1

Key result

Percentile:

D10

Mean:

< 30.828 µm

St. dev.:

0.086

Remarks on result:

other: Average value

Particle size 2

Key result

Percentile:

D50

Mean:

< 79.509 µm

St. dev.:

0.265

Remarks on result:

other: Average value

Particle size 3

Key result

Percentile:

D90

Mean:

< 164.406 µm

St. dev.:

0.751

Remarks on result:

other: Average value

Any other information on results incl. tables

Lithium Trifluoromethanesulfonate is a medium to fine powder with lumps and clusters. Under the microscope, particles appeared to be irregular shaped crystals (with a magnification of 100). The sample was observed to be made up of single crystalline particles and agglomerated particles (with a magnification of 400).

 

A solubility test showed, that the test item is both: sparingly soluble and well dispersible kerosene.

 

The particle size distribution was found to range from approximately 0.56 µm to 320 µm.

Full Test Results

	Run 1	Run 2	Run 3	Run 4	Run 5	Average**
Volume weighted mean	89.651	90.102	90.037	89.624	88.981	89.679
Median	79.811	79.684	79.667	79.252	79.139	79.509
Mode	89.494	89.116	89.165	88.357	88.638	88.951
MMDA*	116.753	116.567	116.542	115.935	115.770	116.312
d10 - 10% of material <	30.958	30.847	30.858	30.786	30.696	30.828
d50 - 50% of material <	79.811	79.684	79.667	79.252	79.139	79.509
d90 - 90% of material <	164.279	165.308	165.070	164.280	163.166	164.406

All results in µm

*: Mass medium aerodynamic diameter

**: Average result calculated from the entirely of data captured in each run and not a simple arithmetic mean

Standard Deviation Results

Run No.	1	2	3	4	5	STDVP	% STDVP
d10 - 10% of material <	30.958	30.847	30.858	30.786	30.696	0.086	0.3
d50 - 50% of material <	79.811	79.689	79.667	79.252	79.139	0.265	0.3
d90 - 90% of material <	164.279	165.308	165.070	164.280	163.166	0.751	0.5
d15.78 - 15.78% of material <	39.273	39.129	39.137	39.045	39.951	0.330	0.8
GSD	2.032	2.037	2.036	2.030	1.981	0.021	1.0
MMDA	116.753	116.567	116.542	115.935	115.770	0.387	0.3

GSD: geometric standard devietion of the lognormal particle size distribution (calculated from d50/d15.78)

STDVP: standard deviation of the population

% STDVP: percentage standard deviation of the population

The results obtained during the measurements showed no relevant difference (standard deviation was found to be below 10%). Therefore the study is considered to be valid and no further testing is necessary.

Applicant's summary and conclusion

Conclusions:

The mass median aerodynamic diameter of Lithium Trifluoromethanesulfonate was determined to be 116.312 µm.
The particle size distribution was found to range from approximately 0.56 to 320 µm.

Executive summary:

Using the laser diffraction method (in accordance with ISO 13320:2009 and CIPAC MT 187, under GLP compliance) to study the particle size of Lithium Trifluoromethanesulfonate ranging between 0.02 µm and 2000 µm, the mass median aerodynamic diameter (MMAD) was determined to be 116.312 µm. The particle size distribution was found to range from approximately 0.56 µm to 320 µm.