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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Particle size distribution (Granulometry)

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particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Well conducted study and sufficient information provided.
equivalent or similar to guideline
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
not specified
GLP compliance:
Type of method:
determination of fibre length and diameter distributions
Type of distribution:
other: PSD on volume and number basis
Key result
Remarks on result:
other: D10, D50 and D90 were determined on a number basis and or a volume basis and indicated that the particles can be considered both inhalable and respirable.
The particle size distribution was determined both on a volume and on a number basis and indicated that the particles can be considered both inhalable and respirable.

Description of key information

The individual registrants will provide particle size distribution data in their respective dossiers (reports to be added in analytical section). Typical grades contain particles in the µm or sub-µm range which can be considered both inhalable and respirable (cut-off level for the latter is ca. 4 µm).

Additional information