Products Description of Sodium metasilicate CAS#6834-92-0
Metasilicates are highly soluble in water but insoluble in alcohols, acids, and salt solutions. Sodium metasilicate solutions undergo hydrolysis when heated or acidified, producing free sodium ions and silicic acid.In humid air, they are corrosive to metals like zinc, aluminum, tin, and lead, leading to the formation of hydrogen gas. As strong bases, all metasilicates react vigorously with acids.
Parameters
Melting point | 1089°C |
density | |
refractive index | nD25 (glass) 1.520 |
solubility | soluble in cold H2O; reachot H2O; insoluble in ethanol |
form | |
color | White |
Specific Gravity | 2.61 |
PH | 11(1 mM solution);11.91(10 mM solution);12.62(100 mM solution) |
Water Solubility | Soluble in cold water. Hydrolyzes in hot water. Insoluble in acids, alcohol and salt solutions. |
Hydrolytic Sensitivity | 0: forms stable aqueous solutions |
Merck | 14,8642 |
Stability: | hygroscopic |
InChIKey | NTHWMYGWWRZVTN-UHFFFAOYSA-N |
CAS DataBase Reference | 6834-92-0(CAS DataBase Reference) |
NIST Chemistry Reference | Sodium silicate(6834-92-0) |
EPA Substance Registry System | Sodium metasilicate (6834-92-0) |
Safety Information
Hazard Codes | C |
Risk Statements | 36/37/38-37-34 |
Safety Statements | 26-45-36/37/39-13-24/25 |
RIDADR | UN 3253 8/PG 3 |
WGK Germany | 1 |
RTECS | VV9275000 |
F | 3 |
TSCA | Yes |
HazardClass | 8 |
PackingGroup | III |
HS Code | 28391910 |
Hazardous Substances Data | 6834-92-0(Hazardous Substances Data) |
Product Application of Sodium metasilicate CAS#6834-92-0
Several hydrates of sodium metasilicate find application in soaps, detergents, and bath/washing products. They also serve a key role as builders in these cleansing products—substances that boost or preserve the surfactant’s cleaning efficiency, primarily by neutralizing water hardness. Additionally, they are utilized as corrosion inhibitors in boiler water feeds.
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