Sodium Disilicate
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.
Sodium Disilicate
Primary Uses
- 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.
- 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.
- Cement and Construction
- Employed as an additive to improve cement and concrete strength and adhesion.
- Used as a binder in refractory materials and ceramics.
- Adhesives and Binders
- Functions as a binding agent in various industrial processes including paper and textile manufacturing.
Secondary Uses
- Coatings and Paints
- Used as a corrosion inhibitor and adhesion promoter in certain coating formulations.
- Catalyst Carrier
- Sometimes utilized as a carrier or support material in catalyst systems.
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
- 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
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Caustic Soda Flakes (Sodium Hydroxide)
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Hydrazine Food Grade
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Iodine Crystals
Iodine Crystals are high-purity elemental iodine in solid crystalline form. These dark violet-black crystals have a characteristic pungent odor and sublime easily at room temperature, releasing violet iodine vapors. Iodine is a halogen element widely used for its antiseptic, oxidizing, and chemical reagent properties in pharmaceutical, industrial, and laboratory applications.
Sodium Hexametaphosphate
Sodium Hexametaphosphate (SHMP) is a high-efficiency sequestrant and dispersing agent widely used across industrial applications. It appears as a white, odorless powder or granule, highly soluble in water, and is valued for its ability to chelate metal ions, soften water, and disperse solids. Its role in preventing scale formation and stabilizing chemical formulations makes it a key ingredient in water treatment, cleaning agents, and textile processing. It is the primary active ingredient in many commercial and industrial water treatment formulations, most notably as the original key component in the Calgon® brand of water softeners and scale inhibitors. While modern "Calgon" products may contain blended formulations, the term has become a common genericized reference for polyphosphate-based scale prevention, rooted in this chemical's function.
Sodium Metasilicate Pentahydrate
Sodium Metasilicate Pentahydrate is a white crystalline solid containing five molecules of water of crystallization. It is widely used for its alkaline and detergent properties, making it effective in cleaning, water treatment, and as a corrosion inhibitor. The pentahydrate form is commonly preferred in detergent and industrial applications where controlled moisture content is beneficial. It dissolves readily in water, forming strongly alkaline solutions useful in various industries.
Sodium Tripolyphosphate
Sodium Tripolyphosphate (STPP), chemical formula Na₅P₃O₁₀, is a white, granular or powdery inorganic compound widely used as a sequestrant, dispersant, and detergent builder. This 25kg packaged product is highly soluble in water, forming alkaline solutions that effectively soften water by chelating calcium and magnesium ions. Its excellent emulsifying and dispersing properties make it an essential ingredient in detergents, water treatment, food processing, and industrial cleaning applications.
Trisodium Phosphate
Trisodium Phosphate (TSP) is an inorganic, highly alkaline compound commonly available as a white, granular or crystalline solid. It is widely used for its powerful cleaning, degreasing, buffering, and water-softening properties. TSP is a versatile compound with significant utility across food processing, detergents, industrial cleaning, water treatment, and construction industries. It also acts as a flux, pH adjuster, emulsifier, and sequestrant. Both technical and food grades are available depending on the application.

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