| http://www.w3.org/ns/prov#value | - Here, the self-dispersing carbon black in which M represents ammonium can be obtained by, for example, a method including substituting M, which represents an alkali metal, in self-dispersing carbon black by ammonium by means of an ion exchange method or a method including adding an acid to convert self-dispersing carbon black in which M represents an alkali metal to an H type and adding ammonium t
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