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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.
Xysil Fumed Silica
Primary Uses
- Paints & Coatings Industry
- Thickener & Rheology Modifier: Enhances viscosity and sag resistance in paints and coatings, improving application and finish.
- Adhesives & Sealants
- Reinforcing Filler: Improves mechanical strength, thixotropy, and bonding properties in adhesives and sealants.
- Plastics & Rubber Industry
- Reinforcement Agent: Increases tensile strength, abrasion resistance, and durability in plastic and rubber compounds.
- Cosmetics & Personal Care
- Anti-Caking & Opacifying Agent: Used in powders and creams to prevent clumping and improve texture and appearance.
Secondary Uses
- Pharmaceutical Industry
- Flow Aid: Facilitates powder flow and prevents caking in tablet formulations and capsules.
- Food Industry
- Anti-Caking Agent: Used in powdered food products and supplements to improve handling and shelf life (food-grade specifications required).
- Electronics
- Insulating Filler: Incorporated in silicone rubbers and potting compounds for electrical insulation.
1. Basic Identification Attributes
- Chemical Name (IUPAC): Silicon dioxide, amorphous
- Common/Trade Name: Xysil 200, Fumed Silica 200
- CAS Number: 112945-52-5
- HS Code: 2811.19.00
- Synonyms: Pyrogenic silica, silica fume
2. Physical & Chemical Properties
- Physical State: Powder
- Color & Odor: White; odorless
- Surface Area: Approx. 200 m²/g
- Particle Size: Average primary particle size ~12 nm
- Bulk Density: Approx. 50 kg/m³ (loose bulk density)
- Solubility: Insoluble in water and organic solvents
- pH (in 4% suspension): 3.7 – 4.5
3. Safety & Hazard Attributes
- GHS Classification: May cause respiratory irritation (dust)
- Toxicity: Low toxicity; avoid inhalation of dust
- Exposure Limits: Follow occupational exposure limits for respirable crystalline silica as applicable
4. Storage & Handling Attributes
- Storage Conditions: Store in a dry, cool, well-ventilated area away from moisture and incompatible materials
- Container Type: Multi-layer kraft paper bags with polyethylene liner or bulk containers
- Shelf Life: Indefinite if stored properly
- Handling Precautions: Use dust control measures and respiratory protection; avoid dust generation
5. Regulatory & Compliance Attributes
- Complies with REACH, OSHA, TSCA, and other relevant chemical safety regulations
- Manufactured under Good Manufacturing Practices (GMP) when applicable, especially for pharmaceutical and food-grade products
- Meets ISO 9001 quality management standards
- Compliant with environmental and transport regulations including UN classification for safe handling
6. Environmental & Health Impact
- Biodegradability: Not applicable (inorganic material)
- Ecotoxicity: Low environmental impact; inert material
- Bioaccumulation: Not applicable
Safety Handling Precautions
- PPE Required: Respiratory protection, gloves, and eye protection recommended
- Handling Guidelines: Use local exhaust ventilation to minimize dust; avoid generating airborne dust
- Storage Measures: Keep containers sealed and dry
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if symptoms persist
- Skin Contact: Wash with soap and water
- Eye Contact: Flush with water for 15 minutes; seek medical help if irritation continues
- Ingestion: Rinse mouth; seek medical advice if necessary
Firefighting Measures
- Fire Hazards: Non-flammable
- Extinguishing Media: Use appropriate media for surrounding fire
- Hazardous Combustion Products: None known
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