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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Physical & Chemical properties

Particle size distribution (Granulometry)

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Description of key information

Particle size distribution has been determined for hafnium oxide by laser diffraction following  OECD 110 ( Particle Size Distribution) and following results have been observed : 
- D50 is 0.250 µm
- D10 is 0.183 µm
- D90 is 0.533 µm

Additional information

It should be noted that hafnium dioxide has many particle size distributions depending on the manufacturing process and intended use.

It is therefore not possible to conclude a representative d50 and the value obtained should be individually considered representative.