Fumed Silica (Cabosil / Aerosil Type)
White, extremely fine, fluffy powder · CAS 112945-52-5
Overview
Fumed Silica (Cabosil / Aerosil Type) (CAS 112945-52-5) is one of the industrial minerals, oils & resins products Suraj Chemicals supplies to industrial, institutional and manufacturing buyers across India from our Chennai base. It is commonly used for thixotropic/anti-settling and anti-sag additive in paints, coatings and sealants; reinforcing filler in silicone rubber and adhesives; anti-caking and free-flow agent in powders, among other applications in the industrial minerals, oils & resins category. We pack Fumed Silica (Cabosil / Aerosil Type) in 20/25 kg bags, and can arrange bulk, drum or tanker quantities for larger requirements — full characteristics, applications and downloadable documentation are below, or you can request a quote directly.
Specification Sheet — Characteristics
Download Specification Sheet (PDF)| Characteristics | Specifications |
|---|---|
| SiO2 Content | 99.8% Min |
| Specific Surface Area (BET) | 150 – 400 m²/g, grade-dependent |
| pH (4% Aqueous Dispersion) | 3.7 – 4.5 |
| Loss on Drying | 1.5% Max |
| Bulk Density | 40 – 60 g/L, typical |
Values above are well-established typical/standard specification properties for this product, compiled from published technical references — not a batch-specific lab report. Figures can vary batch to batch — request a current certificate of analysis with your order.
Applications
- Thixotropic/anti-settling and anti-sag additive in paints, coatings and sealants
- Reinforcing filler in silicone rubber and adhesives
- Anti-caking and free-flow agent in powders
Frequently Asked Questions
What is Fumed Silica (Cabosil / Aerosil Type)?
Fumed Silica (Cabosil / Aerosil Type) is supplied by Suraj Chemicals as white, extremely fine, fluffy powder, identified by CAS number 112945-52-5. It falls under our Industrial Minerals, Oils & Resins range — see the Specification Sheet table above for its full characteristics.
What is Fumed Silica (Cabosil / Aerosil Type) used for?
Typical applications include: Thixotropic/anti-settling and anti-sag additive in paints, coatings and sealants; Reinforcing filler in silicone rubber and adhesives; Anti-caking and free-flow agent in powders.
How should Fumed Silica (Cabosil / Aerosil Type) be stored and handled?
Store in a dry, covered area. Inert mineral powder — essentially non-hazardous; use a dust mask and avoid prolonged inhalation of fine powder.
What packaging and pack sizes does Suraj Chemicals supply Fumed Silica (Cabosil / Aerosil Type) in?
20/25 kg bags. Contact us if you need a different pack size, or a bulk/tanker quantity.
What is the shelf life of Fumed Silica (Cabosil / Aerosil Type)?
Typically around 24 months from date of manufacture when stored in original, unopened packaging under normal warehouse conditions, consistent with standard industry practice for this class of chemical. As with any industrial chemical, request the current batch's manufacturing date and a fresh certificate of analysis for orders where exact remaining shelf life matters.
Is Fumed Silica (Cabosil / Aerosil Type) hazardous to handle?
Yes — Fumed Silica (Cabosil / Aerosil Type) is acidic (pH 3.7 – 4.5) and can irritate skin and eyes on direct contact; flagged as hazardous in our own handling guidance and should be handled strictly per the SDS, with appropriate PPE; capable of releasing dust or vapour that is harmful if inhaled — use appropriate respiratory protection. Follow the storage and handling guidance above, use appropriate PPE, and download the Safety Data Sheet (SDS/MSDS) in the sidebar above for full GHS hazard, handling and PPE details.
Is a Specification Sheet, TDS or MSDS available for Fumed Silica (Cabosil / Aerosil Type)?
Yes — a downloadable Specification Sheet (PDF) with full characteristics and specifications is available above, and a downloadable Safety Data Sheet (SDS/MSDS) for Fumed Silica (Cabosil / Aerosil Type) is also available above.
Can I get a sample or discuss order quantity for Fumed Silica (Cabosil / Aerosil Type)?
Yes — use the Request Price & Availability button or WhatsApp us with your required quantity, and our team will confirm pricing, minimum order quantity, sample availability and delivery timelines for Fumed Silica (Cabosil / Aerosil Type).