1. A composition comprising:! a) a dispersed source of tin chloride； and! b) silicon dioxide,! representing a dispersed solid. ! 2. The composition according to claim 1, characterized in that the source of tin chloride is tin chloride dihydrate or anhydrous tin chloride. ! 3. The composition according to claim 1, characterized in that the source of tin chloride is tin chloride dihydrate. ! 4. The composition according to claim 1, characterized in that the silicon dioxide has a particle size of from about 0.5 to about 30 microns. ! 5. The composition according to claim 1, characterized in that the silicon dioxide has a particle size of from about 5 to about 15 microns. ! 6. The composition according to claim 1, characterized in that the silicon dioxide is mixed with tin chloride dihydrate when the amount of silicon dioxide in the mixture is more than about 0.5 wt.%. ! 7. The composition according to claim 1, characterized in that the silicon dioxide is mixed with tin chloride dihydrate when the amount of silicon dioxide in the mixture is about 0.5-5 wt.%. ! 8. The composition according to claim 1, characterized in that the ratio of silicon dioxide to tin chloride is in the range from about 0.5: 99.5 to about 10.0: 90.0. ! 9. The composition according to claim 1, characterized in that the ratio of silicon dioxide to tin chloride is in the range from about 1.0: 99.0 to about 5.0: 95.0. !ten. The composition according to claim 1, characterized in that the ratio of silicon dioxide to tin chloride is in the range from about 2.0: 98.0 to about 3.0: 97.0. ! 11. The composition according to claim 1, characterized in that it contains at least about 90% tin chloride. ! 12. The composition according to claim 1, characterized in that it contains at least about 95% tin chloride. ! 13. Method for the production of an oral composition, including1. Композиция, содержащая: ! а) дисперсный источник хлорида олова； и ! b) диоксид кремния, ! представляющий собой дисперсное твердое вещ
