- Oral compositions
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Oral compositions providing antitartar and antigingivitis benefits containing an antitartar agent and a stannous salt.
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- Oral composition for calculus retardation
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Oral compositions, such as toothpaste, mouthwash, and the like, containing certain polyphosphonic acids and their salts which retard dental calculus formation without damaging tooth structure.
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- On the acidity of substituted methylenediphosphonates and their interaction with alkali metal ions
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The acidity of and Li+, Na+, K+, and Cs+ complexing with a series of substituted methylenediphosphonates have been determined at 25° in 0.5 M tetramethylammonium chloride. The acid properties of the alkyl-substituted methylenediphosphonates have been shown to be correlated with the electron-donor ability of the substituents attached to the bridging carbon atom. Also, logβMHiL (i = 0, 1) is predicted by an equation involving the reciprocal of the radius of the bare cation and the sum of the Taft σ* values. For 1-hydroxyethylidene-1,1-diphosphonic acid evidence is presented for intramolecular binding of the protons and the metal ions by the hydroxyl group.
- Carroll, Robert L.,Irani, Riyad R.
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p. 1994 - 1998
(2007/10/05)
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