Fumed Silica
Allzone Trading supplies fumed silica to manufacturers, formulators and industrial buyers in Toronto, the GTA, Ontario, Quebec and across Canada. Fumed silica is used as a rheology modifier, thixotrope and flow aid in liquid and powder systems. Grade, physical form and documentation are confirmed against supplier technical data sheets at quotation.
At a glance
- Product
- Fumed Silica
- Grades
- Grade confirmed at quotation
- Typical applications
- Anti-caking of industrial powders and salts · Free-flow additive in powder coatings · Detergent and cleaning powder flow
- Packaging
- Packaging confirmed at quotation against the supplier specification
- • Certificate of Analysis is provided against the confirmed shipment, grade and batch.
- • Manufacturer TDS and SDS are subject to grade and supplier confirmation and are available on request.
- • Grades, packaging and origin above are indicative sourcing options and are confirmed at quotation.
Available grades from container-direct sourcing
Grade confirmed at quotation
Grade, physical form and specification are quoted and confirmed against the supplier technical data sheet before any order is placed.
Typical applications
- Anti-caking of industrial powders and salts
- Free-flow additive in powder coatings
- Detergent and cleaning powder flow
- Rubber, plastics and adhesive powders
- Bulk conveying and silo discharge
Why Canadian buyers choose us
- Food, feed, agricultural and industrial grades quoted as separate specifications
- Grade, physical form and documentation confirmed in writing before order confirmation
- Supplier technical data sheet and safety data sheet provided for the quoted grade
- Freight arranged across Ontario, Quebec and Western Canada
- Quantities reviewed per enquiry, from smaller lots to container loads
Typical industries served
Material identity
Fumed silica (pyrogenic silica) — identifiers and the names buyers use
- CAS
- 112945-52-5
- Production route
- Fumed (pyrogenic)
- Surface treatment
- Hydrophilic or hydrophobic — declared per grade
- Surface area / addition rate
- UNKNOWN — declared per grade and confirmed against supplier documentation
Also searched as
Industry terminology
Identifiers are published for material identification. The exact specification of any offered grade is confirmed against supplier documentation at quotation.
Buyer intent coverage
Fumed silica (pyrogenic silica) — what it is, where it is used, how it is chosen
Fumed silica is bought for behaviour, not for bulk. Added at low levels to a liquid system, it builds a temporary structure that holds pigment in suspension and stops an applied film sagging, then breaks down under shear so the material still flows during application. Hydrophilic grades work in most resin systems; hydrophobic, surface-treated grades are selected where water sensitivity or a polar system would otherwise defeat the effect.
Primary uses
- Building thixotropy and sag resistance in coatings, adhesives and sealants
- Preventing pigment and filler settling during storage
- Reinforcing silicone elastomers
- Improving flow in fine, sensitive powders
Applications
- Sealant and adhesive manufacture in Ontario and Quebec
- Silicone rubber compounding
- Gel coats, composites and industrial coatings
- Specialty powder handling
Advantages
- Works at very low addition levels, so it rarely disturbs the rest of the formulation
- The most reliable route to sag control on vertical surfaces
- Hydrophobic grades extend the effect into systems where hydrophilic silica fails
Limitations to consider
- Requires proper high-shear dispersion; poor dispersion looks like a product failure
- Very low bulk density makes handling, dosing and dust control demanding
- Costs materially more per kilo than precipitated silica
- Addition level and performance are established on your own material and equipment; supplier literature values are starting points for a trial, not a specification.
- Mineral powders create airborne dust during transfer and bagging. Respirable crystalline silica content varies by mineral and by grade, so it is treated as an SDS and workplace-controls question rather than a published figure, and the SDS for the exact grade offered is the governing document.
How to choose the right grade
- State the production route you need — fumed or precipitated — before comparing prices
- Say whether the grade must be hydrophilic or hydrophobic, because surface treatment changes the whole result
- Describe the system it goes into: a liquid resin, a solvent system, a water-based system or a dry powder
- Confirm what dispersion equipment you have, since these materials only perform once properly dispersed
- Confirm the regulatory status the finished product requires
- Fumed (pyrogenic) and precipitated silicas are different products made by different routes. They are not interchangeable, and an enquiry that does not state the route usually has to be re-quoted.
- Exact specification is confirmed against supplier documentation at quotation.
Typical grades
- Hydrophilic grade
- Hydrophobic (treated) grade
- Silicone reinforcing grade
- Coating and adhesive rheology grade
- Reference grade names circulate as shorthand in enquiries and are treated here as search language only. An equivalent is established by comparing declared datasheet values and running a trial; no grade is presented as a drop-in replacement for another.
Comparable materials — how Fumed silica (pyrogenic silica) sits against alternatives
- Precipitated silica where cost per kilo dominates
- Organoclay in solvent systems
- Polymeric rheology modifiers in water-based systems
- Buyers looking for an alternative or second-source supplier should state the incumbent grade and the property being matched. Mineral fillers are rarely interchangeable on name alone: comparison depends on declared datasheet values and on a plant trial.
Comparable-material reference. Grade selection is confirmed at RFQ against your process.
Procurement coverage
How to specify, order and receive Fumed silica (pyrogenic silica)
Written for procurement, quality and technical buyers in Canada and the United States. No numeric price, MOQ, stock or lead-time value is published — those are confirmed per shipment in the quotation and against the confirmed batch.
How buyers specify at RFQ
- Production route — fumed (pyrogenic) or precipitated
- Surface area and structure as declared by the supplier for the exact grade
- Hydrophilic or hydrophobic (surface-treated) status
- Physical form — fluffy powder, densified powder, granules or dispersion
- Behaviour after dispersion in your specific system
- Regulatory status of the exact grade for the intended use
Packaging options (industry-standard)
- Bag or box format sized for dosing-unit refills rather than bulk intake
- Moisture-barrier or lined packaging where the additive is itself moisture sensitive
- Jumbo / FIBC bag where continuous dosing volumes justify it
- Packaging options and available pack sizes are confirmed with each quotation.
Storage & handling
- Store cool, dry and closed; these additives work by surface behaviour, and moisture pick-up removes the effect you paid for
- Keep containers closed between doses to avoid contamination and unnecessary dust exposure
- Use first-in, first-out rotation and respect any retest date declared on the batch
Documentation available
- Technical data sheet (TDS) stating the production route (fumed or precipitated), the declared surface area and the hydrophilic or hydrophobic status
- Safety data sheet (SDS) in the format required for Canadian import
- Certificate of analysis (COA) against the confirmed batch
- Food-additive or regulatory declaration where the grade is used in a regulated powder
- Documentation is confirmed per batch at quotation; availability depends on the grade and supplier offered.
RFQ checklist for fumed-silica-canada
Include these fields to receive an accurate Canada-landed quotation
- The material or system the mineral goes into, and the process it runs on
- The function you need it to perform and the problem you are trying to solve
- Particle size, brightness or purity window your specification calls for, in the convention your plant uses
- Annual volume and expected per-shipment quantity
- Packaging format your intake and feeding system can receive
- Documentation required per shipment
- Delivery province or port of discharge
- Production route required (fumed or precipitated)
- Hydrophilic or hydrophobic requirement
- Dispersion equipment available on your line
Technical & procurement detail
Where fumed silica is used+
Fumed silica is used as a rheology modifier, thixotrope and flow aid in liquid and powder systems. Allzone reviews the intended formulation or process with the supplier before quoting so the correct grade is offered.
Food, feed, agricultural and industrial grades are not interchangeable+
Food grade, feed grade, agricultural grade and industrial grade materials are supplied and quoted as separate specifications. A product supplied for one segment is not presented as suitable for another. State the intended segment and application in your enquiry so the correct grade and documentation are reviewed with the supplier.
How specifications are confirmed+
Allzone does not publish assumed purity, active content, particle size, moisture, origin, certification, regulatory approval, packaging or price values. Grade, specification and documentation are confirmed in writing against supplier technical data sheets and safety data sheets before an order is placed.
Frequently asked questions
What grade of fumed silica do you supply?+
The grade and specification are confirmed at quotation against the supplier technical data sheet. No purity, specification or certification value is published in advance.
Can I request a technical data sheet and a safety data sheet?+
Yes. Both the supplier technical data sheet and the safety data sheet for the quoted grade are provided on request and should be reviewed before purchase and use.
Do you deliver fumed silica across Ontario and Quebec?+
Yes. Freight is arranged across Toronto, the GTA, Ontario, Quebec and Western Canada, and the delivery method is confirmed with the quotation.
What quantities can you supply?+
Quantities are reviewed per enquiry, from smaller lots to container loads.
Technical knowledge for Fumed Silica Supplier — Ontario & Canada
Engineering and purchasing guidance written for this material — understand it, apply it, compare options, specify a grade, and fix production problems.
Foundation Articles
Comparison Articles
Related products
Materials commonly quoted alongside Fumed Silica by the same plants.
Precipitated Silica
Anti-caking and free-flow agent — anti-caking of industrial powders and salts
Synthetic Amorphous Silica
Anti-caking and free-flow agent — anti-caking of industrial powders and salts
Silicon Dioxide (E551)
Anti-caking and free-flow agent — free-flow of powdered food ingredients
Kaolin
Anti-caking and free-flow agent — anti-caking of granular fertilizer
Need a quote on Fumed Silica?
Request pricing, TDS/SDS and available documentation. We usually acknowledge enquiries within one business day; samples are subject to supplier availability and product classification.