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[Chemical Knowledge]：Specification for storage and transport of polyisocyanates

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Polyisocyanate is an important chemical raw material, widely used in polyurethane, coatings, adhesives and other fields. However, due to its special chemical properties, polyisocyanates have certain safety risks during storage and transportation. In order to ensure its safe storage and transportation, a series of strict specifications need to be adhered. Safety
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1. Polyisocyanate
polyisocyanate is an organic substance containing an isocyanate group and is highly reactive. In air, the isocyanate groups react with moisture to form carbon dioxide and amines, releasing large amounts of heat. If the polyisocyanate is in too much contact with moisture or reacts too vigorously, a large amount of gas and heat may be generated, which may cause the container to rupture or explode.

In addition, polyisocyanate is also irritating and toxic, and has a stimulating effect on human skin and eyes. Inhalation of high-concentration polyisocyanate vapor can cause respiratory tract irritation, dizziness, headache and other symptoms. Therefore, special attention needs to be paid to safety measures when storing and transporting polyisocyanates.

2. polyisocyanate storage specification

1. The storage place should be dry, ventilated, cool, avoid direct sunlight and high temperature.
2. Storage containers shall be closed and intact to prevent the ingress of moisture and air.
3. The storage area should be away from fire source, heat source and oxidant, and avoid contact with acidic substances.
4. During the storage process, the tightness and integrity of the container should be checked regularly, and abnormal situations should be handled in time.

3. polyisocyanate transport specification

1. transport vehicles should meet the relevant standards, with explosion-proof, fire prevention, anti-static and other safety measures.
2. During transportation, it should be kept stable to avoid violent vibration and collision.
3. During transportation, keep away from fire source, heat source and oxidant, and avoid contact with acidic substances.
4. During transportation, the state of the goods and the tightness of the container should be checked regularly, and any abnormalities should be dealt with in time.

4. Emergency Treatment Measures

If a safety accident such as polyisocyanate leakage or fire occurs during storage or transportation, the following emergency treatment measures should be taken:

1. Immediately cut off the power supply and fire source in the accident area, and close the corresponding valves to prevent the accident from expanding.
2. Use special equipment to recycle the leakage to avoid diffusion and environmental pollution.
3. In the event of a fire, fire extinguishing equipment such as foam and dry powder shall be used to extinguish the fire, and the container and surrounding environment shall be cooled with water.
4. When dealing with accidents, personal protective equipment such as protective clothing and gloves should be worn to avoid direct contact with polyisocyanate.

In short, in order to ensure the safe storage and transportation of polyisocyanates, it is necessary to strictly abide by relevant specifications and operating procedures, strengthen management and supervision and inspection, and ensure that various safety measures are effectively implemented. At the same time, emergency rescue capabilities and drills should be strengthened to improve the ability to respond to emergencies.

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