Magnesium carbonate can be used as refractories, insulation materials for boilers and pipes, and as additives in food, medicine, cosmetics, rubber, ink, etc. White monoclinic crystal or amorphous powder. Non-toxic, odorless and gas-stable. Relative density 2.16. Slightly soluble in water, the aqueous solution is weakly alkaline, and its solubility in water is 0.02% (15℃). Easily soluble in acid and ammonium salt solutions. During calcination, pyridinemethylamine easily decomposes into magnesium oxide and carbon dioxide. When encountering dilute acid, it decomposes and releases carbon dioxide. Generally slightly soluble in water. It easily reacts with water when heated (when hard water is softened) to form magnesium hydroxide (because magnesium hydroxide is more difficult to dissolve than magnesium carbonate).
Equation: MgCO3+H2O=Mg(OH)2+CO2
Safe uses of magnesium carbonate
Pharmaceutical intermediates, antacids, desiccants, color protectants, carriers, anti-caking agents; used as additives and magnesium compensators in food; used in the production of chemical reagents in fine chemicals; used in rubber Reinforcing agent and filler; can be used as heat insulation and high temperature resistant fireproof and thermal insulation materials; important chemical raw materials in the manufacturing process of wires and cables. Manufacturing of high-grade glass products; enamel ceramics for surface brightening; manufacturing of magnesium salts, pigments, paints, daily cosmetics, shipbuilding, and boiler manufacturing. And used by athletes to wipe their hands during competitions. Used in the manufacture of magnesium salts, magnesium oxide, fire retardant coatings, inks, glass, toothpaste, rubber fillers, etc., and used in food as flour improvers, bread leavening agents, etc.
First aid measures for the safe use of magnesium carbonate
Inhalation: If inhaled, move victim to fresh air. Skin Contact: Remove contaminated clothing and wash skin thoroughly with soap and water. If you feel unwell, seek medical attention. Eye exposure to barium carbonate: Separate the eyelids and rinse with running water or saline. Get medical attention immediately.
Ingestion: Rinse mouth, do not induce vomiting. Get medical attention immediately. Advice to protect rescuers: Move victim to a safe location. Consult a doctor. Show this chemical safety data sheet to the doctor on site.
Safe use of magnesium carbonate and fire protection measures
Fire extinguishing media: extinguish fire with water mist, dry powder, foam or carbon dioxide fire extinguishing media. Avoid using direct flow of water to extinguish fires. Direct flow of water may cause flammable liquids to splash and spread the fire.
Fire-fighting precautions and protective measures: Firefighters must wear air-carrying respirators and full-body firefighting suits to fight fires in the upwind direction. Move containers away from the fire to an open area if possible. If the container in the fire scene changes color or makes a sound from the safety pressure relief device, it must be evacuated immediately. Isolate the accident scene and prohibit entry by unrelated persons. Contain and treat fire water to prevent environmental pollution.
Safe use of magnesium carbonate and emergency response to leakage
Protective measures, protective equipment and emergency procedures for workers: It is recommended that emergency responders wear air-carrying respirators, anti-static clothing, and rubber and oil-resistant gloves. Do not touch or step over spilled material. All equipment used during work should be grounded. Cut off the source of the leak as much as possible. Eliminate all sources of ignition. Warning areas are demarcated based on the areas affected by liquid flow, steam or dust diffusion, and irrelevant personnel are evacuated to safe areas from the crosswind or upwind directions.
Environmental protection measures: contain leaks to avoid environmental pollution. Prevent spills from entering sewers, surface water and groundwater.
Methods for containing and cleaning up leaked chemicals and disposal materials used: Small spills: Collect leaked liquids in sealable containers as much as possible. Absorb with sand, activated carbon or other inert materials and transfer to a safe place. It is prohibited to flush into the sewer. Large leakage: Build dikes or dig pits to contain the leakage. Seal drain pipes. Cover with foam to inhibit evaporation. Use an explosion-proof pump to transfer it to a tanker or a special collector, and recycle or transport it to a waste treatment site for disposal.
Safe use, handling and storage of magnesium carbonate
Operation precautions: Operators should receive special training and strictly abide by operating procedures. Operation and disposal should be carried out in a place with local ventilation or comprehensive ventilation facilities. Avoid eye and skin contact and avoid inhalation of vapors. Keep away from fire and heat sources. Smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. If canning is needed, the flow rate should be controlled and a grounding device should be installed to prevent the accumulation of static electricity. Avoid contact with incompatible materials such as oxidants. When handling, load and unload with care to prevent damage to packaging and containers. Empty containers may be harmful residues. Wash hands after use and prohibit eating and drinking in the workplace. Equipped with corresponding varieties and quantities of fire-fighting equipment and leakage emergency treatment equipment.
Storage precautions: Store in a cool, ventilated warehouse. The storage temperature should not exceed 37°C. Responsible for oxidation��. Food chemicals should be stored separately and avoid mixed storage. Keep container tightly sealed. Keep away from fire and heat sources. Warehouses must be equipped with lightning protection equipment. The exhaust system should be equipped with a grounding device to eliminate static electricity. Use explosion-proof lighting and ventilation settings. It is prohibited to use equipment and tools that are prone to sparks. The storage area should be equipped with emergency release equipment and suitable containment materials.
