Metasilicic acid

Names
IUPAC name Metasilicic acid
Other names Silicic acid
Identifiers
CAS Number	7699-41-4 N
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL2068408
ChemSpider	14236 Y
ECHA InfoCard	100.028.834
EC Number	231-716-3
PubChem CID	14768
UNII	4OI8D3YOH1 N
CompTox Dashboard (EPA)	DTXSID30872499
InChI InChI=1S/H2O3Si/c1-4(2)3/h1-2H Y Key: IJKVHSBPTUYDLN-UHFFFAOYSA-N Y
SMILES O[Si](=O)O
Properties
Chemical formula	H2O3Si
Molar mass	78.098 g·mol−1
Conjugate base	Metasilicate
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H319, H335
Precautionary statements	P261, P264, P271, P280, P304+P340, P305+P351+P338, P312, P337+P313, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N (what is YN ?)
Infobox references

Metasilicic acid is the name given to the hypothetical chemical compound with formula H
₂SiO
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.

References[]