Magnesium fluoride is a water-soluble white powder that is most commonly used as anti-reflective coating on glass. To convert the powder to coating, it is vacuum melted into clear ingots. These ingots are then crushed for vacuum coating. It is a tough material that is resistant to chemical etching and laser damage. It can also be toxic. Therefore, special care needs to be taken when handling magnesium fluoride.
Short-term Effects
Exposure to magnesium fluoride can occur through the skin, eyes, inhalation or ingestion. It can cause rashes, skin inflammation and eye irritation. If inhaled, it can cause respiratory tract and mucous membrane irritation that can lead to asthma attacks, excessive thirst and sweating. Ingestion of magnesium fluoride can cause vomiting, diarrhea, muscle weakness and decreased neurological activity in the central nervous system.
Long-term Effects
Inhalation of magnesium fluoride can cause pulmonary fibrosis. Skin contact can lead to dermatitis. It can also have adverse effects on the kidneys. The excess fluorine distributed in the body by magnesium fluoride can lead to fluorosis. In this condition, fluorine causes bone to harden and increases the risk of bone fracture. Eye contact can cause corneal damage and even blindness. Choking, loss of consciousness or death can occur from severe over-exposure to magnesium fluoride.
First Aid
Move the victim to fresh air if magnesium fluoride is inhaled. Oxygen may be required in severe cases. For ingestion, drinking one to two glasses of milk or water plus vomiting may help. If magnesium fluoride comes in contact with the skin, remove all affected clothing and wash the area with mild soap and water. For eye irritation, flush the eyes thoroughly with water for at least 15 minutes. If any type of bodily contact is made with magnesium fluoride, seek medical assistance immediately.
Safe Handling
Magnesium fluoride should be stored in an air-tight container and kept in a cool, dry area. Water should not be added to it. Splash goggles, neoprene gloves, lab coat, boots and a dust respirator will help protect against exposure. A full chemical suit with a self-contained respirator is the best protection. It is important to keep the work area clean in case of a spill. After handling the material, wash down thoroughly. Magnesium fluoride is hazardous. Before handling it, a specialist should be consulted.
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