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[Chemical Knowledge]：Specification for storage and transportation of EVA

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EVA (ethylene-vinyl acetate copolymer) is a common chemical raw material, widely used in plastics, rubber, coatings and other fields. Due to its special chemical properties, EVA needs to comply with certain safety regulations during storage and transportation to ensure the safety of personnel and the environment. This article will detail the safety storage and transportation specifications of EVA.

1. the physical and chemical properties of EVA

EVA is a colorless, transparent, granular or flaky solid with high thermal stability and chemical resistance. However, in the presence of high temperature, high pressure and oxidant, EVA will decompose and burn, resulting in toxic and harmful gases.

2. EVA storage specification

1. storage place should be dry, ventilated, cool, avoid direct sunlight and high temperature environment.
2. The storage container shall be made of materials with good sealing performance to prevent EVA from contacting with air.
3. During storage, the container and seal should be checked regularly to ensure that they are intact and prevent EVA leakage.
4. Fire-fighting equipment shall be set up in the storage area, and regular safety inspections and drills shall be carried out to ensure the effectiveness of safety facilities.

3. EVA transport specifications

1. Transport vehicles should have the appropriate qualifications and documents, transport personnel should be professionally trained to understand the nature of EVA and safety procedures.
2. In the process of transportation, smooth driving should be maintained to avoid severe vibration and collision, and to prevent EVA packaging damage.
3. Transport vehicles shall be equipped with corresponding fire-fighting equipment and leakage emergency treatment equipment to deal with emergencies.
4. During transportation, high temperature environment and open fire should be avoided to prevent EVA from burning and exploding.

4. EVA leakage emergency treatment

1. In case of EVA leakage, the leakage source should be cut off immediately, mixed with sand, dry lime or soda ash and recycled to the waste treatment site for disposal.
2. When there is a large amount of leakage, embankments or pits should be built and covered with foam to reduce steam disasters. Transfer to tank truck or special collector with explosion-proof pump, recycle or transport to waste treatment site for disposal.

5. EVA fire protection measures

1. fire extinguishing method: fire extinguishing agent, mist water, foam, dry powder, carbon dioxide, sand.
2. Emergency treatment: eliminate all ignition sources. Isolate the leak contaminated area and restrict access. It is recommended that emergency personnel wear dust mask (full face mask) and protective clothing. Collect with a clean shovel in a dry, clean, covered container. If there is a large amount of leakage, collect and recycle or transport to waste treatment site for disposal.

6. EVA operation disposal and storage

1. operation precautions: closed operation, provide good natural ventilation conditions. Operators must be specially trained and strictly abide by the operating procedures. Operators are advised to wear self-priming filter dust masks, chemical safety goggles, anti-poison penetration overalls and rubber gloves. Keep away from fire and heat sources. Smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Avoid creating dust. Avoid contact with oxidizing agents. Handle lightly to prevent damage to packaging and containers. Equipped with corresponding types and quantities of fire fighting equipment and leakage emergency treatment equipment. Empty containers may leave harmful substances.
2. storage precautions: stored in a cool, ventilated warehouse. Keep away from fire and heat source. Should be stored separately from the oxidant, do not mix storage. Equipped with the corresponding variety and quantity of fire fighting equipment. The storage area shall be provided with suitable materials to contain spills.

In short, in order to ensure the safety of EVA in the production, transportation and storage process, it is necessary to strictly abide by relevant safety regulations, strengthen safety management, improve safety awareness, and ensure the safety of personnel and the environment.

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