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Sodium Silicate
Original price was: $ 1.05.$ 0.97Current price is: $ 0.97.
Sodium Silicate is a water-soluble, viscous alkaline liquid with the general formula Na₂SiO₃ (ratios vary). Commonly referred to as water glass or liquid glass, it appears as a clear to slightly cloudy solution. This 20-litre packaged product is known for its excellent adhesive, binding, and sealing properties. It is widely used in industrial, construction, detergent, and water treatment applications. Sodium silicate forms a glassy film upon drying and resists high temperatures and chemical attack, making it extremely versatile across many industries.
Sodium Silicate
Primary Uses
- Construction & Civil Engineering
- Concrete Hardening: Penetrates and densifies concrete surfaces to increase durability.
- Soil Stabilization: Used in grouting and ground improvement for tunneling and foundation works.
- Fireproofing Material: Binds with mineral wool and vermiculite for fire-resistant coatings.
- Cement Additive: Enhances chemical resistance and bonding properties.
- Detergents & Cleaners
- Laundry Detergents: Acts as a builder to soften water and enhance cleaning power.
- Dishwashing Liquids: Prevents corrosion of metal surfaces in alkaline solutions.
- Industrial Cleaners: Degreases, emulsifies, and disperses oils and fats from surfaces.
- Metal Surface Cleaning: Removes scale, rust, and organic residues from machinery and equipment.
- Adhesives & Binders
- Corrugated Board Adhesives: Binds paper layers in cardboard production.
- Foundry Sand Binder: Used in the preparation of sand molds and cores.
- Refractory Cement Binder: Binds high-temperature materials in kiln and furnace applications.
- Water Treatment
- Boiler Water Treatment: Prevents corrosion and scale formation in industrial boilers.
- Wastewater Treatment: Clarifies water by coagulating suspended solids.
- pH Adjustment: Alkalizes acidic waste streams.
- Textile & Pulp Industry
- Bleaching Stabilizer: Stabilizes hydrogen peroxide during pulp and fabric bleaching.
- Sizing Agent: Improves the stiffness and strength of paper and textiles.
- De-inking Agent: Helps in recycling printed paper by loosening ink from fibers.
- Automotive & Engineering
- Radiator Sealant: Seals minor leaks in vehicle cooling systems.
- Exhaust Repair Compounds: Used in high-temperature repair pastes.
Secondary Uses
- Ceramics & Pottery
- Deflocculant: Reduces viscosity of clay slurries in slip casting.
- Glaze Suspension Agent: Improves dispersion and stability of ceramic glazes.
- Agriculture
- Silicon Supplement: Used experimentally to boost plant resistance to stress.
- Pesticide Carrier: Acts as an adjuvant in certain agrochemical formulations.
- Mining & Metallurgy
- Ore Flotation Agent: Controls pH and acts as a dispersant in ore processing.
- Refractory Coating Binder: Used in high-temperature metal processing equipment.
- Fire Protection
- Intumescent Coatings: Expands when exposed to heat, providing fire resistance.
- Passive Fire Barriers: Used in wall and ceiling coatings for fire compartmentalization.
- Household Products
- Laundry Bluing Base: Occasionally used as a component in traditional laundry preparations.
- Toilet Bowl Cleaners: Found in strong alkaline cleaners for scale removal.
- Arts & Crafts
- Sculpting and Mold Making: Used in creating solidifying molds for metal casting or plaster work.
- Paper Mâché Hardener: Improves rigidity and water resistance of paper-based structures.
- Laboratory & Research
- Silica Gel Precursor: Used in the preparation of desiccants and chromatography media.
- Chemical Experiments: Demonstrates chemical garden or crystal growth in educational settings.
1. Basic Identification Attributes
- Chemical Name (IUPAC): Disodium metasilicate (common type)
- Common/Trade Name: Sodium Silicate, Water Glass, Liquid Glass
- CAS Number: 1344-09-8 (general form)
- HS Code: 2839.11.00
- Synonyms: Sodium silicate solution, Sodium water glass, Soluble glass
2. Physical & Chemical Properties
- Physical State: Viscous liquid solution
- Color & Odor: Clear to hazy; odorless
- Solubility: Fully miscible in water
- Specific Gravity: 1.35–1.55 (varies with ratio and solids content)
- pH (1% solution): ~11.3–12.5
- Solids Content: 38–45% by weight (for 45% grade)
- SiO₂/Na₂O Ratio: Commonly 2.0–3.3 depending on formulation
3. Safety & Hazard Attributes
- GHS Classification: Skin Irritant (Category 2), Eye Irritant (Category 2A)
- Toxicity: LD₅₀ (oral, rat) ~1150 mg/kg
- Exposure Limits: No established limits; handle with general ventilation
- Corrosivity: Alkaline—may damage skin, eyes, and mucous membranes
4. Storage & Handling Attributes
- Storage Conditions: Store in sealed containers; avoid freezing or extreme heat
- Container Type: 20-litre HDPE jerry cans, drums, or IBCs
- Shelf Life: 12–24 months under proper conditions
- Handling Precautions: Avoid contact with skin and eyes; do not mix with acids
5. Regulatory & Compliance Attributes
- REACH Registered
- FDA 21 CFR (Certain Grades) – Permitted as a boiler additive in food processing (indirect use)
- RoHS & SVHC Compliant
- TSCA Listed – USA
- Not classified as hazardous for transport (non-flammable liquid)
6. Environmental & Health Impact
- Biodegradability: Inorganic; not biodegradable but dilutes and neutralizes naturally
- Ecotoxicity: Moderately harmful to aquatic life in concentrated form
- Bioaccumulation: None expected
- Aquatic Impact: High pH may be harmful to fish and plant life if not neutralized
Safety Handling Precautions
- PPE Required: Alkaline-resistant gloves, goggles, protective clothing
- Handling Guidelines: Avoid breathing mist; use local ventilation if spraying
- Storage Measures: Keep container tightly sealed and upright
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if irritation occurs
- Skin Contact: Wash thoroughly with water; remove contaminated clothing
- Eye Contact: Flush with water for at least 15 minutes; seek immediate medical help
- Ingestion: Rinse mouth; do not induce vomiting; seek medical attention
Firefighting Measures
- Fire Hazards: Non-flammable; will not support combustion
- Extinguishing Media: Use media suitable for surrounding fire (water, CO₂, dry chemical)
- Hazardous Combustion Products: None known; stable under normal fire conditions
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