Activated Carbon - Low Density Skeleton

Particle size distribution (Granulometry)

Link to relevant study record(s)

Reference

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

10/03/2010 - 10/03/2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

other: •EUROPEAN COMMISSION, Directorate General XII-JRC, Science Research and Development-Joint Research Centre. “Particle Size Distribution, Fibre Length and Diameter Distribution” Guidance Document, ECB/TM/February 1996.

Deviations:

no

Principles of method if other than guideline:

Not relevant

GLP compliance:

yes (incl. QA statement)

Type of method:

Laser scattering/diffraction

Key result

Percentile:

D50

Mean:

19 µm

Remarks on result:

other: range between 0.3 and 60 µm(migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.)

Percentile:

other: D5

Mean:

< 3.3 µm

St. dev.:

0.13

Percentile:

D10

Mean:

< 5.5 µm

St. dev.:

0.248

Percentile:

D50

Mean:

< 19 µm

St. dev.:

0.138

Percentile:

D90

Mean:

< 35.1 µm

St. dev.:

0.283

For detailed results (distribution of different passages) see attached file results.doc.

Chemically Activated Carbon is a black powder. Under the microscope (with a magnification of 100), small-sized particles were observed.

 

A solubility test showed, that the test item is both: sparingly soluble and well dispersible in water. The particle size distribution of Chemically Activated Carbon was performed with two samples of the stock dispersion each measured in duplicate.

The results obtained during the measurements showed no relevant difference. Therefore the study is considered to be valid and no further testing is necessary.

Conclusions:

The mass median diameter (MMD) of chemically activated carbon is 19.0 µm, the particle size distribution ranges from 0.3 to 60.0 µm.

Executive summary:

The particle size distribution of chemically activated carbon was determined according to "EC ECB/TM/Feb. 1996" using the laser diffraction method. The mass median diameter (MMD) of chemically activated carbon was found to be 19.0 µm, the particle size distribution was found to range from approximately 0.3 to 60.0 µm.

Description of key information

experimental result klimisch 1 method ECB/TM/feb 1996
mass median diametre 19 µm

Additional information

range between 0,3 and 60 µm

Percentile	Mean	St. dev.
other: D5	< 3.3 µm	0.13
D10	< 5.5 µm	0.248
D50	< 19 µm	0.138
D90	< 35.1 µm	0.283