Summary
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1.
A significant amount (∼ 1.3%) of acid hydroxyl groups bonded to silicon atoms is present on the surface of chrysotile asbestos.
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2.
Disintegration of layer silicates by ultrasonics in an aqueous medium increases the number of acid hydroxyl groups on the surface.
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3.
The Tserevitinov-Terent'ev method for the determination of labile hydrogen is applicable to the quantitative determination of ≡ Si-OH groups on the surface of layer silicates.
Literature cited
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Skorik, Y.I., Gileva, K.G., Kukharskaya, É.V. et al. An increase in the number of ≡ Si-OH surface groups in layer silicates. Russ Chem Bull 12, 841–843 (1963). https://doi.org/10.1007/BF01134738
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DOI: https://doi.org/10.1007/BF01134738