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

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Isocyanate is an important chemical raw material, widely used in polyurethane, coatings, adhesives and other fields. However, due to its toxicity and flammability, strict compliance with relevant regulations is required to ensure safety during storage and transportation.

1. the toxicity of isocyanate

isocyanate is toxic to the human body, can enter the human body through inhalation, ingestion and skin contact, causing poisoning. The symptoms of poisoning include headache, dizziness, nausea, vomiting, chest tightness, cough, etc. In severe cases, it can lead to coma and death. Therefore, during storage and transportation, special attention needs to be paid to prevent leakage and contact.

2. the flammability of isocyanates

isocyanates are flammable and are prone to fire or explosion when exposed to open flames, high heat or oxidants. Therefore, during storage and transportation, special attention should be paid to fire prevention and explosion prevention.

3. isocyanate safe storage specification

1. The storage place should be dry, ventilated, cool, avoid direct sunlight and high temperature.
2. The storage container shall be well sealed to prevent leakage and volatilization.
3. Obvious safety warning signs shall be set up in the storage area to prohibit fireworks and open flames.
4. The storage area shall be equipped with corresponding fire fighting equipment and leakage emergency treatment equipment.

4. isocyanate safety transportation specifications

1. Before transportation, check whether the packaging is intact to prevent leakage and volatilization.
2. During transportation, it should be stable to avoid collision, extrusion and friction.
3. Transportation vehicles shall be equipped with corresponding fire fighting equipment and leakage emergency treatment equipment.
4. During transportation, high temperature and open fire should be avoided, and mixed transportation with oxidants, acids and other substances is prohibited.

5. isocyanate leakage emergency treatment

1. In case of leakage, the leakage source should be cut off immediately, mixed with sand, dry lime or soda ash and recycled to the waste treatment site.
2. In case of large leakage, embankments or pits shall be constructed for containment, which shall be transferred to tankers or special collectors by pumps, and recycled or transported to waste treatment sites for disposal.
3. In case of fire, the container shall be moved from the fire site to the open area as far as possible, and water shall be sprayed to keep the fire site container cool until the end of the fire extinguishing. Containers in a fire scene that have discolored or produced sound from the safety pressure relief device must be evacuated immediately. Fire extinguishing agent can be anti-soluble foam, dry powder, sand.

In short, isocyanate is an important raw material for chemical production, and its safety and stability are of great significance to ensure production safety and personnel health. Therefore, in the process of storage and transportation, it is necessary to strictly abide by the relevant regulations to ensure safety.

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