Sodium silicate
CAS 1344-09-8Na2O3Si122.063 g/mol
Sodium silicate is an inorganic sodium salt having silicate as the counterion. It contains a silicate ion.
IUPAC: disodium;dioxido(oxo)silane
PubChem
Physical & Chemical Properties
| Melting Point | 1089 °C |
| Boiling Point | BOILING POINT: 100 °C -6H20 /NONAHYDRATE/ |
| Density | 1.1 to 1.7 at 68 °F (USCG, 1999) |
| Solubility | VERY SOL IN COLD & HOT WATER; SOLUBLE IN DILUTE SODIUM HYDROXIDE; INSOLUBLE IN ALCOHOL, ACIDS /NONAHYDRATE/ |
| pH | PH: ABOUT 12.5; HAS RELATIVELY HIGH BUFFER CAPACITY /0.5% SOLUTION/ |
| Appearance | Sodium silicate appears as a powdered or flaked solid substance. Strong irritant to skin, eyes, and mucous membranes. May be toxic by ingestion. Concentrated aqueous solutions used as a glue. |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
No GHS classification data available.
Classification data is sourced from ECHA.
Regulatory Compliance
TSCA
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
No trade flow data available for this chemical.
HS Code(s): 2839
Data: UN Comtrade
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