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

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MDI (diphenylmethane diisocyanate) is a common chemical raw material, widely used in polyurethane, rubber, coatings and other fields. However, MDI has certain toxicity and danger, so it is necessary to strictly abide by relevant regulations during storage and transportation to ensure safety. This article will detail the safe storage and transportation specification of MDI.

1. the physical and chemical properties of MDI

MDI is a colorless or slightly yellow transparent liquid with a pungent odor. It is easily miscible with water, alcohol, ether and other solvents, but insoluble in hydrocarbon solvents. MDI is chemically active and can react with a variety of compounds to generate corresponding derivatives.

2. the risk
of MDI
MDI has certain toxicity, which can cause irritation and allergy of human skin and respiratory system. Prolonged exposure may cause occupational diseases. In addition, MDI is also flammable and may cause fire or explosion when exposed to open flames, high heat and other conditions.

3. MDI safety storage specification

1. storage place should be dry, ventilated, cool, away from fire, heat and other dangerous areas.
2. Storage containers shall be well sealed to prevent leakage and volatilization.
3. The storage area shall be equipped with corresponding fire fighting equipment and leakage emergency treatment equipment.
4. During the storage process, the safety status of containers and storage areas should be checked regularly, and abnormal situations such as leakage should be found and handled in time.

4. MDI safety transportation specifications

1. Transport vehicles should have corresponding qualifications and certificates, and drivers should undergo professional training and be familiar with the nature and transportation requirements of MDI.
2. During transportation, the vehicle shall be kept stable to avoid violent vibration and collision.
3. Transportation vehicles shall be equipped with corresponding fire fighting equipment and leakage emergency treatment equipment.
4. Relevant road traffic safety laws and regulations shall be observed during transportation to ensure driving safety.

5. MDI leakage emergency treatment

1. In case of leakage, the leakage source should be cut off immediately, and the leakage should be covered with sand, dry lime and other adsorption materials.
2. In case of a large amount of leakage, embankments or pits shall be constructed and transferred to the tank car or special collector by pump.
3. If the leakage enters the restricted space such as sewers and drains, it should be removed immediately and the discharge outlet should be flushed with plenty of water.
4. The operator should wear professional protective equipment, such as protective gloves, protective glasses, etc., to avoid direct contact with the leakage.

6. of MDI occupational disease protection

1. contact MDI operators should regularly occupational health examination, timely detection and treatment of occupational diseases.
2. The workplace should be equipped with ventilation facilities to maintain air circulation and reduce the concentration of MDI.
3. Operators should wear professional protective equipment, such as gas masks, protective gloves, etc., to reduce the harm of MDI to human body.

In short, MDI as a common chemical production raw materials, its safety and risk coexist. In the process of storage and transportation, relevant specifications should be strictly observed to ensure safety. At the same time, emergency treatment of leakage and occupational disease prevention should be strengthened to ensure the health and life safety of operators.

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