🧴 Product Name:
Sodium Silicate
🔬 Scientific Name:
Disodium Silicate / Metasilicate
🏷️ Trade Names:
Water glass, liquid glass, sodium silicate, alkali silicate
⚛️ Chemical Formula:
Na₂SiO₃
🧾 CAS Number:
1344-09-8
📦 HS Code:
2839.11
📘 Description:
Sodium silicate, commonly known as water glass, is a highly alkaline inorganic compound available in solid or liquid form. It is used in a wide range of industries such as adhesives, fireproofing, detergents, concrete additives, and corrosion inhibition. The SiO₂/Na₂O ratio determines its application type.
⚗️ Physical & Chemical Properties:
| Property | Value |
| Physical State | Clear liquid or white powder |
| pH (1% solution) | 11.5 – 12.5 |
| Density (liquid) | 1.3 – 1.6 g/cm³ |
| Water Solubility | Soluble |
| SiO₂ / Na₂O ratio | 1.5:1 – 3.3:1 |
| Viscosity | Depends on concentration |
🧪 Production Process:
Produced by melting silica (SiO₂) with soda ash (Na₂CO₃) at high temperatures, or by reaction with sodium hydroxide.
🧯 Safety & Handling:
- Hazards: Corrosive to eyes and skin; inhalation may cause irritation.
- Precautions: Use gloves, goggles, respirators, and provide proper ventilation.
- Packaging: IBC containers, steel drums, moisture-proof bags
- Transport: Non-flammable, corrosive material
📊 Grades & Purity:
| Grade Type | SiO₂/Na₂O Ratio | Form | Applications |
| Industrial Grade | 2.0 – 3.3 | Liquid | Adhesives, coatings, detergent boosters |
| Detergent Grade | 2.0 – 2.5 | Powder | Soaps, powdered detergents |
| Construction | 3.0 – 3.3 | Liquid | Concrete additive, fireproofing, sealant |
| Food/Pharma | Special Grades | Powder | pH stabilizer, drying agents (in food-grade use) |
🌍 Major Exporters:
China, India, Germany, Turkey, Poland
🌎 Major Importers:
Iran, Egypt, Brazil, Saudi Arabia, Russia
🔎 SEO Keywords:
Sodium silicate liquid, buy water glass, Na₂SiO₃ for concrete, industrial sodium silicate, fireproof additive
