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[Chemical Knowledge]：Specification for storage and transportation of m-xylene

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1. of safety storage and transportation specification
of m-xylene Introduction

m-xylene is an important chemical raw material, widely used in medicine, pesticides, dyes, plastics and other fields. However, due to its flammable, toxic and other characteristics, the safety requirements for storage and transportation are extremely high. In order to ensure the safety of storage and transportation of m-xylene, it is essential to have a set of strict specifications.

2. the physical and chemical properties of m-xylene

m-xylene is a colorless and transparent liquid with aromatic odor. Its molecular formula is C8H10, relative molecular mass is 106.17, melting point is -47.9 ℃, boiling point is 139.1 ℃, flash point is 25 ℃, spontaneous ignition point is 527 ℃, density is 0.866g/cm3. M-xylene is insoluble in water, but is miscible with organic solvents such as alcohols, ethers, and acetone.

3. the harmfulness of m-xylene

m-xylene is toxic to human body. Prolonged exposure or inhalation can cause central nervous system inhibition, dizziness, headache, nausea, vomiting and other symptoms. In severe cases, coma and convulsions may occur. In addition, m-xylene is also irritating and corrosive, and has an irritating effect on the eyes, skin and respiratory tract.

4. m-xylene storage specification

1. The storage place should choose a cool, ventilated and dry place, away from fire, heat and direct sunlight.
2. The storage container shall be a special storage tank with good sealing performance to avoid leakage.
3. The storage area shall be provided with obvious safety warning signs and equipped with corresponding fire fighting equipment.
4. Check and maintain the storage container regularly to ensure that it is intact.

5. m-xylene transportation specifications

1. Transport vehicles should have corresponding qualifications and certificates, and drivers should undergo professional training and obtain corresponding qualifications.
2. During transportation, ensure the stability of the vehicle, avoid bumps, collisions and other phenomena, and prevent damage to the container.
3. Transportation vehicles shall be equipped with corresponding fire fighting equipment and leakage emergency treatment equipment.
4. During transportation, high temperature, open flame and other dangerous factors should be avoided, and it is forbidden to mix with oxidants, acids and other items.
5. During transportation, traffic rules should be strictly observed, speed stability should be maintained, and illegal behaviors such as speeding and overloading should be avoided.

6. m-xylene leakage emergency treatment specification

1. If leakage is found, the operation should be stopped immediately, and the personnel in the leakage pollution area should be evacuated to the safety zone quickly, and the isolation should be carried out, and the access should be strictly restricted.
2. Cut off the fire source. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and fire protection clothing. Cut off leakage sources as much as possible to prevent entry into restricted spaces such as sewers and flood drainage ditches.
3. a small amount of leakage: with activated carbon or other inert material absorption. It can also be scrubbed with an emulsion made of a non-flammable dispersant, and the washing liquid is diluted and put into the waste water system.
4. A large number of leaks: build a dam or dig a pit to accommodate; cover 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.

7. summary

m-xylene as an important raw material for chemical production, its safe storage and transportation is very important. In order to ensure the safety during storage and transportation, the corresponding specifications and operating requirements must be strictly observed, and regular safety inspections and maintenance must be carried out to ensure the normal operation and safety of the equipment. At the same time, strengthen the safety training and education of employees, improve safety awareness, and ensure that effective emergency measures can be taken quickly in emergency situations to ensure the safety of personnel and the environment.

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