One ore, five decisions
Every grade starts as the same magnesite. What changes is how far it is refined, and once, what it is refined into.
1 feedstock, 5 grades
One mineral lattice, five specifications, matched to five segments. Every grade is manufactured to its MagVanta specification under FDA-registered, ISO-certified quality systems, tested and released in a US laboratory, and delivered from US stock with a documented chain of custody.
Pricing is quoted, not published. It moves with grade, volume, packaging and delivery point.
Not sure which grade? Purity sets the tier, reactivity sets the performance. Tell us the application and we will name the grade, send the specification, and quote a delivered US price. If none of the five fits, give us the grade or the parameter you need and the material is manufactured to that specification instead.
Caustic-calcined, 97% MgO, agricultural and environmental
The industrial workhorse: high-reactivity caustic calcined magnesia at volume.
Caustic-calcined, 98% MgO, technical
Low-iron technical magnesia for rubber, paper, fuel and drilling systems.
Pharmaceutical and supplement grade, 99% MgO
Pharmaceutical and supplement grade magnesium oxide for supplement, antacid and personal care formulation.
Very-high-reactivity, 99% MgO
Our highest-surface-area magnesia, for systems where reaction speed is the specification.
Pharmaceutical and supplement grade, 99% magnesium hydroxide
Pharmaceutical and supplement grade magnesium hydroxide for ingredient use and halogen-free flame retardancy.
How the grades relate
Every grade starts as the same magnesite. What changes is how far it is refined, and once, what it is refined into.
1 feedstock, 5 grades
First pass off the ore. Fast-reacting, priced for volume, built for agriculture and effluent work.
2.80 % CaO
Better ore, tighter sorting. Calcium oxide falls and iron drops with it. The grade rubber, paper and fuel systems specify by name.
2.0 % CaO
Calcium oxide bottoms out. This is as far as ore selection and beneficiation can take one oxide.
0.75 % CaO
One grade splits in two here. Same assay, same certificate, held in the kiln differently. One reacts twice as fast.
99 % MgO, both
Off the trunk entirely. Add water to the oxide and mass grows. Hydrated, never further purified from the oxide.
44.7 % mass added
Pick by calcium tolerance, reaction speed or compound. Every path ends the same way: a lot, US-verified, ready to quote.
5 grades, 1 lattice
At a glance
| SKU | Chemistry | Purity | Reactivity | Particle size | Target segments | HTS |
|---|---|---|---|---|---|---|
| MgVanta CCM 97, 97% caustic calcined magnesium oxide | MgO | 97% MgO min. | 20-30 s (22 s typical) | 75 µm (200 mesh) | Agriculture and soil amendment, Environmental and water applications, Industrial process chemistry | 2519.90.2000 |
| MgVanta CCM 98, low iron technical magnesium oxide | MgO | 98% MgO min. | 24 s | 45 µm (325 mesh) | Rubber compounding, Paper and pulp, Fuel additives, Drilling systems, Specialty industrial chemistry | 2519.90.2000 |
| MgVanta USP MgO 99, pharmaceutical grade magnesium oxide | MgO | 99% MgO min. as ignited | 20-30 s | 45 µm (325 mesh) | Dietary supplements, Antacid active ingredient, Personal care formulation, Pharmaceutical excipient, Food fortification | 2519.90.2000 |
| MgVanta USP MgO 99 VHR, very high reactivity magnesium oxide | MgO | 99% MgO min. | 12-20 s | 45 µm (325 mesh) | High-performance wastewater, Specialty chemical synthesis, Fast pH neutralization, Reaction-rate-critical processes, Fast-dissolution supplement formulation | 2519.90.2000 |
| MgVanta USP Mg(OH)2 99, pharmaceutical grade magnesium hydroxide | Mg(OH)2 | 99% Mg(OH)2 min. | Not specified | Not specified | Antacid active ingredient, Personal care formulation, Halogen-free flame retardant, Pharmaceutical suspension, Wastewater pH control | 2816.10.0000 |
HTS classifications are shown for the convenience of technical and procurement readers. Confirm the subheading with your own broker.
Documentation
Every grade on this page ships with a MagVanta certificate of analysis for the specific lot, a MagVanta technical data sheet, and a GHS-compliant MagVanta safety data sheet. All three report what our own US testing program measured.
Tell us the grade, the volume and the application. We will come back with a delivered US price, current stock position, and the full documentation package for that grade.