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Particle size distribution (Granulometry)

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A determination of particle size distribution (granulometry) need not be conducted on substances that are marketed or used in non-solid or non-granular form.  Dimethyl terephthalate is not marketed or used in powder or granular form: it is commonly produced, transported and used in the molten state and as briquettes without respirable dust.  If allowed to cool and solidify, the melt forms a rigid, solid cake.  Milling or grinding would be necessary to transform the cake to a granule or powder (e.g. for testing purposes), but neither process is applied in the commercial production of DMT.  

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