Sodium Disilicate

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 Sodium Disilicate, commonly supplied in granular or powder form, is an alkaline, water-soluble compound used widely in industrial applications. It functions primarily as a binder, adhesive, and corrosion inhibitor. Its high alkalinity and silicate content make it effective in detergents, water treatment, and cement manufacturing. Sodium Disilicate is valued for its ability to improve strength and durability of materials, as well as its effectiveness in cleaning and stabilizing processes.

Description

Sodium Disilicate

Primary Uses

  1. Detergents and Cleaning Products
  • Acts as a builder and alkalinity source in laundry detergents and industrial cleaners.
  • Enhances cleaning efficiency by softening water and breaking down grease and oils.
  1. Water Treatment
  • Used for corrosion inhibition in water systems, protecting metal surfaces such as boilers and cooling towers.
  • Helps control pH and prevent scale formation.
  1. Cement and Construction
  • Employed as an additive to improve cement and concrete strength and adhesion.
  • Used as a binder in refractory materials and ceramics.
  1. Adhesives and Binders
  • Functions as a binding agent in various industrial processes including paper and textile manufacturing.

Secondary Uses

  1. Coatings and Paints
  • Used as a corrosion inhibitor and adhesion promoter in certain coating formulations.
  1. Catalyst Carrier
  • Sometimes utilized as a carrier or support material in catalyst systems.
KEY PRODUCT FEATURES

1. Basic Identification Attributes

  • Chemical Name (IUPAC): Disodium metasilicate (commonly referred to as sodium disilicate)
  • Common/Trade Name: Sodium Disilicate
  • CAS Number: 1344-09-8
  • HS Code: 2839.31
  • Synonyms: Water glass, Sodium silicate

2. Physical & Chemical Properties

  • Physical State: Granular or powder
  • Color & Odor: White to off-white; odorless
  • Solubility: Soluble in water
  • pH: Strongly alkaline (~11-13 in solution)
  • Density: Approx. 2.4 g/cm³

3. Safety & Hazard Attributes

  • GHS Classification: Corrosive to skin and eyes
  • Toxicity: Moderate irritant; avoid prolonged exposure
  • Exposure Limits: Use appropriate industrial hygiene measures

4. Storage & Handling Attributes

  • Storage Conditions: Store in a cool, dry, well-ventilated area, protected from moisture
  • Container Type: Supplied in sealed plastic or woven polypropylene bags (25kg)
  • Shelf Life: Stable under recommended storage conditions
  • Handling Precautions: Use protective gloves and goggles; avoid dust inhalation
  • Storage Measures: Keep containers tightly closed and stored in a dry environment

5. Regulatory & Compliance Attributes

  • Complies with industrial chemical regulations for alkaline silicates
  • Meets standards for use in detergents, water treatment, and construction applications

6. Environmental & Health Impact

  • Biodegradability: Inorganic compound; does not biodegrade but is not bioaccumulative
  • Ecotoxicity: Can be harmful to aquatic life due to alkalinity; avoid environmental discharge
  • Bioaccumulation: Not expected
SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

  • PPE Required: Acid/alkali resistant gloves, goggles, protective clothing, and dust mask recommended
  • Handling Guidelines: Avoid inhalation, ingestion, and skin or eye contact; ensure adequate ventilation
  • Storage Measures: Keep containers sealed and separate from acids and incompatible materials

First Aid Measures

  • Inhalation: Move to fresh air; seek medical attention if respiratory irritation develops
  • Skin Contact: Wash with plenty of water and soap; seek medical advice if irritation persists
  • Eye Contact: Rinse immediately with plenty of water for at least 15 minutes; seek urgent medical attention
  • Ingestion: Rinse mouth; do not induce vomiting; seek immediate medical assistance

Firefighting Measures

  • Fire Hazards: Non-flammable
  • Extinguishing Media: Use water spray, foam, dry chemical, or CO₂ as appropriate for surrounding fire
  • Special Precautions: Wear protective equipment and self-contained breathing apparatus if required
  • Hazardous Combustion Products: None known