Reactive Magnesium Oxide (Caustic Calcined Magnesia)
Allzone Trading supplies reactive magnesium oxide to board manufacturers, specialty panel producers and decorative casting formulators across Canada. Combined with magnesium chloride or magnesium sulfate solution, reactive MgO forms a fast-setting, high early strength, non-combustible binder used where Portland systems are too slow or too heavy. Reactivity, purity and particle size are confirmed against supplier technical data at quotation.
At a glance
- Product
- Reactive Magnesium Oxide (Caustic Calcined Magnesia)
- Grades
- Confirmed at quotation
- Typical applications
- Magnesium oxide board and panel manufacturing · Decorative wall and ceiling panel casting · Fast-set specialty flooring and screed systems
- Packaging
- Packaging and pack size confirmed at quotation against the grade supplied
- • 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
Typical applications
- Magnesium oxide board and panel manufacturing
- Decorative wall and ceiling panel casting
- Fast-set specialty flooring and screed systems
- Non-combustible building product manufacturing
- Lightweight composite panel production
- Specialty repair and industrial castings
Why Canadian buyers choose us
- Enquiries handled against your part, mould and process — not a fixed stock list
- Grade, working properties and mix data confirmed in writing before order confirmation
- Supplier technical data sheet and safety data sheet provided for the grade actually offered
- LTL and FTL freight to studios, precast plants, fabricators and distributors across Ontario, Quebec and Western Canada
- Quantities reviewed per enquiry, from trial kits through to pallet and container programmes
Typical industries served
Material identity
Reactive Magnesium Oxide — identifiers and the names buyers use
- Material type
- Caustic calcined magnesium oxide used as a binder component
- CAS
- 1309-48-4
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
Reactive Magnesium Oxide — what it is, where it is used, how it is chosen
Reactive magnesium oxide is the binder component of magnesium oxychloride, or Sorel, systems used for decorative panels, specialty flooring and some artificial stone products. It reacts with magnesium chloride solution rather than with water alone, which gives rapid strength and a distinctive hard, dense finish. It is a niche route with a clear caveat: moisture sensitivity in service is a real design constraint, not a formality.
Primary uses
- Binder formation with magnesium chloride
- Rapid strength development
- Non-Portland binder chemistry
Applications
- Magnesium oxychloride (Sorel) cement systems
- Decorative and cast panel products
- Boards and lightweight panel manufacture
- Specialty flooring systems
Advantages
- Develops strength rapidly, which suits fast-turnaround decorative panel production
- Produces a hard, dense surface that takes a fine finish
- Enables product categories that Portland systems do not serve well
Limitations to consider
- Magnesium oxychloride systems are moisture-sensitive in service and are not suited to wet or exterior exposure without specific design
- Reactivity varies significantly by source and calcination, and it governs the whole system
- Reactivity, purity and composition are declared by the supplier for the exact material supplied
- Dosage, addition rate, water content and binder proportions are decided by your own mix design and trial batches, not by a catalogue figure. Supplier literature ranges are a starting point for that development work and are not reproduced here as a specification.
- Where the finished element goes into a building, the performance that matters is the performance of your element under the applicable code and project specification, not the property of a single ingredient. Testing and conformity evidence for the finished product are the responsibility of the producer and are established by project-specific testing.
- Mix ratio, pot life, working time, demould time, full-cure schedule, hardness, tear strength, elongation, shrinkage, viscosity and temperature resistance are properties of one specific supplier system. They are never quoted here from memory or by analogy with a similar product; they are read from the supplier data sheet for the exact material offered and confirmed at quotation.
How to choose the right grade
- Start from the element being produced and the specification it has to satisfy, because binder, aggregate and admixture choices are decided together rather than one at a time
- State the placing method — poured, vibrated, sprayed or pressed — since rheology requirements follow from it
- Describe the curing regime and the plant conditions, including whether production continues through a Canadian winter
- Confirm the service environment of the finished element, since moisture exposure decides whether this route is viable at all
- Specify the reactivity the system needs and let the supplier state what their material delivers
- Mould-making and casting behaviour depends on the pattern, the shop temperature and humidity, the mixing method and the operator. A production-representative trial on your own pattern and in your own shop conditions is the only honest way to qualify a material before a run is committed.
- Exact specification is confirmed against supplier documentation at quotation.
Typical grades
- Products the supplier classifies by reactivity and calcination route
- Products intended for oxychloride binder systems as designated by the supplier
- Buyers search this category by grade name, and those names describe what the workshop needs rather than what is asserted here. Which grade a specific offer corresponds to, and what the supplier declares for it, is read from the technical documentation issued for the exact material quoted.
- Materials in this category interact: rubbers, releases, sealers, resins, pigments and fillers can inhibit cure, stain a surface or shorten mould life when they are combined outside the combinations the supplier has tested. State every material already in the process at enquiry so compatibility is checked against supplier documentation rather than discovered on the shop floor.
- Reactive materials age in the container, and moisture-sensitive systems age faster once opened. Order against real consumption rather than against a discount, and confirm the shelf life the supplier states for the exact product and pack.
Comparable materials — how Reactive Magnesium Oxide sits against alternatives
- Portland or calcium aluminate systems where their behaviour suits the product
- Gypsum systems in interior non-structural products
- Shops looking for an alternative, replacement or second-source supplier should state the incumbent product, the supplier system currently approved and the property being matched. Equivalence on family name alone is not equivalence in production: cure profile, surface behaviour, colour and release characteristics all shift between sources, so a side-by-side trial is planned before a changeover.
Comparable-material reference. Grade selection is confirmed at RFQ against your process.
Procurement coverage
How to specify, order and receive Reactive Magnesium Oxide
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
- The exact product identity and supplier system the shop needs, including the component set for a multi-part system
- The process it will be used in, and the equipment used to mix, pour, spray or apply it
- The pattern, mould or substrate it will contact, and every other material already in that process
- The properties the supplier must declare on the data sheet for your application
- The documentation set required before the material can enter production
- Exact specification is confirmed against supplier documentation at quotation.
Packaging options (industry-standard)
- Bag formats are the usual option for powders and dry blends
- Bulk bag (FIBC) formats are used by producers running continuous volume
- Smaller pails or boxes are used where the material is dosed in small quantities
- Packaging options and available pack sizes are confirmed with each quotation.
Storage & handling
- Store sealed, dry and off the floor; humidity swings change the behaviour of powders and dry blends
- Segregate from incompatible chemistry and protect from contamination by other powders in the shop
- Control dust at transfer points in line with the safety data sheet for the product
- Rotate stock by receipt date and record the lot used against each production batch
- Canadian winter transport and storage matter here: several materials in this category thicken, crystallise, freeze or lose performance at low temperature, and recovery behaviour after freezing is product-specific. Confirm cold-weather handling and shop conditioning guidance against the supplier documentation before a winter delivery.
- This category includes reactive chemistry, respirable mineral dust, peroxides and solvent-borne products. Ventilation, personal protection, segregated storage and disposal requirements come from the safety data sheet for the exact product and from the requirements of the provincial regulator for your site.
Documentation available
- Technical data sheet (TDS) for the exact product offered, stating working properties as the supplier declares them
- Safety data sheet (SDS) in the format required for Canadian import, in English and French where the receiving site requires it
- Certificate of analysis (COA) or batch documentation where the supplier issues it for the confirmed lot
- Handling, mixing and storage instructions issued by the supplier for the exact system
- Test reports or conformity statements where the project specification requires them and the supplier issues them
- Documentation is confirmed per batch at quotation; availability depends on the grade and supplier offered.
- Ask for the documentation pack against the exact product at the enquiry stage rather than after the order. Documentation availability differs by supplier and by manufacturing site, and in this category the data sheet is the only place where the working properties of a system are legitimately stated.
RFQ checklist for reactive-magnesium-oxide-canada
Include these fields to receive an accurate Canada-landed quotation
- The exact product or supplier system required, and the incumbent it is replacing where there is one
- The process, equipment and shop conditions the material will be used in
- Volume per order and expected annual usage, so the offer is built on real consumption
- Pack format your shop or plant can physically receive and handle
- Documentation required before the material can be used in production
- Delivery province or receiving location in Canada
- The mix design the material enters, and the role it plays in that mix
- The element produced and the specification or project requirement it is built to
- Consumption per batch and expected annual volume, so bulk versus bagged supply can be compared
- Landed cost in Canada is driven by pack format, delivery province and receiving arrangements as much as by unit price, and dense mineral products and dilute liquids both carry weight that is not function. Quotations are compared delivered to your shop or plant rather than ex-works.
Technical & procurement detail
Why anyone leaves Portland cement+
MgO systems set fast, bond well to organic fillers such as wood and straw, and stay non-combustible. That combination lets manufacturers make thin, light, fire-resistant boards that a Portland system would not deliver at the same thickness or cycle time.
Reactivity is the whole specification+
Calcination temperature determines how reactive the magnesia is, and dead-burned magnesia will not build a binder at all. Grades are selected on measured reactivity, and a change of source is treated as a formulation change.
Moisture sensitivity in service+
Oxychloride systems are known for moisture movement and, in poorly designed products, chloride-related corrosion of embedded metal. Serious producers control the salt ratio, add modifiers and design the product for its exposure rather than relying on the binder alone.
Specification options+
Working properties are configurable options within this canonical product, not separate products. Depending on the family, that can include grade, viscosity, mix ratio, pot life and demould time, hardness, colour, particle size or fibre length, and pack format. No configuration is presented as stocked or approved until it is confirmed against the supplier's technical data for the exact material offered. Supplier grade names, factory codes and manufacturer brands are not published here.
What to include in your enquiry+
Tell us the binder system, reactivity requirement, monthly tonnage, packaging and delivery location.
Frequently asked questions
Which reactivity grade is required?+
Reactivity is a specification option within this canonical product and is matched to the system by supplier technical data and trial.
Is the salt solution supplied separately?+
Magnesium chloride is published as its own canonical product, since the two materials are ordered and stored separately.
Are technical documents provided before ordering?+
Yes. The supplier technical data sheet and safety data sheet for the exact grade offered are provided with the quotation, and the working properties in those documents govern — not any general description on this page.
What quantities are quoted?+
Quantities are reviewed per enquiry, from trial quantities through to pallet and full container programmes for production users and distributors.
Technical knowledge for Reactive Magnesium Oxide Supplier — MgO Binder | Canada
Engineering and purchasing guidance written for this material — understand it, apply it, compare options, specify a grade, and fix production problems.
Comparison Articles
Related products
Materials commonly quoted alongside Reactive Magnesium Oxide (Caustic Calcined Magnesia) by the same plants.
White Portland Cement
Cast stone and architectural precast units
Calcium Aluminate Cement
Rapid-set repair mortars and patching compounds
Silica Fume (Microsilica)
Anti-caking and free-flow agent — gFRC mixes for improved density and reduced permeability
Need a quote on Reactive Magnesium Oxide (Caustic Calcined Magnesia)?
Request pricing, TDS/SDS and available documentation. We usually acknowledge enquiries within one business day; samples are subject to supplier availability and product classification.