Alkali hydroxides or carbonates in silica toothpaste

Details Alkali hydroxides or carbonates in silica toothpaste Alkali hydroxides or carbonates in silica toothpaste

C - Chemistry, Metallurgy

23

F

167/318.1

C23F 11/18 (2006.01) C23F 11/00 (2006.01)

Patent

CA 1115214

- 1 - Abstract The tendency of gel toothpastes comprising silica thickeners, such as silica aerogel or precipitated silica, and a fluoride source, such as sodium monofluorophosphate or fluoride, to corrode aluminium tubes can be reduced by incorporating at least 0.01% by weight sodium or potassium hydroxide or carbonate, so that the pH of the toothpaste is at least 8.5.

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