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Physical & Chemical properties

Particle size distribution (Granulometry)

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According to OECD guideline 110, the particle size distribution of phthalic acid was determined by scanning electron microscopy method for the sieved fraction (< 100 µm, 85.2 % of total sample) and presented on the basis of calculated mass fractions. The median diameter was 72 - 74 µm with the main fraction of 72 -78 % distributing in the range of 10 to 100 µm (Currenta, 2010); and hence the tested phthalic acid particles with sieved size smaller than 100 µm are mainly dominated by inhalable fraction as defined in EN 481.

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