| 摘要 |
The invention relates to a silica which is usable, in particular, in dentifrice compositions and compatible, more particularly, with chlorhexidine. The silica of the invention possesses an at least 65%, and more especially at least 90%, compatibility with products of the guanidine type, and especially chlorhexidine, as well as an acid value Ho of at least 3.3. |
