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Aluminium Silicate
Original price was: $ 1.64.$ 1.55Current price is: $ 1.55.
Aluminium silicate is an inorganic compound composed of aluminum, silicon, and oxygen, often found naturally as a major component of clay minerals such as kaolinite, halloysite, and other aluminosilicates. It is a white to off-white powder with excellent thermal stability, chemical inertness, and physical durability. Due to its wide range of physicochemical properties—including high melting point, non-toxicity, and adsorptive capabilities—aluminium silicate is extensively used across diverse industries including ceramics, paints, paper, rubber, plastics, cosmetics, and pharmaceuticals. Its unique structure imparts benefits such as heat resistance, improved mechanical strength, and anti-caking properties, making it a vital raw material in both industrial and consumer products.
Aluminium Silicate
Primary Uses
- Ceramics & Refractories
- Essential raw material in porcelain, sanitary ware, tiles, and advanced ceramic products.
- Key ingredient in refractory bricks and kiln linings, providing resistance to heat, thermal shock, and chemical corrosion.
- Enhances mechanical strength and dimensional stability at high temperatures.
- Paints & Coatings
- Functions as an extender pigment, improving opacity, durability, and weather resistance.
- Improves adhesion and hardness of coatings, contributing to abrasion resistance and surface protection.
- Controls rheology and prevents cracking in dried paint films.
- Paper Industry
- Used as a coating pigment and filler to boost brightness, opacity, and smoothness of paper surfaces.
- Improves printability, ink holdout, and reduces dusting during handling.
- Contributes to paper’s tactile quality and strength.
- Rubber & Plastics
- Reinforcing filler in tires, hoses, belts, and molded plastic products to enhance strength, abrasion resistance, and durability.
- Improves thermal and dimensional stability of rubber and plastic compounds.
- Modifies electrical and thermal conductivity in specialized applications.
- Cosmetics & Pharmaceuticals
- Acts as an absorbent and anti-caking agent in powders, deodorants, face masks, and makeup products.
- Used in tablet and capsule formulations to improve flowability and manufacturing consistency.
- Its inertness makes it suitable for sensitive skin and topical formulations.
- Catalysts & Adsorbents
- Serves as a catalyst support in petrochemical refining and environmental applications.
- Used in purification processes for water treatment and gas filtration.
- Adsorbs heavy metals and organic contaminants due to its porous structure.
Secondary Uses
- Detergents
- Used as a builder and anti-caking agent in powdered detergents, enhancing cleaning efficiency and powder flow.
- Agriculture
- Acts as a soil conditioner and slow-release alumina/silica source in fertilizers.
- Prevents clumping in granular fertilizers.
- Construction Materials
- Added to cement and concrete to improve strength, chemical resistance, and reduce porosity.
- Used in adhesives, sealants, and insulating materials.
- Electronics & Electrical Applications
- Electrical insulator and dielectric material in microelectronics and circuit boards.
- Used in manufacturing capacitors and resistors due to thermal stability.
- Food Additive
- E559, used as an anti-caking agent in powdered foods like salt, spices, and drink mixes.
- Prevents clumping, improves flow properties, safe within regulatory limits.
- Animal Feed & Veterinary Uses
- Used as binder or anti-caking agent in animal feed powders.
- Carrier for veterinary supplements and medicines.
- Environmental Applications
- Soil remediation agent immobilizing heavy metals.
- Used in barriers and liners to prevent pollutant leaching.
- Textile Industry
- Filler and coating agent in textile finishing to improve smoothness, whiteness, and durability.
1. Basic Identification Attributes
- Chemical Name (IUPAC): Aluminium Silicate
- Common/Trade Names: Kaolin, Mullite (when heated), Aluminosilicate
- CAS Number: 12173-37-6 (kaolinite form)
- Molecular Formula: Variable; general formula Al₂O₃·2SiO₂·2H₂O (kaolin)
- HS Code: 2521.00.00 (varies by country)
- Synonyms: Kaolin, China clay, Aluminosilicate
2. Physical & Chemical Properties
- Physical State: Powder or granular solid
- Color & Odor: White to off-white, odorless
- Melting Point: Decomposes >1750°C
- Boiling Point: N/A (decomposes)
- Density: ~2.6 g/cm³ (varies by form)
- Solubility: Insoluble in water and most solvents
- pH: Slightly acidic to neutral (~4.5-7 depending on source)
- Thermal Stability: High, withstands high temperatures without melting
- Surface Area: Variable, often high surface area due to fine particle size
3. Safety & Hazard Attributes
- Hazard Class (GHS): Generally regarded as non-hazardous
- NFPA Ratings: Health 1 (slight irritant), Flammability 0, Reactivity 0
- Exposure Limits: No established limits; considered low toxicity
- Reactivity: Stable under normal conditions; inert
- Incompatibilities: Strong acids and bases can degrade
4. Storage & Handling Attributes
- Storage: Store in dry, cool environment to prevent moisture uptake
- Container: Sealed bags or drums, moisture-proof packaging recommended
- Shelf Life: Indefinite if stored properly
- Handling: Avoid dust generation; use dust masks and goggles if airborne particles present
5. Regulatory & Compliance Attributes
- FDA: Approved as a food additive (E559) for anti-caking
- EFSA: Approved as food additive
- OSHA/NIOSH: No specific limits
- Transportation: Non-hazardous for transport
- Disposal: Can be disposed of as non-hazardous solid waste, following local regulations
6. Environmental & Health Impact
- Ecotoxicity: Low toxicity to aquatic and terrestrial organisms
- Biodegradability: Non-biodegradable but inert and stable in environment
- Persistence: Persistent but minimal bioaccumulation
- Carcinogenicity: Not classified as carcinogenic or mutagenic
- Environmental Fate: Remains stable, does not readily leach
Safety Handling Precautions
- PPE: Use gloves, goggles, dust masks when handling powders.
- Ventilation: Handle in well-ventilated areas to reduce inhalation of dust.
- Hygiene: Wash hands after use; avoid eating/drinking/smoking while handling.
- Spills: Sweep up dry; avoid water dispersal to prevent dust cloud.
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if irritation persists.
- Skin Contact: Wash with soap and water; seek medical care if irritation continues.
- Eye Contact: Flush with water for 15 minutes; get medical advice if irritation persists.
- Ingestion: Rinse mouth; seek medical advice if large amounts ingested.
Firefighting Measures
- Fire Hazards: Non-flammable; dust may pose minor explosion risk in confined spaces.
- Extinguishing Media: Water, foam, dry chemical for surrounding fires.
- Special Precautions: Avoid dust clouds; wear respiratory protection if dust present.
Related products
Aluminum Fine Powder
Aluminum fine powder consists of finely divided aluminum particles, typically metallic and silvery-white in appearance. It is produced by atomization or grinding of bulk aluminum and is valued for its high surface area, excellent conductivity, and lightweight metallic properties. Aluminum fine powder is extensively used in various industrial applications including metallurgy, pyrotechnics, coatings, additive manufacturing, and as a pigment. Due to its reactivity, it requires careful handling and storage. Its fine particulate nature makes it particularly useful where rapid oxidation or reaction is desired, such as in explosives or energetic materials. It is also employed in the manufacturing of paints, inks, and cosmetics to impart metallic luster.
Aluminum hydroxide
Aluminum Hydroxide, chemically known as Al(OH)₃, is a white, odorless, and odorless powder or gelatinous substance. It is widely used in pharmaceuticals as an antacid to neutralize stomach acid and relieve indigestion and heartburn. Beyond healthcare, aluminum hydroxide is a crucial component in water purification, fire retardants, and as a precursor or filler in various industrial applications. It functions as a flame retardant by releasing water upon heating, thus cooling the material and diluting flammable gases. Due to its amphoteric nature, it can react both as an acid and base, enhancing its versatility. Aluminum hydroxide is often utilized in manufacturing aluminum salts and in producing aluminum oxide.
Binder
A binder is a broad category of substances—organic or inorganic—used to hold different materials together in a cohesive mass. Common binders include natural polymers (starch, cellulose derivatives, proteins), synthetic resins (PVA, acrylics, phenolics), and inorganic binders (clays, cement, lime). They are essential in industries such as pharmaceuticals, construction, coatings, ceramics, adhesives, and printing, where they provide structural integrity, adhesion, and controlled release properties.
Calcined Kaolin
Calcined Kaolin is a fine, white to off-white powder produced by heating natural kaolin clay to high temperatures (typically between 600°C and 900°C) in a controlled process called calcination. This thermal treatment removes chemically bound water, changes the crystalline structure, and enhances the physical and chemical properties of kaolin. The resulting product exhibits increased brightness, hardness, and opacity, making it highly valuable as a functional additive and filler in numerous industrial applications. Calcined Kaolin is widely used in coatings, ceramics, plastics, rubber, paper, and paint industries to improve durability, brightness, and performance.
Calcium Carbonate Filler
Calcium Carbonate Filler is a high-quality, uncoated ground calcium carbonate (GCC) specially engineered for use as a filler in polyethylene (PE) and other polyolefin resins. This grade of calcium carbonate is designed to enhance the physical and mechanical properties of plastics while providing cost-effective bulk and improved processing. It is a fine, white, odorless powder with excellent brightness, high purity, and uniform particle size distribution. Its use improves stiffness, impact resistance, dimensional stability, and surface finish in polyethylene applications such as films, sheets, pipes, and molded parts.
Calcium Carbonate Heavy
Calcium Carbonate Heavy is a high-density, finely ground, natural mineral primarily composed of calcium carbonate (CaCO₃). Known for its higher bulk density compared to regular grades, this filler is widely used in applications requiring enhanced weight, opacity, and strength. It is commonly employed as a functional filler and extender in industries such as plastics, paints, coatings, adhesives, rubber, paper, and construction materials. Its inert nature, whiteness, and particle size distribution make it suitable for improving mechanical properties and surface finish, while also offering cost efficiency by replacing more expensive raw materials.
Sodium Sulphate Anhydrous
Sodium Sulphate Anhydrous (Na₂SO₄) is a white crystalline powder, odorless and highly soluble in water. Unlike the decahydrate form (Glauber's salt), this anhydrous grade contains minimal water content, making it ideal for industrial applications requiring low moisture levels. Supplied in 25kg packaging, it is widely used as a filler, drying agent, and raw material in detergents, glass manufacturing, pulp and paper, and chemical synthesis. Its excellent stability, non-hygroscopic nature, and cost-effectiveness make it an essential bulk chemical.
Xysil Fumed Silica
Xysil Fumed Silica is a high-purity fumed silica produced through flame hydrolysis of silicon tetrachloride. It is an ultra-fine, amorphous, white powder with a very high surface area and low bulk density. Xysil 200 is widely used as a reinforcing filler, thickening agent, anti-caking agent, and rheology modifier in various industrial applications. Its unique physical properties improve the mechanical strength, viscosity, and stability of formulated products.
