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Home / All / Rubber & Plastic Materials And Additives / Magnesium Oxide / High Purity Magnesium Oxide 95% - Flame Retardant for Rubber & Plastic, OEM Supply
High Purity Magnesium Oxide 95% - Flame Retardant for Rubber & Plastic, OEM Supply
| Categories | Magnesium Oxide |
|---|---|
| Brand | Richase Specialty Chemical Additives Supplier |
| Model | 80%, 85%, 90%, 92%, 94%, 95% 96% |
| Categories | Magnesium Oxide |
| Product name | Magnesium Oxide |
| Color | Off-White |
| Packing | 25kg/50kg/1000kg PP/PE neutral bag |
| Loading | 20-27mt/20fcl |
| OEM Packing | accepted |
| CAS No. | 1309-48-4 |
| Delivery time | within 20 days after payment receipt |
| Free sample | yes |
| FOB port | Dalian/Qingdao/Tianjin port |
| Terms of Payment | L/C, D/A, D/P, Western Union, MoneyGram, T/T |
| Update Time | Sep 13,2025 |
Detail Information
What is magnesium oxide
Magnesium oxide (MgO), or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium . Magnesium oxide (MgO) is a versatile additive used in rubber and plastic formulations for curing, stabilization, flame retardancy, and reinforcement. Below are its key roles and applications in both industries.
Core Features in Rubber & Plastic
1. Vulcanization & Curing Agent: Acts as an acid acceptor and cross-linking agent in halogenated rubbers (e.g., chloroprene/CR, chlorosulfonated polyethylene/CSM). Prevents premature scorching (early vulcanization) during rubber processing.
2. Flame Retardancy & Smoke Suppression: Endothermic decomposition absorbs heat, slowing fire spread. Releases water vapor (H₂O) when heated, diluting flammable gases. Works synergistically with aluminum trihydrate (ATH) and other flame retardants.
3. Thermal Stabilizer for Plastics: Neutralizes HCl gas released during PVC degradation. Prevents discoloration and chain scission in high-temperature processing.
4. Reinforcing Filler: Improves mechanical strength and abrasion resistance in rubber. Enhances dimensional stability in plastics.
5. Acid Scavenger & Processing Aid: Neutralizes acidic byproducts in polymers (e.g., residual catalysts).Improves flow properties during extrusion/molding.
magnesium oxide
Richase Magnesium Oxide (92-95% Purity): Advanced calcination process ensures superior reactivity and low heavy metal content (<50ppm). Granular form prevents dust and enables controlled release.
Multi-Certification Compliance:
Feed Grade (EU Regulation 1831/2003)
Agricultural Grade (ISO 9001)
Industrial Grade (REACH)
Core Applications & Benefits:
① Agriculture & Soil Health
Neutralizes acidic soils 3x faster than lime
Corrects magnesium deficiency in crops (e.g., citrus chlorosis)
Increases phosphate availability by 25%
② Animal Feed & Nutrition
Prevents grass tetany in cattle with 98% bioavailability
Reduces feed caking as anti-humectant
Optimized particle size (1-3mm) for premix blending
③ Industrial & Mining
Wastewater treatment: Removes 90% heavy metals at pH 10.5
Flame-retardant filler for mining conveyor belts
Refractory material for smelting furnaces
④ Sustainable Sourcing
Produced from own magnesium mines in Liaoning, China
Bulk supply with custom granulation (2-5mm available)
Proven in African copper mines for AMD treatment
magnesium oxide Specifications：
| Product: | TITANIUM DIOXIDE | |
| CAS No.: | 1309-48-4 | |
| Molecular Formula: | MgO | |
| Molecular Weight： | 40.304 | |
HS CODE: | 25199030 | |
Properties: | powder | |
Specifications： | ||
Items | Unit | Specifications |
Purity as MgO | %,approximate | 80-95% |
END | ||
Product Display：
magnesium oxide
High Purity Magnesium Oxide
Magnesium Oxide for plastic
Application
1）In Rubber:
Vulcanization Control: Acts as a co-activator with zinc oxide (ZnO) to optimize sulfur-based curing in NR, SBR, and BR rubbers.
Acid Scavenger: Neutralizes harmful HCl byproducts in halogenated rubbers (CR, CSM, FKM), preventing polymer degradation.
Thermal Stability: Enhances heat resistance in high-temperature applications (e.g., seals, gaskets, tire components).
Reinforcement: Improves hardness and modulus as a semi-reinforcing filler.
Processing Aid: Controls viscosity and reduces sticking during mixing.
Electrical Insulation: Used in EPDM and silicone rubber for cable insulation.
2）In Plastics:
Flame Retardancy: Works synergistically with Mg(OH)₂ or ATH in PVC, PP, and PE to suppress flames and smoke.
Thermal Stabilizer: Prevents degradation in PVC by neutralizing acidic byproducts.
Mechanical Reinforcement: Increases stiffness in PP, PE, and nylon (PA) and acts as a nucleating agent.
Antibacterial Properties: Applied in food packaging and medical plastics.
Acid Scavenger: Protects engineering plastics (PBT, PET, PA) from acid-induced corrosion.
Applications & Solutions
plastics
High Opacity & Brightness – Provides excellent hiding power and vibrant colors.
plastics
Chemical Resistance – Inert to acids, alkalis, and solvents.
Rubber products
UV & Weather Resistance – Prevents cracking, fading, and aging in outdoor rubber products.
Rubber
Reinforcement – Enhances mechanical strength and abrasion resistance.
Related Product
Titanium dioxide: OEM/ODM solutions & wholesale supply for global brands. High purity for enhanced performance.
Magnesium Sulphate Heptahydrate Crystal MgSO4.7H2O Feed Grade with good price.
Magnesium Sulphate Monohydrate Powder MgSO4 Feed Grade with good price.
FAQ
What is the primary role of magnesium oxide in rubber?
In Rubber:
Acts as an acid scavenger and vulcanizing agent in chloroprene rubber (CR) and other halogenated elastomers.
Prevents premature curing (scorching) and improves heat resistance.
Enhances mechanical properties (tensile strength, modulus).
How does MgO function as a flame retardant in plastics?
Mechanism:
Endothermic decomposition absorbs heat, slowing combustion.
Releases water vapor (H₂O), diluting flammable gases.
"Works synergistically with aluminum trihydrate (ATH) or antimony trioxide
Key Benefit: Reduces smoke and toxic gas emissions in PVC, cables, and construction materials.
Key Benefit: Reduces smoke and toxic gas emissions in PVC, cables, and construction materials.
Can MgO replace traditional thermal stabilizers in PVC?
Yes, especially where eco-friendly alternatives are needed.
Advantages over lead-based stabilizers:
Non-toxic, REACH & RoHS compliant.
Effective HCl scavenger, preventing PVC degradation.
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