Comparison of Trimethylsilylation and Silicomolybdate Methods for Silicate Structure Analysis

The polymeric forms of silicic acid in various silicate antacids were studied by the trimethylsilyation and silicomolybdate methods. Composition and distribution were markedly influenced by the kind of silicates. The low molecular weight silicic acids determined by the silicomolybdate method were es...

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Published inYAKUGAKU ZASSHI Vol. 99; no. 8; pp. 783 - 787
Main Authors YOKOI, HIDEHARU, FUKUDA, CHIYO, TAKEDA, HISAKO, ENOMOTO, SABURO, TAKAHASHI, HIROSHI
Format Journal Article
LanguageJapanese
English
Published Japan The Pharmaceutical Society of Japan 01.08.1979
Subjects
absorption of silicic acid
Chemical Phenomena
Chemistry
colloidal silicic acids
gastrointestinal absorption
insoluble silicic acids
low molecular weight silicic acids
Methods
Molybdenum
Polymers
silicate structure analysis
Silicic Acid
silicomolybdate method
Silicon Dioxide
slicate antacid
trimethylsilylation method
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Summary:The polymeric forms of silicic acid in various silicate antacids were studied by the trimethylsilyation and silicomolybdate methods. Composition and distribution were markedly influenced by the kind of silicates. The low molecular weight silicic acids determined by the silicomolybdate method were estimated to include silicic acid molecules such as H4SiO4, H6Si2O7, H8Si3O10, H3Si4O12, and some linear polymer, and the forms of colloidal silicic acids were estimated to have H2n+4Si2nO5n+2. The trimethylsilylation method is excellent for the silicate structure analysis. It is possible to learn of a measure of the gastrointestinal absorption of silicic acid by the silicomolybdate method.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0031-6903
1347-5231
DOI:10.1248/yakushi1947.99.8_783