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Particle size distribution (Granulometry)

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Description of key information

Particle size distribution: >1000 μm - 93.4%; 850 μm - 2.6%; 600 μm - 2.7%; 300 μm - 0.6%; 180 μm - 0.2%; 106 μm - 0.3%; <106 μm - 0.2%

Additional information

Particle size distribution of production lots of THPA Δ4 flakes has been investigated in accordance with ASTM methods and determined to be:

>1000 μm 93.4%

850 μm 2.6%

600 μm 2.7%

300 μm 0.6%

180 μm 0.2%

106 μm 0.3%

<106 μm 0.2%

 

It is generally accepted that if >1% of the sample has a particle size <50 μm, inhalation testing should be considered as this could be an exposure route of concern.