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Emergency Treatment of Maleic Anhydride Leakage


I. Hazards of maleic anhydride


1. Health hazards

Route of invasion: inhalation, ingestion and skin absorption. The dust and vapor of the product are irritant. Inhalation can cause pharyngitis, laryngitis and bronchitis. It may be accompanied by abdominal pain. Direct contact with eyes and skin can cause obvious irritation and burn. Chronic effects: chronic conjunctivitis, nasal ulcer and inflammation. It is allergic and can cause skin rash and asthma.


2. Toxicological data and environmental behavior

Acute toxicity of maleic anhydride: LD50400 mg / kg (oral administration in rats); 2620mg / kg (rabbit skin)


Hazard characteristics of maleic anhydride: in case of high heat, open fire or contact with oxidant, there is a risk of combustion. It is corrosive.


Combustion (decomposition) products: carbon monoxide, carbon dioxide.


II. Emergency treatment of maleic anhydride


1. Leakage emergency treatment

Isolate the contaminated area, set up warning signs around, and it is suggested that emergency treatment personnel should wear gas masks and chemical protective clothing. Don't touch the leakage directly. Collect it in a dry and clean container with a clean shovel and transport it to the waste disposal site. If there is a large amount of leakage, it should be collected and recycled or disposed innocuously.


2. Protective measures

Respiratory system protection: when the concentration in the air exceeds the standard, wear a gas mask.


Eye protection: wear safety glasses.

Protective clothing: wear work clothes (made of anticorrosive materials).


Hand protection: wear rubber gloves.

Others: shower and change clothes after work. Pay attention to personal hygiene.


3. First aid measures

Skin contact: take off contaminated clothes and immediately rinse with water for at least 15 minutes. In case of burns, seek medical treatment.


Eye contact: lift eyelids immediately and rinse with flowing water or normal saline for at least 15 minutes. Seek medical treatment.


Inhalation: quickly leave the scene to fresh air. Keep respiratory tract unobstructed. Perform artificial respiration if necessary. Seek medical treatment.


Ingestion: gargle immediately and drink milk or egg white. Seek medical treatment.


Fire extinguishing methods: fog water, foam, carbon dioxide and sand.


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