A carbon black having an average particle size of at most 13 nm, D.sub.mod of at most 80 nm, a D.sub.1/2 /D.sub.mod ratio of at most 0.6 and at least pH 5.

Un noir de charbon ayant une dimension particulaire moyenne de tout au plus 13 nm, D.sub.mod de tout au plus 80 nm, un rapport de D.sub.1/2 /D.sub.mod de tout au plus 0.6 et au moins pH 5.

 
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> Inorganic oxides with mesoporosity or combined meso-and microporosity and process for the preparation thereof

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