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Camachem CC5640

Sodium Silicate

Other Trading Names:

  • Liquid-Glass
  • Waterglass
  • Silicic Acid, Sodium Salt
  • Sodium Siliconate
  • Sodium Silicate
  • Soluble Silicate
  • Sodium Silikat
  • Alkaline Sodium Silicate
  • Silicate of Soda Liquid
  • Sodium Silico-Sulfate

CAS Number: 1344-09-8.

HS Code:2839.2000

Types of Packaging:

  • 25 kg or 50 lb bags
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Sodium Silicate

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Chemical Formula


CAS Registry Number



Clear to viscous liquid or solid (powder/granules)

pH (for liquid)

Typically around 11-13

Solubility (for liquid)

Highly soluble in water

Density (for liquid)

Varies based on concentration, typically 1.35 - 1.50 g/cm³

Melting Point (for solid)

Approximately 1088°C

Boiling Point (for liquid)

Varies based on concentration, typically around 100°C

Concentration (for liquid)

Ranges from 20% to 50% SiO2 by weight

Chemical Structure

Amorphous silica linked with sodium ions



Hazard Class

Corrosive (for concentrated solutions)

Chemical Identity:

  • Chemical Name: Sodium Silicate
  • Chemical Formula: Na2SiO3
  • CAS Number: 1344-09-8
  • Molecular Weight: Approximately 122.06 g/mol

Physical Properties:

  • Appearance: Clear to viscous liquid or solid (powder/granules), depending on concentration.
  • Density: Varies based on concentration, typically between 1.35 - 1.50 g/cm³ for liquid forms.
  • Melting Point: Approximately 1088°C (1980°F) for solid forms.
  • Boiling Point: Varies based on concentration, typically around 100°C (212°F) for dilute solutions.
  • Solubility: Highly soluble in water, forming an alkaline solution.

Chemical Properties:

  • Chemical Structure: Composed of silicate anions (SiO3²⁻) and sodium cations (Na⁺) linked in a complex network structure.
  • pH (for liquid): Typically around 11-13 in aqueous solutions.
  • Odor: Odorless.
  • Chemical Reactions: Can react with acids to form silica gel; used as a source of silica in various chemical processes.

Safety Information:

  • Toxicity: Generally low toxicity but can cause skin and eye irritation in concentrated forms.
  • Irritation: Can cause skin and eye irritation upon contact.
  • Handling Precautions: Use protective gloves and eyewear when handling concentrated solutions.
  • Storage: Store in a cool, dry, well-ventilated area.

Applications and Uses:

  • Detergents: Key ingredient in laundry detergents and dishwashing soaps for stain removal.
  • Paper and Pulp: Enhances paper strength and reduces dusting in papermaking.
  • Textile Industry: Stabilizes dyes and prevents bleeding in textile dyeing and printing.
  • Metal Casting: Crucial for creating molds and cores in foundry processes.
  • Construction: Added to cement and concrete for improved fire resistance and reduced permeability.
  • Water Treatment: Controls corrosion, scale formation, and pH in water treatment.
  • Adhesives and Sealants: Provides adhesive properties in various applications.
  • Fireproofing: Used in fire-resistant coatings and products due to high-temperature resistance.
  • Automotive Repair: Applied as a sealant for engine gaskets and radiator leaks.
  • Oil and Gas Industry: Utilized in drilling fluids and cementing operations.
  • Chemical Research: Used as a silica source and reagent in laboratory experiments and reactions.

Environmental Impact:

  • Eco-Friendliness: Non-toxic to the environment at low concentrations.
  • Bioaccumulation: Does not bioaccumulate in organisms.
  • Disposal Methods: Dispose of according to local regulations.

Regulatory Information:

  • HS Code: 2839.2000 for international trade classification.
  • Regulations: Subject to regulations depending on usage and region, including safety and environmental regulations.
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Sodium Silicate