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A toxic gas leak triggered a red alert in California after a storage tank containing Methyl Methacrylate (MMA) began leaking at a GKN Aerospace factory in Garden Grove. Fearing a major chemical release, authorities ordered nearly 40,000 residents to evacuate nearby areas.
What Is Methyl Methacrylate (MMA)?
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Methyl Methacrylate (MMA) is a colourless industrial chemical with a fruity smell. It evaporates quickly and is highly flammable, which means it can easily catch fire when exposed to heat, sparks, or flames. Its chemical formula is CH2=C(CH3)COOCH3.
Why Is MMA Considered Dangerous?
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MMA has a very low flash point, meaning it can release flammable vapours even at normal room temperature. Its vapours are heavier than air and can spread along the ground, collect in low-lying areas like drains or basements, and ignite if they come in contact with a spark or flame.
Where Is MMA Used?
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MMA is widely used in making acrylic plastics, resins, paints, adhesives, aircraft windows, lightweight plastic products, and construction materials. It is also used in medical and dental fields for bone cement, artificial teeth, dental crowns, and orthodontic products.
Health Risks Linked to MMA Exposure
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Health experts warn that exposure to MMA can cause skin irritation, burning sensation in the nose and throat, watery eyes, headache, dizziness, nausea, coughing, and breathing problems. In serious cases, it can affect the lungs and respiratory system.
Emergency Safety Measures During a Leak
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In case of a leak or unstable storage tank, emergency teams follow strict safety steps. These include continuously cooling the tank with water or foam, using stabilising chemicals to stop dangerous reactions, and evacuating nearby areas to reduce the risk of fire, explosion, or toxic exposure.