Sodiumsilicate , AR, Model: 2.30-2.50 , 1344-09-8

Synonym(s):
Silicon;Sodium silicate solution;Sodium trisilicate solution;STAR;Water glass

CAS NO.：1344-09-8

Empirical Formula: Na2O3Si

Molecular Weight: 122.06

MDL number: MFCD00085311

EINECS: 215-687-4

PRODUCT Properties

• Melting point: 1410 °C(lit.)
• Boiling point: 2355 °C(lit.)
• Density: 2.33 g/mL at 25 °C(lit.)
• storage temp.: -20°C
• solubility: H₂O: soluble
• form: powder
• color: Colorless
• Water Solubility: very slightly soluble cold H2O [MER06]
• Merck: 13,8751
• Dielectric constant: 16.0（Ambient）
• Stability: Stable. Incompatible with acids, most metals, many organic materials.
• InChIKey: NTHWMYGWWRZVTN-UHFFFAOYSA-N

Description and Uses

Sodium silicate, 2Na2OSiO2, is the simplest form of glass. It is found as lumps of greenish glass soluble in steam under pressure, white powders of varying degrees of solubility, or liquids cloudy or clear. It is noncombustible; however, when the powdered form is suspended in air, it could cause a dust explosion if an ignition source is present. Breathing the dust may also cause health problems. The glass form could also create a hazard to responders in an accident. It is not listed as a hazardous material in the DOT Hazardous Materials Tables. The primary uses are as catalysts, soaps, adhesives, water treatment, bleaching, waterproofing, and flame retardant.

Lining Bessemer converters, acid concentrators. manufacture of grindstones, abrasive wheels (as binder only).

Safety

• Symbol(GHS): GHS05, GHS07
• Signal word: Danger
• Hazard statements: H290-H314-H335
• Precautionary statements: P261-P280-P305+P351+P338-P310
• Hazard Codes: F,Xi,T,C
• Risk Statements: 11-36/38-34-23/24/25-36/37/38-35-20/21/22-37
• Safety Statements: 26-36/37-45-7/9-28-36/37/39-36-27
• RIDADR: UN 2922 8/PG 2
• WGK Germany: 2
• RTECS: VW0400000
• F: 34
• HazardClass: 8
• PackingGroup: II
• HS Code: 28391910
• Toxicity: LD50 oral in rat: 1960mg/kg