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Product Specification

Commonly Used In Steel Smelting Casting Furnace Lining Flame Equipment Magnesium Oxide (MgO)

Parameters (Table)

• Excellent Thermal Stability & High Temperature Resistance——Magnesium oxide owns an ultra-high melting point of 2852℃ and boiling point of 3600℃, maintaining stable physical and chemical structures in high-temperature environments. It will not decompose, deform or deteriorate under extreme heat conditions, making it an ideal refractory and thermal insulation material for high-temperature industrial equipment.
• Superior Electrical Insulation Performance——With ultra-high room-temperature resistivity and stable dielectric strength, MgO can effectively isolate current and resist voltage breakdown. Its insulation performance remains stable under high temperature and high humidity conditions, which is irreplaceable in electrical and electronic insulation fields.
• Adjustable Chemical Activity & Strong Adsorption——By adjusting calcination temperature and process parameters, the product can realize controllable chemical activity. Light magnesium oxide has a large specific surface area and strong adsorption capacity, which can effectively adsorb harmful substances such as sulfide and heavy metal ions; heavy magnesium oxide presents stable and mild chemical reactivity.
• High Purity & Low Impurity Content——Adopting advanced purification and calcination technology, the product achieves MgO purity up to 99.5%, with strictly controlled trace impurities such as calcium, silicon and iron. It meets industrial, food and pharmacy grade safety standards, adapting to high-standard application scenarios.
• Good Dispersion & Compatibility——The powdery product has uniform particle size and excellent fluidity, which can be evenly dispersed in rubber, plastic, coating and other substrates. It has good chemical compatibility with most organic and inorganic materials, no precipitation or stratification after application.
• Safe & Environment-Friendly Properties——Magnesium oxide is non-toxic, odorless and non-corrosive, with no harmful substances volatilized during use. It is recyclable and biodegradable, compliant with international environmental protection standards such as REACH and ISO, and will not cause secondary pollution to the environment.

Product Advantages

• Outstanding Comprehensive Performance

  Integrating high temperature resistance, insulation, corrosion resistance, adsorption and chemical stability, MgO has more comprehensive performance than ordinary inorganic fillers. It can simultaneously optimize the heat resistance, insulation strength and structural stability of finished products, greatly improving product service life and use efficiency.
• Wide Application Versatility

  With diversified grades and customizable indicators, the product covers low-end industrial processing to high-end food, pharmacy and new material fields. It can meet the differentiated needs of different industries such as refractory manufacturing, rubber modification, environmental protection treatment and food fortification, with strong market adaptability.
• Stable & Reliable Quality

  The whole production process adopts strict quality control system, with consistent product particle size, purity and activity indicators. Batch stability is high, avoiding performance fluctuation of finished products caused by raw material differences, which is conducive to standardized and large-scale industrial production.
• Customizable Technical Indicators

  According to customer's actual application requirements, we can customize MgO purity, particle size, bulk density, chemical activity and other core indicators. Customized light/heavy type and special activity products can be developed to match personalized production processes and application scenarios.
• Standard Compliance & High Safety

  All grades of products comply with international industry standards including FCC, ISO9001 and REACH. Food and pharmacy grade products pass strict safety testing, with ultra-low heavy metal residues, ensuring safe application in food processing and pharmacy preparation fields.

Industry Sectors

• Refractories – Fire bricks, crucibles, furnace linings (high‑temp resistance).

• Environmental – Acid neutralisation, flue gas desulphurisation, heavy metal removal.

• Construction – Magnesia cement (lightweight, fireproof, strong).

• Electrical & Electronics – Insulation fillers, silicon steel coatings, ceramic substrates.

• Food & Pharma – Food & Health Products – Anti‑caking agent, acidity regulator, antacid, magnesium supplement.

• Advanced Materials – Nano‑MgO for catalysts, high‑performance ceramics, and microwave absorbers.

Technical

• Production – calcination of magnesite or Mg(OH)₂ at 400–1000 °C (light grade) or >1000 °C (heavy grade).
• Grades – purity from 85 % (industrial) to 99.99 % (high‑purity 4N); light (bulk density ≤0.15 g/mL) and heavy (≥0.25 g/mL).
• Key parameters – MgO content, loss on ignition, particle size distribution, specific surface area, and acid‑neutralising capacity.
• Standards – compliant with USP, FCC, EP, and other national pharmacopoeias where applicable.

Service

• Customized Solutions: We provide tailored solutions based on specific customer requirements for industries such as electronics, chemicals, and ceramics.
• Technical Support: Our team of experts offers comprehensive support in product selection, application guidance, and troubleshooting to ensure optimal use of the product.
• Quality Assurance: We rigorously control every stage of production to ensure that our 99.9% magnesium oxide meets international quality standards.
• Global Shipping and Delivery: We offer reliable and timely delivery to any location, ensuring that our customers receive their products as needed.

Announcements

When handling magnesium oxide, always store it in a tightly sealed container in a cool, dry, well‑ventilated area, as it readily absorbs moisture and carbon dioxide from the air, which can cause caking and reduce its reactivity. Avoid contact with strong acids or acid‑forming substances, as vigorous neutralisation reactions can generate significant heat and potentially cause splashing. During processing, wear appropriate personal protective equipment (dust mask, safety goggles, and gloves) to prevent inhalation of fine powder, which may irritate the respiratory tract, eyes, and skin. In case of large‑scale use, ensure local exhaust ventilation to minimise airborne dust concentrations. While MgO is relatively non‑toxic, accidental ingestion should be treated by rinsing the mouth and seeking medical advice. Spills should be swept up gently (avoiding dust generation) and disposed of in accordance with local environmental regulations. Finally, never mix MgO with flammable materials near ignition sources, as its dust cloud can pose a fire or explosion hazard under extreme conditions.