7.2.1.4 Testing for properties: structure - effect and determinationUsing an electron microscope, carbon black can be seen to be a variety ofchained or cluster-like branched aggregates of approximately spherical primaryparticles, with an overall diameter of 10-500 )im.Specific surface area (m^ g ^). smaller primary particles have a larger specificsurface area. If it were possible to form a string of primary carbon black particles
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