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Particle size distribution (Granulometry)

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Description of key information

The MMAD (Mass Median Aerodynamic Diameter < 100 μm) has a value of 122.37 μm as spherical particles. Accounting on the total sample weight the fraction <4 µm (respirable) and the fraction 4 -10 µm (thoracic) was 0 % . The fraction of 10 -100 µm (inhalable) was 0.01% .

Additional information

According to OECD guideline 110, the particle size distribution of tetrasodium hydrogen 2-phosphonatobutane-1,2,4-tricarboxylate was determined by scanning eletron microscopy method for the sieved fration and presented on the basis of calculated mass fractions referring to the total sample weight. All particles with a mean diameter less than 100µm have a mass fraction of 0.01 %. 0.0 % of this mass fraction has a mean diameter less than 10 μm. The mass mediam diameter is 122.37 µm (spherical volume) and 120.96 µm (cubial volume).