| 词条 | Metasilicic acid |
| 释义 |
| Verifiedfields = changed | Watchedfields = changed | verifiedrevid = | IUPACName = | OtherNames = Silicic acid | ImageFile = | ImageSize = | ImageName = |Section1={{Chembox Identifiers | InChI1 = | InChIKey1 = | CASNo = 7699-41-4 | CASNo_Ref = {{cascite|changed|CAS}} | UNII_Ref = {{fdacite|changed|FDA}} | UNII = 4OI8D3YOH1 | PubChem = 14768 | ChemSpiderID = 14236 | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | EINECS = 231-716-3 | ChEMBL = 2068408 | ChEBI_Ref = {{ebicite|correct|EBI}} | ChEBI = | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = InChI=1S/H2O3Si/c1-4(2)3/h1-2H | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = IJKVHSBPTUYDLN-UHFFFAOYSA-N | SMILES = O[Si](=O)O | InChI = | InChIKey = | Gmelin = }} |Section2={{Chembox Properties | H=2 | O=3 | Si=1 | ConjugateBase = Metasilicate | pKa = | MagSus = }} |Section3={{Chembox Hazards | GHSPictograms = {{GHS07}} | GHSSignalWord = Warning | HPhrases = {{H-phrases|319|335}} | PPhrases = {{P-phrases|261|264|271|280|304+340|305+351+338|312|337+313|403+233|405|501}} }} }}Metasilicic acid is the name given to the hypothetical chemical compound with formula {{chem|H|2|SiO|3}}. It has never been isolated. It is possible that it may exist in aqueous solution at very low concentration, but it has never been definitively characterized. It may be present in dilute solutions of sodium silicate at low pH.[1] Metasilicates occur widely in nature as inosilicates. References1. ^M. F. Bechtold (1955): "Polymerization and Properties of Dilute Aqueous Silicic Acid from Cation Exchange" Journal of Physical Chemistry, volume 59, issue 6, pages 532–541. {{doi|10.1021/j150528a013}} 3 : Oceanography|Aquatic ecology|Silicon compounds |
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